Sperm count. Medical search

A count of SPERM in the ejaculum, expressed as number per milliliter.

The thick, yellowish-white, viscid fluid secretion of male reproductive organs discharged upon ejaculation. In addition to reproductive organ secretions, it contains SPERMATOZOA and their nutrient plasma.

Movement characteristics of SPERMATOZOA in a fresh specimen. It is measured as the percentage of sperms that are moving, and as the percentage of sperms with productive flagellar motion such as rapid, linear, and forward progression.

The inability of the male to effect FERTILIZATION of an OVUM after a specified period of unprotected intercourse. Male sterility is permanent infertility.

The anterior portion of the spermatozoon (SPERMATOZOA) that contains mainly the nucleus with highly compact CHROMATIN material.

The quality of SEMEN, an indicator of male fertility, can be determined by semen volume, pH, sperm concentration (SPERM COUNT), total sperm number, sperm viability, sperm vigor (SPERM MOTILITY), normal sperm morphology, ACROSOME integrity, and the concentration of WHITE BLOOD CELLS.

A condition of suboptimal concentration of SPERMATOZOA in the ejaculated SEMEN to ensure successful FERTILIZATION of an OVUM. In humans, oligospermia is defined as a sperm count below 20 million per milliliter semen.

The process of germ cell development in the male from the primordial germ cells, through SPERMATOGONIA; SPERMATOCYTES; SPERMATIDS; to the mature haploid SPERMATOZOA.

Mature male germ cells derived from SPERMATIDS. As spermatids move toward the lumen of the SEMINIFEROUS TUBULES, they undergo extensive structural changes including the loss of cytoplasm, condensation of CHROMATIN into the SPERM HEAD, formation of the ACROSOME cap, the SPERM MIDPIECE and the SPERM TAIL that provides motility.

The male gonad containing two functional parts: the SEMINIFEROUS TUBULES for the production and transport of male germ cells (SPERMATOGENESIS) and the interstitial compartment containing LEYDIG CELLS that produce ANDROGENS.

The capacity to conceive or to induce conception. It may refer to either the male or female.

The structural and functional changes by which SPERMATOZOA become capable of oocyte FERTILIZATION. It normally requires exposing the sperm to the female genital tract for a period of time to bring about increased SPERM MOTILITY and the ACROSOME REACTION before fertilization in the FALLOPIAN TUBES can take place.

The convoluted cordlike structure attached to the posterior of the TESTIS. Epididymis consists of the head (caput), the body (corpus), and the tail (cauda). A network of ducts leaving the testis joins into a common epididymal tubule proper which provides the transport, storage, and maturation of SPERMATOZOA.

The emission of SEMEN to the exterior, resulting from the contraction of muscles surrounding the male internal urogenital ducts.

A condition of having no sperm present in the ejaculate (SEMEN).

A condition in which the percentage of progressively motile sperm is abnormally low. In men, it is defined as

A plant genus of the family BRASSICACEAE growing in Peru mountains. It is the source of maca root.

Interactive processes between the oocyte (OVUM) and the sperm (SPERMATOZOA) including sperm adhesion, ACROSOME REACTION, sperm penetration of the ZONA PELLUCIDA, and events leading to FERTILIZATION.

A potent androgenic steroid and major product secreted by the LEYDIG CELLS of the TESTIS. Its production is stimulated by LUTEINIZING HORMONE from the PITUITARY GLAND. In turn, testosterone exerts feedback control of the pituitary LH and FSH secretion. Depending on the tissues, testosterone can be further converted to DIHYDROTESTOSTERONE or ESTRADIOL.

The maturing process of SPERMATOZOA after leaving the testicular SEMINIFEROUS TUBULES. Maturation in SPERM MOTILITY and FERTILITY takes place in the EPIDIDYMIS as the sperm migrate from caput epididymis to cauda epididymis.

Human artificial insemination in which the husband's semen is used.

An assisted fertilization technique consisting of the microinjection of a single viable sperm into an extracted ovum. It is used principally to overcome low sperm count, low sperm motility, inability of sperm to penetrate the egg, or other conditions related to male infertility (INFERTILITY, MALE).

The fusion of a spermatozoon (SPERMATOZOA) with an OVUM thus resulting in the formation of a ZYGOTE.

Chemical substances or agents with contraceptive activity in males. Use for male contraceptive agents in general or for which there is no specific heading.

The male reproductive organs. They are divided into the external organs (PENIS; SCROTUM;and URETHRA) and the internal organs (TESTIS; EPIDIDYMIS; VAS DEFERENS; SEMINAL VESICLES; EJACULATORY DUCTS; PROSTATE; and BULBOURETHRAL GLANDS).

The process by which semen is kept viable outside of the organism from which it was derived (i.e., kept from decay by means of a chemical agent, cooling, or a fluid substitute that mimics the natural state within the organism).

Passive or active movement of SPERMATOZOA from the testicular SEMINIFEROUS TUBULES through the male reproductive tract as well as within the female reproductive tract.

The measurement of an organ in volume, mass, or heaviness.

The number of WHITE BLOOD CELLS per unit volume in venous BLOOD. A differential leukocyte count measures the relative numbers of the different types of white cells.

The convoluted tubules in the TESTIS where sperm are produced (SPERMATOGENESIS) and conveyed to the RETE TESTIS. Spermatogenic tubules are composed of developing germ cells and the supporting SERTOLI CELLS.

Artificial introduction of SEMEN or SPERMATOZOA into the VAGINA to facilitate FERTILIZATION.

A major gonadotropin secreted by the adenohypophysis (PITUITARY GLAND, ANTERIOR). Follicle-stimulating hormone stimulates GAMETOGENESIS and the supporting cells such as the ovarian GRANULOSA CELLS, the testicular SERTOLI CELLS, and LEYDIG CELLS. FSH consists of two noncovalently linked subunits, alpha and beta. Within a species, the alpha subunit is common in the three pituitary glycoprotein hormones (TSH, LH, and FSH), but the beta subunit is unique and confers its biological specificity.

A condition characterized by the dilated tortuous veins of the SPERMATIC CORD with a marked left-sided predominance. Adverse effect on male fertility occurs when varicocele leads to an increased scrotal (and testicular) temperature and reduced testicular volume.

Surgical removal of the ductus deferens, or a portion of it. It is done in association with prostatectomy, or to induce infertility. (Dorland, 28th ed)

The cap-like structure covering the anterior portion of SPERM HEAD. Acrosome, derived from LYSOSOMES, is a membrane-bound organelle that contains the required hydrolytic and proteolytic enzymes necessary for sperm penetration of the egg in FERTILIZATION.

The total process by which organisms produce offspring. (Stedman, 25th ed)

A computerized biomedical bibliographic storage and retrieval system operated by the NATIONAL LIBRARY OF MEDICINE. MEDLARS stands for Medical Literature Analysis and Retrieval System, which was first introduced in 1964 and evolved into an online system in 1971 called MEDLINE (MEDLARS Online). As other online databases were developed, MEDLARS became the name of the entire NLM information system while MEDLINE became the name of the premier database. MEDLARS was used to produce the former printed Cumulated Index Medicus, and the printed monthly Index Medicus, until that publication ceased in December 2004.

The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH.

Proteins found in SEMEN. Major seminal plasma proteins are secretory proteins from the male sex accessory glands, such as the SEMINAL VESICLES and the PROSTATE. They include the seminal vesicle-specific antigen, an ejaculate clotting protein; and the PROSTATE-SPECIFIC ANTIGEN, a protease and an esterase.

The middle piece of the spermatozoon is a highly organized segment consisting of MITOCHONDRIA, the outer dense fibers and the core microtubular structure.

The number of CD4-POSITIVE T-LYMPHOCYTES per unit volume of BLOOD. Determination requires the use of a fluorescence-activated flow cytometer.

The number of PLATELETS per unit volume in a sample of venous BLOOD.

Inability to reproduce after a specified period of unprotected intercourse. Reproductive sterility is permanent infertility.

A major gonadotropin secreted by the adenohypophysis (PITUITARY GLAND, ANTERIOR). Luteinizing hormone regulates steroid production by the interstitial cells of the TESTIS and the OVARY. The preovulatory LUTEINIZING HORMONE surge in females induces OVULATION, and subsequent LUTEINIZATION of the follicle. LUTEINIZING HORMONE consists of two noncovalently linked subunits, alpha and beta. Within a species, the alpha subunit is common in the three pituitary glycoprotein hormones (TSH, LH and FSH), but the beta subunit is unique and confers its biological specificity.

Refraining from SEXUAL INTERCOURSE.

Centers for acquiring and storing semen.

The ratio of the number of conceptions (CONCEPTION) including LIVE BIRTH; STILLBIRTH; and fetal losses, to the mean number of females of reproductive age in a population during a set time period.

Glycoproteins that inhibit pituitary FOLLICLE STIMULATING HORMONE secretion. Inhibins are secreted by the Sertoli cells of the testes, the granulosa cells of the ovarian follicles, the placenta, and other tissues. Inhibins and ACTIVINS are modulators of FOLLICLE STIMULATING HORMONE secretions; both groups belong to the TGF-beta superfamily, as the TRANSFORMING GROWTH FACTOR BETA. Inhibins consist of a disulfide-linked heterodimer with a unique alpha linked to either a beta A or a beta B subunit to form inhibin A or inhibin B, respectively

A saclike, glandular diverticulum on each ductus deferens in male vertebrates. It is united with the excretory duct and serves for temporary storage of semen. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

The human male sex chromosome, being the differential sex chromosome carried by half the male gametes and none of the female gametes in humans.

Exposure of the male parent, human or animal, to potentially harmful chemical, physical, or biological agents in the environment or to environmental factors that may include ionizing radiation, pathogenic organisms, or toxic chemicals that may affect offspring.

Pathological processes involving the male reproductive tract (GENITALIA, MALE).

A tough transparent membrane surrounding the OVUM. It is penetrated by the sperm during FERTILIZATION.

Substances or energies, for example heat or light, which when introduced into the air, water, or land threaten life or health of individuals or ECOSYSTEMS.

Achievement of full sexual capacity in animals and in humans.

Elements of limited time intervals, contributing to particular results or situations.

The number of CELLS of a specific kind, usually measured per unit volume or area of sample.

Condition resulting from deficient gonadal functions, such as GAMETOGENESIS and the production of GONADAL STEROID HORMONES. It is characterized by delay in GROWTH, germ cell maturation, and development of secondary sex characteristics. Hypogonadism can be due to a deficiency of GONADOTROPINS (hypogonadotropic hypogonadism) or due to primary gonadal failure (hypergonadotropic hypogonadism).

The number of offspring produced at one birth by a viviparous animal.

The number of LEUKOCYTES and ERYTHROCYTES per unit volume in a sample of venous BLOOD. A complete blood count (CBC) also includes measurement of the HEMOGLOBIN; HEMATOCRIT; and ERYTHROCYTE INDICES.

Supporting cells projecting inward from the basement membrane of SEMINIFEROUS TUBULES. They surround and nourish the developing male germ cells and secrete ANDROGEN-BINDING PROTEIN and hormones such as ANTI-MULLERIAN HORMONE. The tight junctions of Sertoli cells with the SPERMATOGONIA and SPERMATOCYTES provide a BLOOD-TESTIS BARRIER.

The epithelium lining the seminiferous tubules composed of primary male germ cells (SPERMATOGONIA) and supporting SERTOLI CELLS. As SPERMATOGENESIS proceeds, the developing germ cells migrate toward the lumen. The adluminal compartment, the inner two thirds of the tubules, contains SPERMATOCYTES and the more advanced germ cells.

Sexual activities of animals.

Preservation of cells, tissues, organs, or embryos by freezing. In histological preparations, cryopreservation or cryofixation is used to maintain the existing form, structure, and chemical composition of all the constituent elements of the specimens.

Tumors or cancer of the TESTIS. Germ cell tumors (GERMINOMA) of the testis constitute 95% of all testicular neoplasms.

A glycoprotein migrating as a beta-globulin. Its molecular weight, 52,000 or 95,000-115,000, indicates that it exists as a dimer. The protein binds testosterone, dihydrotestosterone, and estradiol in the plasma. Sex hormone-binding protein has the same amino acid sequence as ANDROGEN-BINDING PROTEIN. They differ by their sites of synthesis and post-translational oligosaccharide modifications.

The species Physeter catodon (also called Physeter macrocephalus), in the family Physeteridae. The common name is derived from the milky wax substance in its head (spermaceti). The species also produces an intestinal secretion AMBERGRIS, which was previously used in perfumes. The sperm whale is the largest toothed MAMMAL in the world.

A developmental defect in which a TESTIS or both TESTES failed to descend from high in the ABDOMEN to the bottom of the SCROTUM. Testicular descent is essential to normal SPERMATOGENESIS which requires temperature lower than the BODY TEMPERATURE. Cryptorchidism can be subclassified by the location of the maldescended testis.

The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms.

Male germ cells derived from the haploid secondary SPERMATOCYTES. Without further division, spermatids undergo structural changes and give rise to SPERMATOZOA.

A type of CELL NUCLEUS division, occurring during maturation of the GERM CELLS. Two successive cell nucleus divisions following a single chromosome duplication (S PHASE) result in daughter cells with half the number of CHROMOSOMES as the parent cells.

A mature haploid female germ cell extruded from the OVARY at OVULATION.

The degenerative fate of germ cells not conforming to stage in the pubertal golden hamster testis. (1/1363)

In the golden hamster (Mesocricetus auratus), pubertal establishment of spermatogenesis includes a defined period (d 26-30 of life) during which elongation of spermatids is selectively arrested. The resulting appearance of germ cell associations not conforming to stage and the phenomenon of desynchronisation-related germ cell degeneration are analysed both quantitatively and qualitatively by means of light and 'retrospective' electron microscopy. From d 26 onwards, the portion of tubules containing non-stage conforming germ cell associations gradually increases up to 37.5% of sectioned tubules on d 32. Concomitantly, the degree of desynchronisation rises to a maturational gap between spermatids and associated younger germ cells of 7 stages of the seminiferous epithelium cycle, i.e. of fully half a cycle. Beyond d 32, the frequency of desynchronised tubule segments decreases again. Some of the arrested round spermatids and, eventually, all belatedly elongating spermatids degenerate and are lost from the epithelium. Thus a regular maturation of advanced spermatids does not succeed under non-stage conforming conditions. Possibly it is not the desynchronisation between the associated germ cell generations and the spermatids by itself that impedes normal further development of the latter cells. Instead this may be due to the maturational delay of the stage-aberrant cells by several stages compared to the seminiferous epithelium as a whole and, especially, in relation to the stage-conditioned functional state of the neighbouring Sertoli cells. (+info)

Lack of effects of recombinant human GH on spermatogenesis in the adult cynomolgus monkey (Macaca fascicularis). (2/1363)

OBJECTIVE: The effects on male reproductive parameters after 1 year of treatment with recombinant human GH to the cynomolgus monkey were investigated. DESIGN: Twenty-four male cynomolgus monkeys were given daily subcutaneous doses of 0 (vehicle) (n=7), 0.4 (n=5), 2.0 (n=5) and 10.0 (n=7) IU/kg bodyweight for 52 weeks. At completion of the treatment period two control and two high-dose animals were left for a 12-week treatment-free period. METHODS: Before and during the treatment period and during the recovery period, sperm analyses, testicular volume measurements and hormone analyses of prolactin (PRL), LH, FSH, testosterone and IGF-I in serum, and analysis of serum antibodies against human GH were performed. Testicular morphology was monitored by biopsies, predose and on day 15 of the study, and with light microscopy on organ samples collected at time of death, at the end of the treatment, and during recovery periods respectively. RESULTS: Of all studied parameters, alterations were observed only in serum levels of IGF-I and PRL. IGF-I showed a dose-dependent increase throughout the treatment, with a normalisation during the treatment-free period. PRL decreased significantly in animals given 10.0IU/kg per day from week 14 of treatment and throughout the study but with a normalisation upon cessation of treatment. Spermatogenesis, as judged from semen analysis, testicular volume measurements and testicular morphology was not affected. CONCLUSION: This controlled preclinical study demonstrates that high doses of human GH do not alter male reproductive parameters in a non-human primate model. (+info)

Meiotic abnormalities and spermatogenic parameters in severe oligoasthenozoospermia. (3/1363)

The incidence of meiotic abnormalities and their relationship with different spermatogenic parameters was assessed in 103 male patients with presumably idiopathic severe oligoasthenozoospermia (motile sperm concentration < or = 1.5 x 10(6)/ml). Meiosis on testicular biopsies was independently evaluated by two observers. Meiotic patterns included normal meiosis and two meiotic abnormalities, i.e. severe arrest and synaptic anomalies. A normal pattern was found in 64 (62.1%), severe arrest in 21 (20.4%) and synaptic anomalies in 18 (17.5%). The overall rate of meiotic abnormalities was 37.9%. Most (66.7%) meiotic abnormalities occurred in patients with a sperm concentration < or = 1 x 10(6)/ml. In this group, total meiotic abnormalities were found in 57.8% of the patients; of these, 26.7% had synaptic anomalies. When the sperm concentration was < or = 0.5 x 10(6)/ml, synaptic anomalies were detected in 40% of the patients. In patients with increased follicle stimulating hormone (FSH) concentrations, total meiotic abnormalities occurred in 54.8% (synaptic anomalies in 22.6%). There were statistically significant differences among the three meiotic patterns in relation to sperm concentration (P < 0.001) and serum FSH concentration (P < 0.05). In the multivariate analysis, sperm concentration < or = 1 x 10(6)/ml and/or FSH concentration > 10 IU/l were the only predictors of meiotic abnormalities. (+info)

Screening methods for thyroid hormone disruptors. (4/1363)

The U.S. Congress has passed legislation requiring the EPA to implement screening tests for identifying endocrine-disrupting chemicals. A series of workshops was sponsored by the EPA, the Chemical Manufacturers Association, and the World Wildlife Fund; one workshop focused on screens for chemicals that alter thyroid hormone function and homeostasis. Participants at this meeting identified and examined methods to detect alterations in thyroid hormone synthesis, transport, and catabolism. In addition, some methods to detect chemicals that bind to the thyroid hormone receptors acting as either agonists or antagonists were also identified. Screening methods used in mammals as well as other vertebrate classes were examined. There was a general consensus that all known chemicals which interfere with thyroid hormone function and homeostasis act by either inhibiting synthesis, altering serum transport proteins, or by increasing catabolism of thyroid hormones. There are no direct data to support the assertion that certain environmental chemicals bind and activate the thyroid hormone receptors; further research is indicated. In light of this, screening methods should reflect known mechanisms of action. Most methods examined, albeit useful for mechanistic studies, were thought to be too specific and therefore would not be applicable for broad-based screening. Determination of serum thyroid hormone concentrations following chemical exposure in rodents was thought to be a reasonable initial screen. Concurrent histologic evaluation of the thyroid would strengthen this screen. Similar methods in teleosts may be useful as screens, but would require indicators of tissue production of thyroid hormones. The use of tadpole metamorphosis as a screen may also be useful; however, this method requires validation and standardization prior to use as a broad-based screen. (+info)

Inhibin B plasma concentrations in oligozoospermic subjects before and after therapy with follicle stimulating hormone. (5/1363)

The aim of this study was to investigate inhibin B and follicle stimulating hormone (FSH) secretion in a large group of oligozoospermic subjects affected by different degrees of testicular damage, before and after FSH treatment. A total of 135 oligozoospermic subjects (sperm count < 20 x 10(6)/ml) were evaluated for seminal parameters and FSH, luteinizing hormone (LH), testosterone and inhibin B plasma concentrations. Testicular structure was analysed with bilateral fine needle aspiration cytology. Inhibin B showed an inverse correlation with FSH, no correlation with sperm concentration and a significant relationship with intratesticular spermatid number, demonstrating that testicular spermatids play an important role in the control of inhibin B production. Twenty-five subjects with sperm counts < 10 x 10(6)/ml were treated with FSH; 11 of these had basal FSH and inhibin B plasma concentrations in the normal range (group A), while in seven subjects FSH was elevated (> 7 IU/l) with normal inhibin B (group B), and in seven patients FSH was high and inhibin B reduced (< 80 pg/ml) (group C). During treatment, in group A patients inhibin B plasma concentrations increased significantly after 2, 3 and 4 weeks of FSH administration and declined thereafter to pre-treatment concentrations. Groups B and C did not show any modification during the treatment. In the same period, in group A FSH increased significantly after 2, 3 and 4 weeks and subsequently declined. In groups B and C, FSH increased significantly after 2 weeks and remained elevated during the following period. The results of the present study confirm the significant inverse correlation between inhibin B and FSH plasma concentrations in subjects with disturbed spermatogenesis, and demonstrate that inhibin B reflects Sertoli cell function and their interaction with spermatids. FSH and inhibin B concentrations are an expression of the spermatogenic status of seminiferous tubules. FSH treatment seems to modify inhibin B plasma concentrations only in subjects with normal basal FSH and inhibin B, independently from the effects of this therapy on sperm production. (+info)

Evolution of semen quality in North-eastern Spain: a study in 22,759 infertile men over a 36 year period. (6/1363)

A retrospective study was conducted in a large population to determine whether sperm quality has changed in Northeastern Spain between 1960 and 1996. From a total initial population of 22,759 men, two separate groups were studied: men with spermatozoa (n = 20,411) and those with azoospermia (n = 1364). After adjustment for age and sexual abstinence, multiple linear regression analyses were used to assess changes in semen parameters over time. A 0.2% decline was observed in semen volume in the spermatozoa group (P < 0.001). No significant increase (0.04%) in sperm count (x 10(6)/ml) was observed in the spermatozoa group. There was a 0.4% increase in motile spermatozoa in the spermatozoa group (P < 0.001). There was a statistically significant decline in normal spermatozoa (3.6%) in the spermatozoa group (P < 0.001). Of the total population, 1364 men had azoospermia (6.0%). The changes observed in the semen parameters analysed in this large population showed no evidence of a deteriorating sperm quality, although a statistically significant decline was observed in the percentage of normal spermatozoa. (+info)

Relationship between psychological stress and semen quality among in-vitro fertilization patients. (7/1363)

The purpose of this study was to determine the relationship between psychological stress and semen quality among men undergoing in-vitro fertilization (IVF). We assessed psychological variables, including self-reported stress, and sperm parameters in a group of 40 men undergoing IVF for the first time at a pre-IVF sampling period (T1) and at the time of egg retrieval (T2). Thirty-one patients completed the study. Results indicated that total and motile sperm concentration, total motile spermatozoa, and lateral head displacement decreased significantly from T1 to T2 in a high percentage of participants. In addition, the perceived importance of producing a semen specimen increased significantly (P = 0.001) from T1 to T2, and this change was significantly correlated (P < 0.05) with diminished semen quality at the time of oocyte retrieval. No decline in the semen quality or increase in perceived stress at egg retrieval was observed at T2 in male factor patients (n = 7). This study provides evidence for a significant decline in semen quality of male IVF patients at egg retrieval and demonstrates an inverse relationship between semen quality and specific aspects of psychological stress. (+info)

Comparative evaluation of two density gradient preparations for sperm separation for medically assisted conception. (8/1363)

To evaluate and optimize the sperm separation efficiency of a novel silane-coated silica bead (Puresperm), serial studies were carried out to compare the various sperm parameters between: (i) three-layer (90%-70%-40%) Puresperm and three-layer (90%-70%-40%) conventional polyvinylpyrrolidone (PVP)-coated silica bead (Percoll) gradients; (ii) three-layer (90%-70%-40%) and two-layer (90%-45%) Puresperm gradients and separately the same for Percoll; and (iii) large (3.0 ml) and small (0.75 ml) semen loading volumes on three-layer Puresperm gradients. Normozoospermic semen samples were treated and analysed in 12 replicates for each experiment. Manual evaluation of concentration, percentage motility, percentage vitality, percentage normal morphology; computer-assisted semen analysis evaluation of concentration, percentage motility, grade of motility, motion characteristics (curvilinear velocity, linearity, amplitude of lateral head velocity, beat cross frequency, percentage hyperactivation); and yields from the initial semen samples were compared. Percoll was found to be superior to Puresperm in concentration, percentage motility, percentage vitality and yields after three-layer density gradient centrifugation. There were no significant differences in sperm parameters between two- and three-layer Percoll gradients, but three-layer Puresperm gradients behaved significantly better than two-layer gradients. Large semen volume loads on three-layer Puresperm gradients resulted in greater sperm concentrations, percentage motility, percentage vitality and percentage normal morphology, but small semen volume loads produced greater yields of good-quality spermatozoa. In the light of Percoll being withdrawn from the shelf for the use of assisted reproduction because of the presence of PVP, three-layer Puresperm gradients with large semen loading volumes appear to be an attractive alternative for sperm separation in medically assisted conception. (+info)

Sperm Count. Playwrights Guild of Canada, 2002. ISBN 978-155290-1533. Griffiths, Linda. Spiral Woman and the Dirty Theatre. ... Soul Mate by David Belke The Soul Menders by Patti Flather Interfaceby Greg Nelson Speculum by Betty Jane Wylie Sperm Count by ...

https://en.wikipedia.org/wiki/List_of_Canadian_plays_(P–Z)

"Low sperm count". NHS Choices. 2 August 2016. Baazeem, Abdulaziz; Belzile, Eric; Ciampi, Antonio; Dohle, Gert; Jarvi, Keith; ... and some have sperm with abnormal shapes or that do not move well. Theories as to how varicocele affects sperm function include ... Some men with the condition are fertile, some have sperm that are normal in shape and move normally but are compromised in ... There is tentative evidence that varicocelectomy may improve fertility in those with obvious findings and abnormal sperm; ...

https://en.wikipedia.org/wiki/Varicocele

If sperm count remains above 60 million per ejaculate, fertility remains normal. But sperm counts are continuing to drop. At ... Over the past half century, there has been an increase in scientific data supporting the decline in male sperm count. The ... Martin R (May 21, 2013). "Sperm Count Updated". Psychology Today. Sussex Publishers, LLC. Retrieved March 3, 2016. Coale AJ, ... Waiting time to conception, or the time it takes for the woman to become pregnant, including the time for sperm to travel to ...

https://en.wikipedia.org/wiki/Natural_fertility

"What Happens If We Hit Sperm Count Zero?". GQ. Retrieved 15 November 2018. Belluz J (17 September 2018). "Sperm counts are ... Salam M (20 January 2018). "Sperm Count in Western Men Has Dropped Over 50 Percent Since 1973, Paper Finds". The New York Times ... the quantity of damaged DNA in sperm, decreased sperm motility, decreased semen volume, and other metrics. Phthalates causing ...

https://en.wikipedia.org/wiki/Phthalate

... and how modern lifestyle choices may affect sperm function. She is working on developing drugs to enhance sperm count and ... "Sperm Counts Have Dropped 50 Percent. Can She Find a Fix?". OZY. 29 August 2018. Retrieved 26 June 2020. "Alumna named on the ... In addition to her work in sperm count and function, Da Silva is a consultant gynecologist in the area of freezing eggs. In ... She delivered a speech highlighting the problem of decreasing sperm counts at the BBC 100 Women event in Delhi, India. Da Silva ...

https://en.wikipedia.org/wiki/Sarah_Martins_Da_Silva

... : Increasing Sperm Count". WebMD. Archived from the original on 2012-08-20. "Are Boxer Shorts Really Better? a Critical ... have been blamed for negatively affecting sperm production, since they may interfere with cooling of the testes. However, not ...

https://en.wikipedia.org/wiki/Briefs

Corcoran, Terence (June 13, 2011). "Junk Science Week: Lipstick, apples & sperm counts". Financial Post. Archived from the ...

https://en.wikipedia.org/wiki/Environmental_Working_Group

"Investigating the Middle School Rumor that Mountain Dew Lowers Your Sperm Count". Vice. "Re: DOES YELLOW 5 LOWER SPERM COUNT". ... and sperm count. There are no documented cases supporting the claim tartrazine will shrink a penis or cause it to stop growing ...

https://en.wikipedia.org/wiki/Tartrazine

The Try Guys Test Their Sperm Count. BuzzFeedVideo. Retrieved January 13, 2019 - via YouTube. Which Type Of Alcohol F*cks You ...

https://en.wikipedia.org/wiki/List_of_The_Try_Guys_episodes

"Estrogen Linked To Sperm Count, Male Fertility". Science Blog. Archived from the original on 7 May 2007. Retrieved 4 March 2008 ... In males, estrogen regulates certain functions of the reproductive system important to the maturation of sperm and may be ...

https://en.wikipedia.org/wiki/Estrogen

... it has been found that heavy use of marijuana decreases the sperm count of healthy men. This reduction in sperm count can be ...

https://en.wikipedia.org/wiki/Cannabis_and_sex

A 2012 review concluded that "together, the results of these studies have shown that RF-EMR decreases sperm count and motility ... Scutti, Susan (25 July 2017). "Sperm counts of Western men plummeting, analysis finds". CNN. Sengupta, Pallav; Dutta, Sulagna; ... A decline in male sperm quality has been observed over several decades. Studies on the impact of mobile radiation on male ... "The effects of radiofrequency electromagnetic radiation on sperm function". Reproduction. 152 (6): R263-R276. doi:10.1530/REP- ...

https://en.wikipedia.org/wiki/Wireless_device_radiation_and_health

... decreased sperm count, reproductive problems, early puberty, obesity, and neurological problems. Early developmental stages ... "Prenatal testosterone excess reduces sperm count and motility". Endocrinology. 149 (12): 6444-8. doi:10.1210/en.2008-0785. PMID ... so if by chance there is sperm in the ovaries later on through the testing it can then be pinned to the chemical without the ... but of greatest concern are effects on the development of the male reproductive system and production of normal sperm in young ...

https://en.wikipedia.org/wiki/Endocrine_disruptor

Mayer, Heather (6 March 2007). "Fact or Myth: Mountain Dew lowers sperm count". The Daily Orange (Syracuse, New York). Archived ... lowers sperm count. Tartrazine has never been scientifically linked to any of the alleged effects in the legends, nor has any ...

https://en.wikipedia.org/wiki/Mountain_Dew

Several studies in Sweden shown that obese men tend to have a lower sperm count, fewer rapidly mobile sperm and fewer ... "Obesity linked to lower sperm count in young men". Reuters. 11 August 2010. Retrieved 25 September 2010. "Sweden to prescribe ... progressively motile sperm compared to normal-weight men. School nurses in Uppsala, Uppsala County, will be prescribing ...

https://en.wikipedia.org/wiki/Obesity_in_Sweden

"Science Blog - Estrogen Linked To Sperm Count, Male Fertility". Science Blog. Archived from the original on 7 May 2007. ... Pregnancy generally requires internal fertilization of the eggs with sperm, via either sexual intercourse or artificial ... sperm), form new genetic individuals. The uterus is an organ with tissue to protect and nurture the developing fetus and muscle ...

https://en.wikipedia.org/wiki/Woman

Brockovich, Erin (18 March 2021). "Plummeting sperm counts, shrinking penises: toxic chemicals threaten humanity". The Guardian ...

https://en.wikipedia.org/wiki/Erin_Brockovich

Washed sperm is required in certain situations. Pre- and post-concentration of motile sperm is counted. Sperm from a sperm bank ... The pregnancy rate also depends on the total sperm count, or, more specifically, the total motile sperm count (TMSC), used in a ... partner sperm) or by a known or anonymous sperm donor (see sperm donation (donor sperm)). The beneficiaries of artificial ... Sperm from a sperm bank will also be suspended in a semen extender which assists with freezing, storing and shipping. If sperm ...

https://en.wikipedia.org/wiki/Artificial_insemination

Mike conceals that he has a low sperm count. Jo is killed by a bus while crossing a street. As she dies in his arms, Mike ...

https://en.wikipedia.org/wiki/Bag_of_Bones_(miniseries)

Several studies have shown that obese men tend to have a lower sperm count, fewer rapidly mobile sperm and fewer progressively ... "Obesity linked to lower sperm count in young men". Reuters. 11 August 2010. Retrieved 25 September 2010. "World's Fattest ... motile sperm compared to normal-weight men. Source:Forbes.com The following list reflects the percentage of overweight adults ...

https://en.wikipedia.org/wiki/Obesity_in_Austria

Several studies have shown that obese men tend to have a lower sperm count, fewer rapidly mobile sperm and fewer progressively ... "Obesity linked to lower sperm count in young men". Reuters. August 11, 2010. Retrieved September 25, 2010. "Doppelt so viele ... motile sperm compared to normal-weight men. Obesity in Germany has created a cholesterol problem. High cholesterol is known to ...

https://en.wikipedia.org/wiki/Obesity_in_Germany

He is believed to have a low sperm count. This is a list of some notable orcas that died in captivity. It doesn't include every ... and the older male Ulises seems to have a low sperm count. Sumar was approaching full size for a typical bull orca when he died ...

https://en.wikipedia.org/wiki/List_of_captive_orcas

In 2007, she published Sperm Counts: Overcome by Man's Most Precious Fluid (NYU Press) a qualitative research project which ... Sperm Counts: Overcome by Man's Most Precious Fluid. (New York: New York University Press). http://nyupress.org/books/book- ... Purchase College Biopolitics Book Series NYU Press Lisa Jean Moore on Academia.edu Lisa Jean Moore on Amazon.com The Sperm Bank ... From 1993 - 1998, Moore was the board president for The Sperm Bank of California in Berkeley California. She was also on the ...

https://en.wikipedia.org/wiki/Lisa_Jean_Moore

"Science Blog - Estrogen Linked To Sperm Count, Male Fertility". Science Blog. Archived from the original on 7 May 2007. ...

https://en.wikipedia.org/wiki/Female_body_shape

Several studies have shown that obese men tend to have a lower sperm count, fewer rapidly mobile sperm and fewer progressively ... "Obesity linked to lower sperm count in young men". Reuters. August 11, 2010. Retrieved September 25, 2010. "New park opens as ... motile sperm compared to normal-weight men. Scientists from the University of Verona designed a new type of park to help deal ...

https://en.wikipedia.org/wiki/Obesity_in_Italy

... reproductive effects including reduction in sperm count and ovarian failure. When combined with ethanol, procarbazine may cause ... Common side effect include low blood cell counts and vomiting. Other side effects include tiredness and depression. It is not ...

https://en.wikipedia.org/wiki/Procarbazine

It was discovered Ethan suffered an extremely low sperm count. They turned to fertility treatments, using a sperm donor along ... A different sperm donor was used when the couple decided to conceive a younger sibling for Eliot. Casey underwent IUI for the ...

https://en.wikipedia.org/wiki/Quints_by_Surprise

Collecting the sperm at home gives a higher sperm concentration, sperm count and motility, particularly if the sperm is ... sperm count and sperm motility. Men who scored high on a battery of intelligence tests tended to have higher counts of healthy ... seafood and pastries increased sperm count by 50%. Men who consume such diet have sperm counts nearly twice as high as men who ... The practise of tucking can reduce both the sperm count and sperm quality. Meta-analysis indicates that mobile phone exposure ...

https://en.wikipedia.org/wiki/Semen_quality

It is linked to both semen volume and sperm count. A lower than median AGD also increases the likelihood of undescended testes ... and lowered sperm counts and testicular tumors in adulthood. Babies with high total exposure to phthalates were ninety times ...

https://en.wikipedia.org/wiki/Anogenital_distance

The sperm count of the patient was normal (25 million/mL; normal, >20 million/mL), but his sperm viability was low (18%; normal ... There are deficits in sperm motility, an increased incidence of sperm defects (specifically, sperm heads separated from the ... the latter rendering produced sperm ineffective. Sperm counts are significantly reduced, at 55% of those of normal mice, and ... Males can produce viable sperm, but there are severe deficits in both spermatogenesis and sperm function, ...

https://en.wikipedia.org/wiki/Estrogen_insensitivity_syndrome

In Batman: The Animated Series, the group is named Society of Shadows and first appears under the control of Count Vertigo. It ... Ra's al Ghul had ordered the hunt of whales, creating genetically altered super-humans in the wombs of sperm whales. This being ... Vertigo - In Batman the Animated Series, Count Vertigo (only known as Vertigo) worked for Ra's al Ghul. Verdigris - He escapes ...

https://en.wikipedia.org/wiki/League_of_Assassins

She grew up in a sophisticated and intellectual household, and her parents counted Sigmund Freud among their friends. Having ... 6 Exile Studies, (Peter Lang 1997) ISBN 978-0-8204-3743-9 Wiesner, Berthold (8 April 2012). "Sperm dono may have fathered 1000 ...

https://en.wikipedia.org/wiki/Anna_Gmeyner

... sperm used for polo horses) Pollen Count (16th) - Exported to Zimbabwe 1992 Derby Days. Tempus. 2004. p. 137. ISBN 0-7524-3202- ... "Pollen Count". sporthorse-data.com. Sporthorse Data. Retrieved 23 April 2020. Colour Chart - Derby 1992 (EngvarB from October ... 1st Lingfield Derby Trial Pollen Count - 1st Sandown Classic Trial Ninja Dancer - 8th Feilden Stakes, 5th Predominate Stakes ...

https://en.wikipedia.org/wiki/1992_Epsom_Derby

Adults have a genital opening and either chelicerae modified for sperm transfer (if male) or a sperm-receiving structure (if ... Taxonomy to families (Beaulieu 2011). Genus and species counts fluctuate over time. Order Mesostigmata G. Canestrini, 1891 ...

https://en.wikipedia.org/wiki/Mesostigmata

In men with no sperm count (azoospermia), it soon became clear that sperm could be found in the testes and used with ICSI, but ... The tails of normal sperm will swell when exposed to this solution, whereas damaged sperm with low motility will not swell ... Birth after intracytoplasmic sperm injection using testicular sperm from men with Kartagener/immotile cilia syndrome. Fertil ... Turek PJ, Givens C, Schriock ED, Meng M, Pederson RA and Conaghan J. Testis sperm extraction and intracytoplasmic sperm ...

https://en.wikipedia.org/wiki/Paul_J._Turek

A well-traveled and well-read person who counted among her friends Leo Tolstoy and Havelock Ellis, she also visited Sweden and ... Stockham's interest in birth control could not overcome her fear that a mechanical sperm barrier would prevent "the complete ...

https://en.wikipedia.org/wiki/Alice_Bunker_Stockham

The most endangered species is the Cross River gorilla, a great ape, whose last reported count was 300, spread over 11 ... sperm whale, fin whale, sei whale, killer whale, and dolphins are reported on the coast of the Atlantic Ocean. The African ...

https://en.wikipedia.org/wiki/Wildlife_of_Cameroon

Transvaginal ultrasound can also be used to "count the number of follicles" and this procedure is called Antral Follicle Count ... Estimating the "fertility of a woman" is quite difficult because of the male factor (quality of sperm). This French study ...

https://en.wikipedia.org/wiki/Age_and_female_fertility

... of which 1500 are counted throughout the temple, and apsaras (or celestial dancers), counting about 2000. The nude also has a ... which together with a line of sperm suggest the artist's rejection of the traditional attitude of men towards women. In Puberty ... being able to count in all his production more than a hundred nudes. This can be seen in works such as The Martyrdom of St. ... counting on countless models from Parisian high society, where he was very fashionable in the interwar period. His works ...

https://en.wikipedia.org/wiki/History_of_the_nude_in_art

FISH on sperm cells is indicated for men with an abnormal somatic or meiotic karyotype as well as those with oligozoospermia, ... Probes that hybridize along an entire chromosome are used to count the number of a certain chromosome, show translocations, or ... FISH, on the other hand, does not require living cells and can be quantified automatically, a computer counts the fluorescent ... Special locus-specific probe mixtures are often used to count chromosomes, by binding to the centromeric regions of chromosomes ...

https://en.wikipedia.org/wiki/Fluorescence_in_situ_hybridization

eDNA can come from skin, mucous, saliva, sperm, secretions, eggs, feces, urine, blood, roots, leaves, fruit, pollen, and ... Siccha, Michael; Kucera, Michal (2017). "ForCenS, a curated database of planktonic foraminifera census counts in marine surface ...

https://en.wikipedia.org/wiki/Environmental_DNA

Yet biology tell us gender is determined by the father's sperm. Social attitudes will not change as long as women believe them ... By virtue of women performing these roles which are statistically not counted as economic and hence not monetarily valued, ...

https://en.wikipedia.org/wiki/Women_in_Nepal

The testes are organs inside the scrotum that create sperm as well as sex hormones and testosterone. The sperm in the testes ... Lab tests such as a complete blood count (CBC test) or urine test can also be conducted to check for any possible infection or ... However, if the epididymis becomes injured, then there is a chance that the sperm will not mature and a man will not be able to ... Sperm accumulation gradually causes the diverticulum to increase in size, causing a spermatocele. While there are many tubules ...

https://en.wikipedia.org/wiki/Spermatocele

... a goal made difficult because of Evan's low sperm count and motility, culminating in Season 8 in an in vitro fertilisation that ...

https://en.wikipedia.org/wiki/List_of_Royal_Pains_characters

... possibly leading to a decline in the sex ratio in humans and a possible decline in sperm counts. Out of over 100,000 recently ... were not counted as a live birth until they had survived for seven days; if that infant died in those first 168 hours it, would ... there are equal numbers of X and Y chromosomes in mammalian sperm X and Y stand equal chance of achieving conception therefore ... not be counted as an infant death. This led to serious underreporting of the infant mortality rate (by 22% to 25%) relative to ...

https://en.wikipedia.org/wiki/Human_sex_ratio

The father, by sperm donation, was David Crosby, the star of Crosby, Stills, Gnash [sic] and Young. He's with us in Cleveland. ... Crosby, David; David Bender (2000). Stand and Be Counted: A Revealing History of Our Times Through the Eyes of the Artists Who ... In January 2000, Melissa Etheridge announced that Crosby was the sperm donor of two children with her partner Julie Cypher by ...

https://en.wikipedia.org/wiki/David_Crosby

... has shown to decrease male fertility resulting in a decrease in sperm parameters such as sperm density, total sperm count, and ... In the developed world, the temporal trend for the reduction in sperm parameters (sperm count, motility, morphology, volume, ... The damage that heat can pose on sperm production are associated with a reduction in sperm motility, an increase in sperm DNA ... which has been proposed to lead to low sperm count. Obese men have lower circulating testosterone which affects sperm ...

https://en.wikipedia.org/wiki/Obesity_and_fertility

In 2010 then head of stock-broking firm Lonsec, Norman John Graham, was served a notice by ASIC alleging 14 counts of insider ... In March 2007, the company announced it has successfully stimulated the release of sperm in a captive Southern bluefin tuna and ... Wood, Leonie (2012-06-07). "Former chief broker on insider counts". The Sydney Morning Herald. Retrieved 2021-05-03. "Bluefin ...

https://en.wikipedia.org/wiki/Clean_Seas_Seafood

This is reflected in humans, as the sperm count in ejaculations is decreased if copulation occurs more than three to five times ... Larger testes have also been shown to predict higher sperm quality, including a larger number of motile sperm and higher sperm ... Sperm competition has caused the human penis to evolve in length and size for sperm retention and displacement. To achieve this ... Sperm are produced in the testes and stored in the attached epididymis. During ejaculation, sperm are propelled up the vas ...

https://en.wikipedia.org/wiki/Human_penis

They use palpal inflations to determine sperm count and if the female deems sperm count too low she will consume the male. In ... this suggests that the pheromone produced is potentially related to sperm production, since the male inserts sperm from his ... Males of many of these species cannot replenish sperm stores, therefore they must exhibit these extreme behaviors in order to ... In many species, cannibalized males can mate longer, thus having longer sperm transfers. Males in these mating systems are ...

https://en.wikipedia.org/wiki/Sexual_cannibalism

Like most living frogs, female temnospondyls would have laid masses of eggs in water while males released sperm to fertilize ... The majority of temnospondyls have presacral counts between 23 and 27, with reduction observed in some amphibamiforms and ...

https://en.wikipedia.org/wiki/Temnospondyli

Swan SH, Colino S (February 2021). Count down: how our modern world is threatening sperm counts, altering male and female ...

https://en.wikipedia.org/wiki/Per-_and_polyfluoroalkyl_substances

He did not experience an orgasm, though Barney thought that a sperm sample had been taken. The men scraped his skin and peered ... Other research revealed that some stars counted by Fish as likely to host life would have had to be excluded by her own ... Someone felt his spine and seemed to be counting his vertebrae. While Betty reported a conversation with the "leader" in ...

https://en.wikipedia.org/wiki/Barney_and_Betty_Hill

... declining birth rates and sperm counts, and autism. Obesogens are described as natural and artificial endocrine-disrupting ...

https://en.wikipedia.org/wiki/The_New_American_Diet

Sperm cells also express odor receptors, which are thought to be involved in chemotaxis to find the egg cell. Rather than ... even though the functional OR count is vastly different between these two species. Such birth-and-death evolution has brought ... species with higher pseudogene count would also have a decreased olfactory ability. This assumption is flawed. Dogs, which are ... "Odorant receptors and olfactory-like signaling mechanisms in mammalian sperm". Molecular and Cellular Endocrinology. 250 (1-2 ...

https://en.wikipedia.org/wiki/Olfactory_receptor

In sperm, about half the sperm have an X chromosome and half have a Y chromosome. If an egg fuses with sperm with a Y ... They also have larger hearts, 10% higher red blood cell count, and higher haemoglobin hence greater oxygen-carrying capacity. ... Sperm also have only one set of 23 chromosomes and are therefore haploid. When an egg and sperm fuse at fertilization, the two ... If an egg fuses with sperm with an X chromosome, the resulting individual is female. There are rare exceptions to this rule in ...

https://en.wikipedia.org/wiki/Sex_differences_in_human_physiology

"Oral enclomiphene citrate stimulates the endogenous production of testosterone and sperm counts in men with low testosterone: ... In men with secondary hypogonadotropic hypogonadism, this improves testosterone levels and sperm motility. Men with secondary ... and thus to produce both testosterone and sperm in the testes, this drug may prove itself superior to other treatments." ...

https://en.wikipedia.org/wiki/Enclomifene

Cecil Jacobson, relentlessly generous sperm donor, and prolific patriarch of sperm banking, for devising a simple, single- ... "Baptists count the lost. 46% of Alabamians face damnation, report says". Birmingham News. 5 September 1993. p. 1. Dart, R.; ... Umpierre, S. A; Hill, J. A; Anderson, D. J (1985). "Effect of Coke on Sperm Motility". New England Journal of Medicine. 313 (21 ... Mikkelson, Barbara (16 March 2007). "Killer Sperm: Coca-Cola Spermicide". Snopes. Retrieved 3 October 2008. Nakagaki, T.; ...

https://en.wikipedia.org/wiki/List_of_Ig_Nobel_Prize_winners

Trillian, wishing to have a child, finds some of his sperm in a DNA bank (which was very easy, since he was the only donor of ... not counting The Guide itself) to speak in Fit the First of the radio series. Appears in: the novel The Hitchhiker's Guide to ... A sperm whale called into existence by the Heart of Gold's improbability drive, above the planet Magrathea alongside Agrajag ( ... Agrajag makes a brief appearance in his bowl of petunias form in the 2005 film, the moment he and the sperm whale were called ...

https://en.wikipedia.org/wiki/List_of_The_Hitchhiker's_Guide_to_the_Galaxy_characters

A meta-analysis of sperm count in men on six continents shows an alarming decline that continues to accelerate. ... The declines in mens sperm concentration and total sperm counts at over 1% each year are consistent with adverse trends in ... Overall, there is a significant worldwide decline in sperm counts of more than 50% in the past 46 years, a decline that has ... A meta-analysis of sperm count in men on six continents shows an alarming decline that continues to accelerate, according to an ...

https://www.medscape.com/viewarticle/987642

There are a number of environmental and physical reasons why a mans sperm count may drop, resulting in a low sperm count. ... In many parts of the world, scientists and fertility doctors are noticing a drop in sperm count and sperm motility (sperm ... And a study in France found that obese men were 42 percent more likely to have low sperm counts than non-obese men, and an 80 ... Plastics: Bisphenol A (BPA), an additive to plastics found in many household products, can lower sperm counts and motility. A ...

https://www.livescience.com/34409-low-sperm-count.html

A newly developed chip may change that, and provide a fast, at-home method for anyone to test their sperm count. ... and lengthy waits while lab technicians painstakingly count out individual sperm. ... rather than relying on a human to count each sperm one at a time. And instead of giving an exact sperm count, the chip simply ... New Chip Provides Cheap At-Home Sperm Counting. As if having trouble conceiving a child wasnt painful enough, the current ...

https://www.popsci.com/technology/article/2010-01/counting-chip-provides-cheap-home-sperm-counting/

Having a low sperm count can make conceiving a child difficult, but not necessarily impossible. Learn about possible causes and ... Sperm testing issues. Lower than normal sperm counts can result from testing a sperm sample that was taken too soon after your ... A number of risk factors are linked to low sperm count and other problems that can cause low sperm count. They include:. * ... However, often the cause of low sperm count isnt identified.. Medical causes. Low sperm count can be caused by a number of ...

https://www.mayoclinic.org/diseases-conditions/low-sperm-count/symptoms-causes/syc-20374585

Всемирная организация здравоохранения; НИИ репродукции человека им. И.Ф.Жорданиа МЗ ГССР; Сотрудничающий Центр ВОЗ по репродукции человека в г.Тбилиси. (‎Всемирная организация здравоохранения, 1988)‎ ...

https://extranet.who.int/iris/restricted/browse?authority=Sperm+Count&type=mesh

Epidemiologist Shanna Swan says low counts and changes to sexual development could endanger human species ... Falling sperm counts and changes to sexual development are "threatening human survival" and leading to a fertility crisis, a ... It comes after a study she co-authored in 2017 found that sperm counts in the west had plummeted by 59% between 1973 and 2011, ... In the book, Swan and co-author Stacey Colino explore how modern life is threatening sperm counts, changing male and female ...

https://www.theguardian.com/us-news/2021/feb/26/falling-sperm-counts-human-survival?fbclid=IwAR1n-_nCGdU6VZFtNkRJfNm6SVKJ0-ADJQ_DhqfXTzLUDleSBBE9jfcPI8I

Men who eat a large amount of junk food before the age of 20 could be causing an irreversible low sperm count, according to a ... Junk Food Is Linked to Irreversible Low Sperm Count. That Cheeseburger and Those Chips Are Killing Your Sperm. ... Its never too late to take steps to improve your sperm count - and your overall health - by ditching the chips once in a while ... "You would be surprised to see how sensitive young men are to things that might affect sperm count, because its a perceived ...

https://www.askmen.com/news/health/junk-food-is-linked-to-irreversible-low-sperm-count.html

Could all those hours logged on your exercise bike be responsible for a low sperm count and difficulties getting pregnant? Dr. ... Those who cycled at least five hours a week were more likely to have a low sperm count and fewer motile sperm than men who did ... Men who spend a lot of time on a bicycle seat have been shown in some studies to have lower sperm counts, but those studies ... If you and your partner are having trouble conceiving, one of the first things your doctor will look at is sperm count. And ...

https://www.orlandohealth.com/content-hub/does-cycling-lower-your-sperm-count

Research has shown that sperm count is declining. Experts discuss what that means and what couples thinking about trying for a ... Bishop says a sperm count over 15 million is typical. If a person has a sperm count between 7 to 15 million, a couple has a ... Is Sperm Count Decreasing? Heres What Would-Be Parents Should Know. Research has shown that sperm count is declining. Experts ... But having low sperm count can make a successful pregnancy difficult. Experts say talking about sperm count and its impact on ...

https://www.parents.com/getting-pregnant/infertility/causes/is-sperm-count-decreasing-heres-what-would-be-parents-should-know/

... These Pizza Toppings Will Increase Your Sperm Count, ... Spinach - The leafy greens are packed with folate, which counteracts damaged sperm and increases overall count. ... Elevate your sperm to the upper crust with these toppings. * Garlic - The staple ingredient contains allicin, which improves ... This is due to the holy nutrient and cure-all lycopene, an antioxidant that prevents sperm damage. It also serves up the added ...

https://www.menshealth.com/uk/nutrition/food-drink/a31219027/pizza-toppings-will-increase-your-sperm-count/

Smoking and sperm count - An expert weighs in on how cigarette smoking can affect male fertility. Get information on fertility ... Among the long list of smokings evils is the effect that tobacco smoke can have on reducing both sperm count (quantity) and ... Mens Sperm Count Has Dropped More Than 60 Percent Over Past 45 Years ... But if his sperm is only borderline quality, it can make a difference in helping you conceive. Either way, since there are a ...

https://www.thebump.com/a/smoking-sperm-count

You can have improvement in your sperm count with the help of yoga ... with low sperm count (10) and low motility. Can you please suggest me yoga poses to improve sperm count and motility?. Having a ... What Yoga To Do For Improvement In Sperm Count?. *How Can I Improve My Sperm Count Through Yoga? ...

http://www.yogawiz.com/askquestion/79/yoga-help-for-infertility-hi-i-am-31-years-male-an.html

They soon learned that the men who had both the highest sperm count and the healthiest sperm followed the Prudent diet, while ... The Vegetarian diet produced the second best sperm count and quality, followed by the Smørrebrød.) ... "Then their partner will quite rightly ask them, What are you doing? Because the sperm is just as important as the egg." ... which would affect their sperm production. There is some debate over whether stressed-out or diminished Sertoli cells can ...

https://www.vice.com/en/article/neam5b/oh-great-eating-fast-food-might-wreck-your-sperm-count

... second show at The Phatory entitled Sperm Count the focus once again is on quantifiable... ... In Grebelius second show at The Phatory entitled Sperm Count the focus once again is on quantifiable facts that astound by ... In this instance, Grebelius challenges viewers to consider the number of sperm a male can produce over a lifetime as compared ... The ramifications of this enormous sperm-to-egg ratio are considerable in light of the possible number of combinations that ...

http://www.nyartbeat.com/event/2009/C28C

British mens sperm counts have fallen by almost one-third since 1989, which suggests a growing number of men may have problems ...

https://blogs.mercola.com/sites/vitalvotes/archive/2004/01/06/UK-Sperm-Counts-Fall-by-One-Third.aspx

Treatment with folic acid and zinc supplements may raise the sperm count of some men with fertility… ... along with a small increase in abnormal sperm. Men in the fertile group had small increases in sperm count when given folic ... Zinc and folic acid boost sperm count. March 19, 2002 in Nutrition Topics in the News, Vitamins, Minerals, Supplements ... Treatment with folic acid and zinc supplements may raise the sperm count of some men with fertility problems, new research from ...

https://lesliebeck.com/articles/2002/03/19/zinc-and-folic-acid-boost-sperm-count

... ... https://sarahwestall.com/dr-zev-zelenko-jab-death-count-death-by-government-tyranny-censored-real-solutions-2of2/. DR VLADIMIR ...

https://www.bitchute.com/video/8LH2iV5pz0pL/

Keeping the toxins out of your body is the best natural treatment for low sperm count. ... The major causes of low sperm count are stress, genetic causes, varicoceles, infections, nutritional insufficiency, overweight ... Low sperm count is a situation where the quantity of sperm present in ejaculate is lesser than regular because sperm creation ... Keeping the toxins out of your body is one more effective natural treatment for low sperm count. To increase sperm count, you ...

https://www.articlesfactory.com/articles/health/best-and-effective-natural-treatment-for-low-sperm-count.html

Fertility supplement designed to support sperm health. This multi-ingredient formula includes CoQ10, Ashwagandha, Maca, ... Can I Take CountBoost if I Have a Normal Sperm Count? All men - regardless of their count or motility - can derive benefit from ... When things are working well, sperm are produced continually at a rate of roughly 100 million sperm per day and each sperm ... CountBoost Gives Your Sperm Count an Extra Boost. *NATURAL FERTILITY AID with Vitamins, Herbs, and Antioxidants ...

https://www.fairhavenhealth.com/countboost/comment-page-4/

https://www.pacherbs.com/product-tag/sperm-count-boosting/

LOW SPERM COUNT , LOW SPERM MOTILITY , OLIGOSPERMIA TREATMENT View article disclaimer and terms Tags: low spem count ... LOW SPERM COUSE , LOW SPERM COUNT SYMPTOMS , LOW MOTILITY AND OLIGOSPERMA HOMEOPATHY TREATMENT ... All of these subtle but critical factors impact the quality of your eggs and sperm, affecting your ability to conceive and the ...

http://www.worldwidehealth.com/health-article-LOW-SPERM-COUNT-LOW-SPERM-MOTILITY-OLIGOSPERMIA-TREATMENT.html

Sperm counts are dropping among men across the world, according to research published in the academic journal Human ... He believes he knows what is causing the lower sperm counts. He said it has to do with "lifestyle choices and chemicals in the ... Sperm counts are dropping among men across the world, according to research published in the academic journal Human ... The study notes that sperm count declines have accelerated in developed parts of the world, including North America, Europe and ...

https://www.wrtv.com/news/national/male-sperm-count-drop-described-as-public-health-concern-in-new-study

Male infertility may be caused by genetic and/or environmental factors that impair spermatogenesis and sperm maturation. High- ... Semen samples from Lhasa and Shanghai males were analyzed for semen volume, sperm concentration, total sperm count, and sperm ... sperm concentration, sperm motility, sperm morphology, total sperm number, total NFs, and total PR. No significant difference ... The semen samples of males were evaluated to determine conventional sperm parameters, sperm morphology, and sperm movement. ...

https://www.researchsquare.com/article/rs-511098/v1

"The troubling declines in mens sperm concentration and total sperm counts at over 1% each year as reported in our paper are ... that men in those regions share the significant decline in total sperm counts (TSC) and sperm concentration (SC) seen ... Sperm count is not only an indicator of human fertility; it also is an indicator of mens health, with low levels being ... An alarming study shows that the decline in sperm counts in North America, Europe, and Australia has continued and even ...

https://www.jewishpress.com/news/israel/jerusalem/hebrew-u-study-shows-significant-decline-in-sperm-counts-globally/2022/11/15/

The most common causes of male infertility are low sperm production, abnormal sperm function, or problems that affect sperm ... and radiation can adversely affect sperm production and/or sperm function. ... Infertile men have oligospermia (low sperm concentrations compared with reference ranges) or azoospermia (the absence of motile ... sperm in semen)Illness, infection, injury, chronic medical conditions, hormonal disorders, genetic disorders, and lifestyle ...

https://www.hillandponton.com/disease/abnormal-sperm-morphology-motility-and-sperm-count/

29 yrs old Male asked about Less Sperm counts, 1 doctor answered this and 12916 people found it useful. Get your query answered ... How To Optimize Sperm Count and Quality. Dr.Azad. How do I know if my sperm count is low?Low sperm count symptoms might include ... How To Optimize Sperm Count and Quality. Dr.Azad. How do I know if my sperm count is low?Low sperm count symptoms might include ... Sperm count. 1569 Views I masturbate once in 2 days...since i came to know that i have a low sperm count..how much time will it ...

https://www.practo.com/consult/less-sperm-counts-i-m-29-yrs-old-since-around-4-years-i-used-to-keep-masturbate-twice-or-even-more-than-a-thrice-in-a/q

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https://zerflin.com/ketomib/do-weight-loss-jlgtzq-pills-affect-sperm-count/

Tags: motorcycles ed, motorcycles sperm count, straight dope, straight dope motorcycles, the straight dope. ... Motorcycle exhaust greatly reduces sperm count in lab rats, and long-distance bicyclists have been found to suffer from reduced ... sperm count due to overheating of the testes. But youre missing the bigger picture here - having sperm does you no good if you ... Does Riding a Motorcycle Reduce Your Sperm Count?. Sunday - April 14, 2013 by Cecil Adams , No Comments ...

http://wehoville.com/2013/04/14/does-riding-a-motorcycle-reduce-your-sperm-count/

When you see a TFC male infertility specialist can uncover the causes of low sperm count. Get help for male and famle ... What most people refer to as a sperm count is actually a sperm concentration, as it represents the number of sperm present in ... sperm concentration, sperm motility (or the percent of sperm that are actively swimming), and sperm morphology (shape). ... For men with an extremely low sperm count, TFC may recommend sperm injection ICSI in an IVF cycle. ...

https://txfertility.com/male-infertility/causes-low-sperm-count/

In many parts of the world, scientists and fertility doctors are noticing a drop in sperm count and sperm motility (sperm movement), which make it harder for couples to have babies. (livescience.com)
Bisphenol A (BPA), an additive to plastics found in many household products, can lower sperm counts and motility. (livescience.com)
Also, there can be problems of abnormal sperm shape (morphology), movement (motility) or function. (mayoclinic.org)
A study from the European Journal of Nutrition shows that healthy men who consumed two tablespoons of concentrated tomato puree (which forms the base of your pizza topping) per day have a higher proportion of healthy sperm with improved motility. (menshealth.com)
Mushrooms - This super fungi has selenium, an antioxidant that improves sperm motility, while also boosting your immune system. (menshealth.com)
Asparagus - The high level of vitamin C protects sperm from damage and increases motility and volume. (menshealth.com)
Among the long list of smoking's evils is the effect that tobacco smoke can have on reducing both sperm count (quantity) and motility (how fast those swimmers can reach an egg). (thebump.com)
I am diagnosed with male infertility(oligospermia),with low sperm count (10) and low motility. (yogawiz.com)
Can you please suggest me yoga poses to improve sperm count and motility? (yogawiz.com)
To increase sperm count, you should avoid drinking, smoking and other illegal drugs and chemicals that can decrease the quality, amount and the motility of sperm. (articlesfactory.com)
These herbal capsules also facilitate to improve quantity, quality and motility of sperm. (articlesfactory.com)
Sometimes you will need an extra boost in your sperm count or motility or both. (fairhavenhealth.com)
If this describes you, then layer CountBoost and/or Motility Boost on top of FertilAid for Men for the biggest boost to your sperm health. (fairhavenhealth.com)
However, the immigrated Han Chinese had higher sperm motility, lower curvilinear velocity (VCL), and lower LH levels than native Tibetans. (researchsquare.com)
Sperm concentration, motility, and morphology. (hillandponton.com)
A standard semen analysis (or sperm test) actually measures three primary factors: sperm concentration, sperm motility (or the percent of sperm that are actively swimming), and sperm morphology (shape). (txfertility.com)
Does CBD Affect Sperm Motility? (procana.com)
A review found that there's an " extensive body of evidence " that suggests cannabis harms sperm motility. (procana.com)
In simple words, you can say that cannabis affects the morphology and the motility of the sperm. (procana.com)
Genetic makeup also plays an important role in sperm morphology and motility, so researchers also examine these things by keeping this point in mind. (procana.com)
Fertility in men is linked with healthy sperm and their motility. (procana.com)
These properties are also commonly believed to increase the sperm count, motility, and semen volume which is essential in conceiving a baby with their partners or wives. (man-health-magazine-online.com)
Issues may occur with sperm concentration, movement (motility), or shape (morphology) all of which affect sperm quality. (malereproduction.org)
Increased oxidative stress or reactive oxygen species (ROS) are bad and damage sperm and subsequently can reduce sperm count,motility, and morphology . (malereproduction.org)
In addition to changes in exposures and lifestyle factors, medication has been shown in some cases of low sperm count, motility, and/or morphology to improve fertilization and possibly pregnancy outcomes . (malereproduction.org)
IMSEAR at SEARO: Circanual variation of sperm count and motility in men. (who.int)
Treatment with M. pruriens significantly inhibited lipid peroxidation, elevated spermatogenesis, and improved sperm motility. (nih.gov)
Treatment with M. pruriens increased sperm concentration and motility in all the infertile study groups. (nih.gov)
Oligozoospermic patients recovered sperm concentration significantly, but sperm motility was not restored to normal levels in asthenozoospermic men. (nih.gov)
Often times men who chew tobacco or smoke have low sperm counts and poor sperm motility both of which can reduce the chance of conceiving. (orchidrecoverycenter.com)
A higher grade is associated with poorer semen quality, measured using World Health Organization criteria of sperm concentration, motility, and morphology. (medscape.com)
Decreased sperm concentration and motility in a subpopulation of vegetarian males at a designated blue zone geographic region. (theveganrd.com)
8. Improve sperm count, motility, morphology. (acupunctureoakville.com)
For men with a low sperm count or poor motility, IVF/ICSI is usually the best option. (drmalpani.com)
Afterwards, the semen was cooled to 5 °C for 2 h, after that period, filled in 0.5 mL straws and then placed under liquid nitrogen vapor (N L), 8 cm from 2 the liquid sheet for 15 min, and then immersed on the N L. The samples were analyzed for sperm motility, plasma membrane and 2 acrosomal membrane integrity, mitochondrial activity and binding test. (bvsalud.org)

A 2008 study in the journal Fertility and Sterility showed that men with high concentrations of BPA in their urine also had low sperm counts. (livescience.com)
As if having trouble conceiving a child wasn't painful enough, the current method of male fertility testing adds to that misery with multiple trips to the doctor, awkward moments in sterile rooms, and lengthy waits while lab technicians painstakingly count out individual sperm. (popsci.com)
Falling sperm counts and changes to sexual development are "threatening human survival" and leading to a fertility crisis, a leading epidemiologist has warned. (theguardian.com)
The sperm is as important as the egg in making a baby," says Zaher Merhi , M.D., a Connecticut-based board-certified reproductive endocrinologist and the founder of Rejuvenating Fertility Center . (parents.com)
While doctors aren't clear on the direct effect this may have on fertility (there are countries out there with high rates of smokers that are still making babies every minute of the day) there is good evidence that if your partner breaks his habit, he'll see a marked improvement in his sperm within four to six weeks. (thebump.com)
Treatment with folic acid and zinc supplements may raise the sperm count of some men with fertility problems, new research from the Netherlands suggests. (lesliebeck.com)
We can see how male fertility is, in part, a numbers game - the more sperm, the better the chances. (fairhavenhealth.com)
FertilAid for Men provides a male-targeted daily multivitamin plus fertility-specific ingredients you need for sperm health. (fairhavenhealth.com)
They note that sperm count is not only an indicator of human fertility. (wrtv.com)
While the current study did not examine the causes of sperm count declines, Levine pointed to recent research indicating that disturbances in the development of the reproductive tract during fetal life are linked to lifetime impairment of fertility and other markers of reproductive dysfunction. (jewishpress.com)
Swan stressed that low sperm counts do not only affect men's fertility, but have serious ramifications for men's health more generally, and are linked with other adverse trends, termed together as testicular dysgenesis syndrome. (jewishpress.com)
When you see a TFC male fertility specialist, you will also add one more: sperm count. (txfertility.com)
Ask your fertility doctor about the medications that may lead to a low sperm count, including popular Low T therapies . (txfertility.com)
Certain habits and occupations put men at risk for fertility problems, and a lower sperm count can make it difficult to become a father. (txfertility.com)
All these studies suggested that cannabis can cause abnormal morphology in sperm, and as a result, it can affect fertility in men. (procana.com)
It is a very powerful ayuverdic herb that is usually used to increase sperm count and fertility in men. (man-health-magazine-online.com)
There are many different factors that can lower a guy's sperm count, which in turn can affect his fertility (his ability to get a partner pregnant). (youngmenshealthsite.org)
Freezing sperm would allow a man to have children even if he lost his fertility due to cancer or cancer treatment. (medicalnewstoday.com)
Sperm banking is safe and helps you maintain your fertility for years. (clevelandclinic.org)
If the word fertility crops up during conversation we tend to associate this with women but it takes two to make a baby and any couple who are trying for a child are reliant on the male having a healthy sperm count. (listedfit.com)
Healthy sperm does not like radiation and it can affect fertility so avoid radioactivity if at all possible. (listedfit.com)
MUNICH - Even a small varicocele can significantly affect sperm quality and fertility in an otherwise healthy young man, according to a population-based study of more than 7000 army recruits in six European countries. (medscape.com)
But, while that may sound like a bad thing for male fertility, clinical research shows pretty clearly that consuming soy isoflavones has no effect on sperm concentrations in healthy men(4-6). (theveganrd.com)
It is used primarily to stimulates sperm production or it is taken to boost fertility. (healthinsiders.com)
Within just a few generations, human sperm counts may decline to levels below those considered adequate for fertility. (newssnatch.com)

When bacteria are present in the ejaculate, the body produces chemicals that can hinder sperm function. (livescience.com)
And a study in France found that obese men were 42 percent more likely to have low sperm counts than non-obese men, and an 80 percent chance of having ejaculate with no sperm in it at all. (livescience.com)
And instead of giving an exact sperm count, the chip simply tells the user whether they have more or less than the World Health Organization standard of 20 million sperm per milliliter of ejaculate. (popsci.com)
Low sperm count means that the fluid (semen) you ejaculate during an orgasm contains fewer sperm than normal. (mayoclinic.org)
Low sperm count is a situation where the quantity of sperm present in ejaculate is lesser than regular because sperm creation has turn out to be self-conscious. (articlesfactory.com)
There was no difference in median total sperm number (157.76 vs. 151.65 mil/mL), sperm concentration (52.40 vs. 51.79 mil/mL), volume (3.10 vs. 3.10 mL), total normal form sperms (5.91 vs. 6.58 mil/ejaculate, p50), and follicle-stimulating hormone (FSH) levels (4.13 ± 2.55 U/L vs 3.82 ± 2.35 U/L) between the two groups of males. (researchsquare.com)
In one analysis from the paper, sperm concentration per ejaculate among Western men decreased from 100 million sperm/mL to 50 million/mL over 40 years. (theturekclinic.com)
When you ejaculate during orgasm, you release approximately 300 million sperm cells in your semen. (clevelandclinic.org)
The man may not be able to ejaculate, or his ejaculation may propel the sperm backward into his bladder rather than out through the penis. (contemporaryobgyn.net)

Unfortunately, male infertility can result from factors other than a low sperm count, and the chip does not measure other important factors like sperm shape and mobility. (popsci.com)
Doctors cannot always determine the cause of infertility, but some research suggests declining sperm count is playing a role. (parents.com)
Male infertility may be caused by genetic and/or environmental factors that impair spermatogenesis and sperm maturation. (researchsquare.com)
The most common causes of male infertility are low sperm production, abnormal sperm function, or problems that affect sperm transport. (hillandponton.com)
Infertile men have oligospermia (low sperm concentrations compared with reference ranges) or azoospermia (the absence of motile sperm in semen)Illness, infection, injury, chronic medical conditions, hormonal disorders, genetic disorders, and lifestyle choices (e.g., heavy alcohol use, smoking, or illicit drug use) also may contribute to male infertility. (hillandponton.com)
While most genetic causes of low or the complete absence of sperm production are rare, many chronic conditions and/or medications used to treat them are common causes of male infertility. (txfertility.com)
Even at the reduced sperm counts, infertility has not become a widespread problem. (usf.edu)
Male infertility refers to the inability to generate enough sperm count or enough good. (aaradhyafertility.com)
In fact, one case report found that isoflavone supplements improved sperm concentration in a man seeking treatment for infertility. (theveganrd.com)
It may be perfectly healthy but not accompanied by enough other sperm, for although only one sperm is ultimately required for fertilization, men whose semen contains less that 20 million sperm per milliliter frequently have infertility problems. (contemporaryobgyn.net)
Therefore, when treating infertility, it is necessary that the male partner receive a sperm analysis. (acupunctureoakville.com)
Male infertility is because of little sperm production, the function of the sperm will be abnormal or blockages that stop the delivery of sperms. (siiut.com)

In previous studies, no significant difference was observed between the sperm concentrations, straight-line velocity (VSL), percentage of morphologically normal sperms, total T concentration, or FSH levels between normal fertile males (33 native Tibetans vs. 23 immigrated Han Chinese who stayed at HAs for over 3 years). (researchsquare.com)
Swan and her colleagues combed the scientific literature for studies that had examined sperm counts and concentrations and screened more than 7,000 studies, excluding those that had shortcomings or flaws. (usf.edu)
While no one knows why sperm counts and concentrations may be falling, there are a variety of theories. (usf.edu)
It also found that regular cannabis smoking was associated with twenty-eight percent lower sperm concentrations and a twenty-nine percent lower total sperm count. (procana.com)
Those men who used cannabis more than once a week with other recreational substances had fifty-two percent lower sperm concentrations and fifty-five percent lower total sperm count. (procana.com)
According to this study, people who had smoked cannabis in the past had higher sperm concentrations than those who had never smoked cannabis. (procana.com)
This week, it's all about how vegan and vegetarian men have low sperm concentrations . (theveganrd.com)
Should you be concerned about the fact that the vegetarians and vegans in this study had sperm concentrations that were lower than those of the meat-eaters? (theveganrd.com)
Finally, while sperm concentrations were lower among the vegetarian groups, they weren't low enough to matter. (theveganrd.com)
This would be a logical explanation if the men weren't supplementing, since vitamin B12 levels are correlated with sperm concentrations(3). (theveganrd.com)
And higher intakes of antioxidants-abundant in plant foods, of course-are linked to better sperm concentrations(10). (theveganrd.com)
Dr. Hagai Levine was one of the lead scientists involved in the study, and he found that for men in North America, Europe, Australia and New Zealand, sperm concentrations declined by 52.4 percent during the study period, and total sperm count declined by a whopping 59.3 percent. (theeconomiccollapseblog.com)
The most important data points in the new study involved sperm concentrations for what are known as "unselected" men who haven't yet proven they are fertile. (theeconomiccollapseblog.com)
Workplace exposure assessment of BNNT from two manufacturing facilities measured boron concentrations in personal breathing zones from non-detectable to 0.95g/m3 and TEM structure counts of 0.0123 0.0094 structures/cm3, concentrations well below what was found with other engineered high aspect ratio nanomaterials like carbon nanotubes and nanofibers. (cdc.gov)

Some experts point to the fact that bacterial infections such as gonorrhea can have an impact on the testicles, which in turn affects sperm production. (livescience.com)
The production of sperm is a complex process and requires normal functioning of the testicles (testes) as well as the hypothalamus and pituitary glands - organs in your brain that produce hormones that trigger sperm production. (mayoclinic.org)
Once sperm are produced in the testicles, delicate tubes transport them until they mix with semen and are ejaculated out of the penis. (mayoclinic.org)
Sperm develops in the testicles, but that's not the only part of a person's anatomy that matters for sperm production. (parents.com)
When things are working well, sperm are produced continually at a rate of roughly 100 million sperm per day and each sperm takes about 42 to 76 days of temps 2 degrees cooler than the body (hence the testicles hanging outside) to mature into a streamlined profile of sperm cells. (fairhavenhealth.com)
Other potentially important structural issues include undescended testicles, sperm duct problems, and blockages in the tubes that transport sperm (vas deferens). (txfertility.com)
Hormones drive the production of sperm, and sometimes the hormonal signals between the brain, pituitary and testicles can stall or cease altogether. (txfertility.com)
Typically, millions of sperm cells are produced in the testicles every day. (medicalnewstoday.com)
Your testes (testicles) produce sperm. (clevelandclinic.org)
The new study shows that having a mobile phone close to the testicles - or within a foot or two of the body - can lower sperm levels so much that conceiving could be difficult . (theeconomiccollapseblog.com)

The testes are at their best - in terms of making healthy sperm - at temperatures slightly lower than the body. (orlandohealth.com)
Some vitamins - particularly D, C, E and CoQ10 - are important for healthy sperm. (orlandohealth.com)
Any man who wishes to have a child must have a healthy sperm count. (listedfit.com)
Healthy sperm hates smoke and smoking makes the sperm sluggish and small, hence this could cause problems for men who are trying to have a child. (listedfit.com)
It pays to take care of healthy sperm, look after your general health, stop smoking, reduce stress levels and stay in shape. (listedfit.com)

The current state of reproductive affairs can't continue much longer without threatening human survival," she writes in Count Down. (theguardian.com)
In the book, Swan and co-author Stacey Colino explore how modern life is threatening sperm counts, changing male and female reproductive development and endangering human life. (theguardian.com)
I and many in the scientific community were skeptical when we saw this sweeping conclusion based on one study," says Dr. Swan, who recently co-authored Count Down: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race . (parents.com)
The troubling declines in men's sperm concentration and total sperm counts at over 1% each year as reported in our paper are consistent with adverse trends in other men's health outcomes, such as testicular cancer, hormonal disruption, and genital birth defects, as well as declines in female reproductive health. (jewishpress.com)
The fluid in a woman's reproductive tract has all of the nutrients that sperm need for their survival during that time. (medicalnewstoday.com)
Once inside the female reproductive tract, the sperm cells must swim through the cervix and into the uterus to reach the fallopian tubes and female egg. (medicalnewstoday.com)
However, if a couple were having intercourse in the water, pregnancy would be just as likely because the sperm would enter directly into the female reproductive tract. (medicalnewstoday.com)
Sperm cells are reproductive cells in men and people assigned male at birth (AMAB). (clevelandclinic.org)
Even banking a low number of quality sperm can help you have children through assisted reproductive procedures. (clevelandclinic.org)
That study "suggested that testicular size was smaller, sperm output was reduced, and testicular secretion of serum inhibin B was decreased," said Roger Hart, MD, professor of reproductive medicine at the University of Western Australia in Crawley, who was one of the Australian investigators. (medscape.com)

Your sperm count is considered lower than normal if you have fewer than 15 million sperm per milliliter of semen. (mayoclinic.org)

The new clinical trial is testing a contraceptive gel that men rub on their arms and shoulders daily to reduce sperm count. (medlineplus.gov)

The goal of pharmacotherapy is to improve sperm count. (medscape.com)

More recently, a broad analysis of various studies suggested a potential link between intense exercise - cycling in particular - and poor sperm quality. (orlandohealth.com)
Whenever anyone mentions that they have issues with their weight or general fitness it is automatically assumed that they are obese but those who are underweight may produce poor sperm too. (listedfit.com)

In 2019 , Urology published a study based on semen analysis from nearly 120,000 cisgender men showing motile sperm count had declined 10 percent over 16 years. (parents.com)
While there are many other important factors involved in a semen analysis - such as seminal volume, the presence or absence of white blood cells, and the quality of sperm movement (to name a few), most lay people focus on sperm concentration. (txfertility.com)
If a semen analysis reveals a low sperm count, we will perform additional testing to ascertain the cause. (txfertility.com)
And other tests may include such as physical and general examination and medical history, transrectal ultrasound, scrotal ultrasound, semen analysis, specialized sperm function tests. (siiut.com)

Sperm production numbers are big because they have to be - a single ejaculation may contain up to 150 million sperm but only roughly 15% of those will be perfectly normal sperm that can penetrate an egg. (fairhavenhealth.com)
Spinal cord injuries, diabetes, and certain surgeries can block the normal flow of sperm, and/or lead to retrograde (backward) ejaculation. (txfertility.com)
The average ejaculation introduces 50 million sperm into your vagina. (laivfclinic.com)
After ejaculation, sperm can live inside the female body for around 5 days . (medicalnewstoday.com)
However, it takes time to build up (replenish) your sperm cell levels after each ejaculation. (clevelandclinic.org)

The study, which included about 100 infertile men, did not look at whether this boost in sperm number translated to better odds of conceiving. (lesliebeck.com)
After treatment, the infertile men given both supplements showed a 74% increase in the number of normal sperm in their semen, along with a small increase in abnormal sperm. (lesliebeck.com)
Semen quality varies by reason for testing: sperm donors, infertile men, prevasectomy (fertile) men. (theturekclinic.com)

A low sperm count is also called oligospermia (ol-ih-go-SPUR-me-uh). (mayoclinic.org)

But these studies didn't focus on motile sperm count, or the number of sperm that swim . (parents.com)

Lifesaving cancer treatment either surgery, chemotherapy, or radiation therapy can destroy sperm cells, and greatly decrease a man's sperm count. (txfertility.com)
Structural problems with the penis that can cause a man's sperm count to plummet include Peyronie's disease (in which plaque and/or scar tissue builds up in the penis), as well as problems with inflammation and scar tissue that can interfere with the normal ejaculatory process. (txfertility.com)
Sperm concentration is the measure of the concentration of sperm in a man's sample - how many millions of sperm are in a milliliter of semen. (usf.edu)
A research claims that phone radiation may also drop a man's sperm count by 30 percent, so guys, you'd better avoid wearing you phone in your trouser pockets. (gsmarena.com)

A complete absence of sperm is called azoospermia. (mayoclinic.org)
For men with azoospermia ( zero sperm count), we need to use additional procedures, such as TESE. (drmalpani.com)

It comes after a study she co-authored in 2017 found that sperm counts in the west had plummeted by 59% between 1973 and 2011, making headlines globally. (theguardian.com)

Recreational drugs and alcohol will also have a negative effect on sperm. (listedfit.com)
They also proposed that the higher soy content of vegetarian diets might have an effect on sperm concentration. (theveganrd.com)
Exposure of low concentration of DBCP produced no significant effect on sperm count. (cdc.gov)

It is the absence of sperm or a zero sperm count. (man-health-magazine-online.com)

An alarming study shows that the decline in sperm counts in North America, Europe, and Australia has continued and even accelerated in the 21st century. (jewishpress.com)
The data show, for the first time, that men in those regions share the significant decline in total sperm counts (TSC) and sperm concentration (SC) seen previously in North America, Europe, and Australia. (jewishpress.com)
The analysis found an overall 52.4 percent decline in sperm concentration and a 59.3 percent decline in the total sperm count over the 39-year period. (usf.edu)
Prof. Suleiman Ambali of the Department of Veterinary Pharmacology and Toxicology, University of Ilorin, has warned that continuous exposure of humans to pesticides is causing decline in male sperm count. (dailytrust.com)
comparisons had a mean decline of 1.172 million sperms per milliliter. (cdc.gov)

Research led by the Population Council in 1997 found that stress hormones overpower the enzymes responsible for ensuring that cells in the testes produce testosterone, which is necessary for sperm formation. (livescience.com)
Tight-fitting garments might be ideal for biking, but they may not be doing any favors for your sperm-producing testes. (orlandohealth.com)
Your testes are constantly producing sperm, but it takes two or three months to mature. (orlandohealth.com)
Motorcycle exhaust greatly reduces sperm count in lab rats, and long-distance bicyclists have been found to suffer from reduced sperm count due to overheating of the testes. (wehoville.com)
Mumps, sexually transmitted diseases such as Chlamydia, or urinary tract infections can leave scars that block the delicate tubes that transport sperm from the testes to the penis. (txfertility.com)

Formulated to provide the nutrients most well-known to positively impact sperm count. (fairhavenhealth.com)
According to this study, if you have been using cannabis in the past but left it late, it can still negatively impact sperm functions. (procana.com)
Some types of dairy foods may negatively impact sperm parameters, too(9). (theveganrd.com)

Stress can decrease sexual function and interfere with the hormones needed to produce sperm. (livescience.com)
Injections of pituitary hormone may be used to help men produce sperm. (medlineplus.gov)

This herb also helps in increasing sperm count like any other herbal medicines. (man-health-magazine-online.com)
Pomegranate not only increases blood in our body but also helps in increasing sperm count in men. (time.news)

In some men, an underlying problem such as an inherited chromosomal abnormality, a hormonal imbalance, dilated testicular veins or a condition that blocks the passage of sperm may cause signs and symptoms. (mayoclinic.org)
Although some infections can result in permanent testicular damage, most often sperm can still be retrieved. (mayoclinic.org)
Among the most frequently cited trends, along with trends in sperm count and testicular cancer, are increases in the male genital birth defects of hypospadias and cryptorchidism (3-5). (cdc.gov)

An international team of scientists analyzed data from nearly 43,000 men in dozens of industrialized countries and found that sperm counts dropped by more than half over nearly four decades. (usf.edu)

Researchers believe this may be due to the sedentary nature of TV-watching, since the guys in the study who exercised 15 or more hours each week had sperm counts that were significantly higher than those of men who exercised fewer than 5 hours a week. (livescience.com)
Sperm production can be impacted significantly by temperature. (orlandohealth.com)
After these treatments, your sperm cell numbers may decrease significantly, or you may no longer be able to make sperm. (clevelandclinic.org)
Seminal plasma cobalamin significantly correlates with sperm concentration in men undergoing IVF or ICSI procedures. (theveganrd.com)

One effective procedure in vitro fertilization with intracytoplasmic sperm injection (ICSI). (clevelandclinic.org)
3. Those who will require surgically retrieved sperm for ICSI. (who.int)

While medical reasons can cause low sperm count, including defects in the tubes that carry sperm, experts point to other factors that may also affect sperm count. (parents.com)
Surgeries to reverse vasectomy can produce successful results to restore patency in the tubes that carry sperm. (txfertility.com)

And while low to moderate alcohol use is OK, researchers say too much alcohol consumption can lower testosterone levels and sperm production. (parents.com)
I am always looking for natural ways to boost my testosterone - which begs the question: Does drinking one's own sperm boost testosterone? (youngmenshealthsite.org)
Body weight is influenced by the testosterone and oestrogen levels and the sperm count can be damaged by an imbalance. (listedfit.com)

Research has linked smoking to decreased sperm density, total sperm counts, and total motile sperm. (parents.com)

This latest analysis, with data from 53 countries, was published today in the journal Human Reproduction Update ( Temporal trends in sperm count: A systematic review and meta-regression analysis of samples collected globally in the 20th and 21st centuries ). (jewishpress.com)

This can increase the sperm count. (time.news)
These increase the sperm count. (time.news)

Seasonal variation in rhythmicity of spermatogenesis might be due to external temperature fluctuation which could partially be responsible for decreased sperm counts in summer. (who.int)
Effect of high altitude exposure on spermatogenesis and epididymal sperm count in male rats. (bvsalud.org)

Genetic makeup is another factor that was ignored by all the researchers on cannabis and its effects on sperms. (procana.com)
The head contains all of the DNA or genetic material, and the sperm uses the tail to help it move. (medicalnewstoday.com)
Chemotherapy and radiation may damage the genetic material in your developing sperm, but your mature sperm are resistant to damage. (clevelandclinic.org)
Germline testing is performed to identify an inherited genetic variant that is passed down from one or both parents, or in some cases germline testing will identify a mutation which occurs for the first time in the egg or sperm cell (de novo mutation). (cdc.gov)

Problems with any of these systems can affect sperm production. (mayoclinic.org)
Some infections can interfere with sperm production or sperm health or can cause scarring that blocks the passage of sperm. (mayoclinic.org)
In short, it might be impossible to make amends with your body for having treated it poorly during your teen years, at least in terms of your sperm production. (askmen.com)
The scientists also noted that the men on the Western diets had lower levels of a hormone called inhibin-B. That could mean that they had fewer functional Sertoli cells, which would affect their sperm production. (vice.com)
Animal research has suggested that nutrition affects the production of sperm, although the key nutrients remain unclear. (lesliebeck.com)
Doing exercise up to 30 minutes in a day helps to improve the production of sperm. (articlesfactory.com)
When the scrotal region gets heated for long time, then sperm production can be reduced slowly. (articlesfactory.com)
In addition, frequent exposure to certain environmental elements such as high temperatures, toxins, medications, and radiation can adversely affect sperm production and/or sperm function. (hillandponton.com)
Are you just trying to raise your sperm count, or are you trying to return to your normal natural test production? (t-nation.com)
5 Diets to Eliminate Sperm Production Deficiency in Men. (time.news)
Among fruits, banana has the power to increase sperm production. (time.news)
If you eat it daily, sperm production will be active in the body. (time.news)
Apart from the above mentioned foods, tomatoes which are readily available to us also have properties to increase sperm production. (time.news)
Sex hormones also play a role in the menstrual cycle and sperm production. (hgh-therapy-rx.com)
Others affect the production and quality of the sperm itself. (siiut.com)
Some medicines may change sperm delivery, function and production. (siiut.com)

I've always been very skeptical of previous reports that have suggested that sperm counts are declining," says Allan Pacey , a professor of andrology at the University of Sheffield in England who was not involved in the new research. (usf.edu)

In that case, excessive cycling - whether it's on the road or in your living room - might create complications by damaging the quantity and/or quality of your sperm. (orlandohealth.com)
However, as you age, the quality of your sperm may decrease. (clevelandclinic.org)

It not only increases sperm count but also improves sperm quality. (time.news)
Also improves sperm quality. (time.news)
It is concluded that the addition of synthetic amino acids in the semen of sheep before cryopreservation improves sperm quality and fertilization potential and can thus be added in cryopreservation protocols. (bvsalud.org)

She was also part of a team that found that sperm count declined 50 to 60 percent between 1973 and 2011. (parents.com)
Researchers estimated that these men had an average sperm concentration of 99 million per milliliter in 1973 but that that had dropped to an average 47 million per milliliter in 2011. (theeconomiccollapseblog.com)

The person contributing sperm, either as a partner or donor, is typically fertile at any time-but not always. (parents.com)
Decide between known and unknown Decide whether to enlist someone you know to donate sperm, or use an anonymous donor. (howcast.com)
Things to consider include live birth data, their policy regarding donor privacy if a child develops a medical problem, and any limits on how many children a sperm donor can father. (howcast.com)
Stock up If you choose an anonymous donor, stock up on his sperm if you think you might want another child who is a full sibling. (howcast.com)
FACT: At one California sperm bank, would-be parents can be matched with a sperm donor who looks like a celebrity they'd like their child to resemble. (howcast.com)
If we don't find any sperm after the TESA/TESE procedure, we recommend that our patients opt for donor sperm or consider adoption. (drmalpani.com)

Maybe falling sperm counts are of no concern , as women are healthier and more fertile than ever before and (luckily) demand less sperm from us to get the job done. (theturekclinic.com)

it will not cause decrease in sperm count. (practo.com)
Since this is the best study that's ever been done, it is concerning that it suggests such a progressive and dramatic decrease in sperm counts over time," says Peter Schlegel , a professor and chairman of urology at Weill Cornell Medicine in New York. (usf.edu)

Still, they suggested it was premature to say whether cycling itself affected sperm quality. (orlandohealth.com)

This article was amended on 27 February 2021 to remove an erroneous reference to a median sperm count. (theguardian.com)

So what is causing this alarming drop in sperm levels? (theeconomiccollapseblog.com)

It can affect the sperm count, additionally, it can affect ovulation and sometimes pregnancy . (procana.com)
Many factors that can affect the sperm formation process. (medicalnewstoday.com)

Anatomy16

Organisms2

Diseases11

Chemicals and Drugs9

Analytical, Diagnostic and Therapeutic Techniques and Equipment17

Psychiatry and Psychology2

Phenomena and Processes26

Information Science2

Health Care3

Geographicals1

The degenerative fate of germ cells not conforming to stage in the pubertal golden hamster testis. (1/1363)

Lack of effects of recombinant human GH on spermatogenesis in the adult cynomolgus monkey (Macaca fascicularis). (2/1363)

Meiotic abnormalities and spermatogenic parameters in severe oligoasthenozoospermia. (3/1363)

Screening methods for thyroid hormone disruptors. (4/1363)

Inhibin B plasma concentrations in oligozoospermic subjects before and after therapy with follicle stimulating hormone. (5/1363)

Evolution of semen quality in North-eastern Spain: a study in 22,759 infertile men over a 36 year period. (6/1363)

Relationship between psychological stress and semen quality among in-vitro fertilization patients. (7/1363)

Comparative evaluation of two density gradient preparations for sperm separation for medically assisted conception. (8/1363)

Sperm Count

Semen

Sperm Motility

Infertility, Male

Sperm Head

Semen Analysis

Oligospermia

Spermatogenesis

Spermatozoa

Testis

Fertility

Sperm Capacitation

Epididymis

Ejaculation

Azoospermia

Asthenozoospermia

Lepidium

Sperm-Ovum Interactions

Testosterone

Sperm Maturation

Insemination, Artificial, Homologous

Sperm Injections, Intracytoplasmic

Fertilization

Contraceptive Agents, Male

Genitalia, Male

Semen Preservation

Sperm Transport

Organ Size

Leukocyte Count

Seminiferous Tubules

Insemination, Artificial

Follicle Stimulating Hormone

Varicocele

Vasectomy

Acrosome

Reproduction

MEDLARS

Pregnancy

Seminal Plasma Proteins

Sperm Midpiece

CD4 Lymphocyte Count

Platelet Count

Infertility

Luteinizing Hormone

Sexual Abstinence

Sperm Banks

Pregnancy Rate

Inhibins

Seminal Vesicles

Chromosomes, Human, Y

Paternal Exposure

Genital Diseases, Male

Zona Pellucida

Environmental Pollutants

Sexual Maturation

Time Factors

Hydrocarbons, Brominated

Cell Count

Hypogonadism

Litter Size

Blood Cell Count

Denmark

Sertoli Cells

Seminiferous Epithelium

Sexual Behavior, Animal

Cryopreservation

Testicular Neoplasms

Sex Hormone-Binding Globulin

Sperm Whale

Cryptorchidism

Body Weight

Spermatids

Meiosis

Ovum

The degenerative fate of germ cells not conforming to stage in the pubertal golden hamster testis. (1/1363)

Lack of effects of recombinant human GH on spermatogenesis in the adult cynomolgus monkey (Macaca fascicularis). (2/1363)

Meiotic abnormalities and spermatogenic parameters in severe oligoasthenozoospermia. (3/1363)

Screening methods for thyroid hormone disruptors. (4/1363)

Inhibin B plasma concentrations in oligozoospermic subjects before and after therapy with follicle stimulating hormone. (5/1363)

Evolution of semen quality in North-eastern Spain: a study in 22,759 infertile men over a 36 year period. (6/1363)