Vitamin a. Medical search. Frequent questions

Vitamin D deficiency rickets among breastfed infants is rare, but it can occur if an infant does not receive additional vitamin D from foods, a vitamin D supplement, or adequate exposure to sunlight. (cdc.gov)
To avoid developing a vitamin D deficiency, the Dietary Guidelines for Americans and American Academy of Pediatrics recommend breastfed and partially breastfed infants be supplemented with 400 IU per day of vitamin D beginning in the first few days of life. (cdc.gov)
Why are infants at risk for vitamin D deficiency? (cdc.gov)
The risk for vitamin D deficiency is increased when there is limited exposure to sunlight or when an infant is not consuming an adequate amount of vitamin D. Although reducing sun exposure is important for preventing cancer, it also decreases the amount of vitamin D that a person can make from sunlight. (cdc.gov)
The cutoff between normal vitamin B12 levels and deficiency varies by method and laboratory, but most laboratories define subnormal serum or plasma values as those lower than 200 or 250 pg/mL (148 or 185 pmol/L) [ 2 ]. (nih.gov)
Levels of serum methylmalonic acid (MMA), a vitamin B12-associated metabolite, are the most sensitive markers of vitamin B12 status, and an MMA level greater than 0.271 micromol/L suggests vitamin B12 deficiency [ 6-8 ]. (nih.gov)
a serum homocysteine level higher than 15 micromol/L, for example, suggests vitamin B12 deficiency [ 11 ]. (nih.gov)
Experts suggest that if a patient's serum vitamin B12 level is less than 150 pg/ml (111 pmol/L), the patient's serum MMA levels should be checked to confirm a diagnosis of vitamin B12 deficiency [ 7 , 9 ]. (nih.gov)
This new study supports the idea that vitamin D deficiency makes a difference. (medscape.com)
Vitamin D deficiency can lead to weakened bones ( osteoporosis in adults or rickets in children). (medlineplus.gov)
For example, vitamin A plays a crucial role in the immune system such that a deficiency in this essential vitamin is strongly associated with infectious diseases. (bartleby.com)
Laboratory tests for vitamin D are used to determine a person's vitamin D status, and to identify persons with vitamin D deficiency. (cdc.gov)
These tests must be accurate to ensure correct diagnoses and treatment of patients with vitamin D deficiency. (cdc.gov)
Some reports suggest nearly half the world's population suffers from vitamin D deficiency, which is unsettling news given that a lack of vitamin D has been associated with a host of serious conditions: cancer, heart disease , diabetes , multiple sclerosis, tuberculosis and even depression, not to mention brittle bones and the common cold. (yahoo.com)
It's a long list because the vitamin D steroid hormone affects different genes in different tissues,' says John Cannell, founder of the Vitamin D Council and author of 'Autism Causes, Prevention and Treatment: Vitamin D Deficiency and the Explosive Rise of Autism Spectrum Disorder. (yahoo.com)
While previous studies have shown a link between a vitamin D deficiency and increased mortality, the possibility that low levels of vitamin D were the result of poor health could have distorted those findings. (yahoo.com)
For the first time, a causal relationship between a vitamin D deficiency and increased mortality was established. (yahoo.com)
Vitamin D deficiency causes neuronal apoptosis and hinders the growth and survival of neurons, leading to the impairment of neurological function. (yahoo.com)
Given their findings, Wi adds that 'a vitamin D deficiency should be avoided, especially in people with a high risk of sudden cardiac arrest. (yahoo.com)
The researchers discovered that when compared with subjects with normal levels of vitamin D, those with low levels had a 53 percent increased risk of developing dementia, while those with a severe deficiency had a 125 percent increased risk. (yahoo.com)
Plus, people with lower levels of vitamin D were almost 70 percent more likely to develop Alzheimer's disease, while those with a severe deficiency were more than 120 percent more likely to do so. (yahoo.com)
Healthcare providers often give vitamin K1 supplements to infants just after birth to prevent vitamin K deficiency bleeding (VKDB). (healthline.com)
Vitamin C supplementation did not lead to a difference in iron absorption, lab indices of iron deficiency, or the biological half-life of iron. (medscape.com)
Li and colleagues looked at the effect of vitamin C supplementation on iron levels in women with iron deficiency anemia. (medscape.com)
Absorption of this fat-soluble vitamin is reduced with alcohol use, with vitamin E deficiency, with cortisone medication, and with excessive iron intake or the use of mineral oil, as well as with exercise. (healthy.net)
Actually, analysis of the average American diet reveals that it provides only about 4,000 units of vitamin A daily, so the many problems of vitamin A deficiency, such as visual changes, skin dryness, and increased infections, are more common than most people realize. (healthy.net)
Vitamin A deficiency may allow irritation or inflammation of the eye tissue to occur more easily. (healthy.net)
Historically, when intake of vitamins from diet was lacking, the results were vitamin deficiency diseases. (wikipedia.org)
The ancient Egyptians knew that feeding liver to a person may help with night blindness, an illness now known to be caused by a vitamin A deficiency. (wikipedia.org)
The advancement of ocean voyages during the Age of Discovery resulted in prolonged periods without access to fresh fruits and vegetables, and made illnesses from vitamin deficiency common among ships' crews. (wikipedia.org)
March 18, 2010 (Atlanta, Georgia) - Adding heft to the hypothesis that vitamin-D deficiency is linked to cardiovascular disease, a new study has found that people with low vitamin-D levels who managed to normalize their levels were significantly less likely to develop cardiovascular events over up to six years of follow-up. (medscape.com)
30 ng/mL was used to define vitamin-D deficiency. (medscape.com)
Vitamin-D deficiency is already known to increase the risks of skeletal disease, he notes. (medscape.com)
It could help reduce vitamin A deficiency and childhood blindness in developing countries. (bbc.co.uk)
The World Health Organization estimates up to 500,000 children go blind each year because of vitamin A deficiency. (bbc.co.uk)
Not everyone believes golden rice is the best answer to Vitamin A deficiency. (bbc.co.uk)
The problem is that you're trying to fix vitamin A deficiency with a narrow GM solution when the problem is much more complex," said Clare Oxborrow, from the anti-GM group Friends of the Earth. (bbc.co.uk)
Endocrine disorders such as vitamin D deficiency or insufficiency can lead to loss of bone mineral density as well as a reduction in muscle mass, strength and function," he said. (eurekalert.org)
The main conclusion was that individuals with vitamin D deficiency, defined as less than 30 nanomoles per liter in the blood, had a 70% higher risk of developing dynapenia by the end of the four-year study period than those with normal levels of vitamin D, defined as more than 50 nmol/L. (eurekalert.org)
The results proved that the risk of muscle weakness is heightened by both vitamin D deficiency and insufficiency, Alexandre said. (eurekalert.org)
Another conclusion to be derived from the results of the study is that it's important to take vitamin D if you have a deficiency or insufficiency," he added. (eurekalert.org)
There are many more days of sunlight per year in Brazil, and yet we're known to have a high incidence of vitamin D deficiency and insufficiency, especially among older people. (eurekalert.org)
Also, many with eating disorders have a Vitamin B2 and B6 deficiency. (healthyplace.com)
Unlike other B vitamins, riboflavin is not found in many foods, so the most common cause of deficiency is lack of dietary intake, especially in the elderly. (healthyplace.com)
Scurvy (Vitamin C deficiency) was first discovered in British sailors who were not consuming many foods that contained Vitamin C. From then on they carried Vitamin C-packed limes on their voyages. (healthcastle.com)
Vitamin C deficiency is rare in North America. (healthcastle.com)
3 ] Vitamin A deficiency is not uncommon, and maternal supplementation may be needed during lactation to achieve the recommended daily vitamin A intake. (nih.gov)
200 mcg/L) indicates biochemical vitamin A deficiency, and 0.7 to 1.05 micromoles/L (200 to 300 mcg/L) indicates marginal deficiency. (nih.gov)
Numerous studies targeting lactating women living in regions with endemic vitamin A deficiency have evaluated the effects of a single vitamin A dose of 200,000 to 400,000 IU given in the early postpartum period. (nih.gov)
[ 1 ] The current proper diagnostic term that has been adopted is "vitamin K deficiency bleeding" (VKDB), because vitamin K deficiency is not the sole cause of hemorrhagic disorders in preterm and term infants. (medscape.com)
Although some controversy surrounds the postnatal timing of the initial hemorrhage, vitamin K deficiency bleeding is usually classified by three distinct time periods after birth, as discussed below. (medscape.com)
Early-onset vitamin K deficiency bleeding usually occurs during first 24 hours after birth. (medscape.com)
The mechanisms by which anticonvulsant and antituberculosis medications cause vitamin K deficiency bleeding in neonates is not clearly understood, but limited studies suggest that this disorder is a result of vitamin K deficiency and can be prevented by administration of vitamin K to the mother during the last 2-4 weeks of pregnancy. (medscape.com)
When vitamin K supplementation is given after the birth for early-onset vitamin K deficiency bleeding, it may be too late to prevent this disease, especially if vitamin K supplementation was not provided during pregnancy. (medscape.com)
Numerous other maternal medications and/or exposure to toxins during pregnancy are lalso associated with vitamin K deficiency bleeding in neonates, including but not limited to vitamin K antagonists (eg, warfarin, phenprocoumon). (medscape.com)
Classic vitamin K deficiency bleeding usually occurs after 24 hours after birth but may present as late as the first week of life. (medscape.com)
however, it can occur during first month and sometimes overlaps with late-onset vitamin K deficiency bleeding. (medscape.com)
Classic vitamin K deficiency bleeding is observed in infants who have not received prophylactic vitamin K at birth, with an incidence ranging from 0.25 to 1.7 cases per 100 births. (medscape.com)
Vitamin K content is low in mature human milk, with a range of 1-4 μg/L. Industrial contaminants in breast milk have also been implicated in promoting vitamin K deficiency bleeding. (medscape.com)
Folic acid deficiency is the most common B vitamin deficiency. (healthyplace.com)
The importance of vitamin D3 in reducing the risk of these diseases continues to increase due to the fact that an increasing portion of the population in developed countries has a significant vitamin D deficiency. (nih.gov)
The older population is at an especially high risk for vitamin D deficiency due to the decreased cutaneous synthesis and dietary intake of vitamin D. Recent studies have confirmed an association between cognitive impairment, dementia, and vitamin D deficiency. (nih.gov)
If you shun the sun, wear sunscreen, suffer from milk allergies, or adhere to a strict vegan diet, you may be at risk for vitamin D deficiency. (webmd.com)
Traditionally, vitamin D deficiency has been associated with rickets, a disease in which the bone tissue doesn't properly mineralize, leading to soft bones and skeletal deformities. (webmd.com)
Symptoms of bone pain and muscle weakness can mean you have a vitamin D deficiency. (webmd.com)
Because the body makes vitamin D when your skin is exposed to sunlight, you may be at risk of deficiency if you are homebound, live in northern latitudes, wear long robes or head coverings for religious reasons, or have an occupation that prevents sun exposure. (webmd.com)
During the winter, vitamin D deficiency can be more prevalent because there is less sunlight available. (webmd.com)
Some studies show that older adults with darker skin are at high risk of vitamin D deficiency. (webmd.com)
As people age, their kidneys are less able to convert vitamin D to its active form, thus increasing their risk of vitamin D deficiency. (webmd.com)
A level less than 12 ng/mL indicates vitamin D deficiency. (webmd.com)
Treatment for vitamin D deficiency involves getting more vitamin D -- through diet and supplements. (webmd.com)
Doctors may prescribe more than 4,000 IU to correct a vitamin D deficiency. (webmd.com)
If you don't spend much time in the sun or always are careful to cover your skin ( sunscreen inhibits vitamin D production), you should speak to your doctor about taking a vitamin D supplement, particularly if you have risk factors for vitamin D deficiency. (webmd.com)
Efforts to tackle obesity should thus also help to reduce levels of vitamin D deficiency in the population, says the lead investigator of the study. (sciencedaily.com)
While previous studies have linked vitamin D deficiency with obesity, the ICH-led paper, published in the journal PLOS Medicine , sought to establish the direction of causality, i.e. whether a lack of vitamin D triggers a weight gain, or whether obesity leads to the deficiency. (sciencedaily.com)
Vitamin D deficiency is a growing public health concern, and there is evidence that vitamin D metabolism, storage and action both influence and are influenced by adiposity or body fat. (sciencedaily.com)
Overall, the ICH results suggest that although increases in vitamin D are not likely to help with weight regulation, increased risk of vitamin D deficiency could contribute to the adverse health effects associated with obesity. (sciencedaily.com)
Dr Elina Hypponen, UCL Institute of Child Health and lead author of the study, says: "Vitamin D deficiency is an active health concern around the world. (sciencedaily.com)
While many health messages have focused on a lack of sun exposure or excessive use of suncreams, we should not forget that vitamin D deficiency is also caused by obesity. (sciencedaily.com)
Our study highlights the importance of monitoring and treating vitamin D deficiency in people who are overweight or obese, in order to alleviate adverse health effects caused by a lack of vitamin D. (sciencedaily.com)
Vitamin D deficiency occurs when the body doesn't get enough vitamin D from sunlight or diet. (healthline.com)
Vitamin D deficiency can cause loss of bone density, osteoporosis, and broken bones. (healthline.com)
It's no surprise, then, that vitamin D deficiency is one of the most common nutritional deficiencies worldwide ( 1 ). (healthline.com)
One research review found that almost 42% of U.S. adults have a vitamin D deficiency. (healthline.com)
Video: what are the symptoms of a vitamin D deficiency? (healthline.com)
Vitamin D deficiency can be difficult to notice because symptoms may not occur for several months or years. (healthline.com)
Recently, vitamin D deficiency has been linked to an increased risk of COVID-19, as well as an increased risk of experiencing severe effects from the condition. (healthline.com)
Feeling tired can stem from a number of causes, one of which may be vitamin D deficiency. (healthline.com)
Unlike more visible causes like stress, depression, and insomnia, vitamin D deficiency is often overlooked as a potential cause of fatigue. (healthline.com)
One study in 480 older adults linked vitamin D deficiency with fatigue symptoms ( 12 ). (healthline.com)
Vitamin D deficiency is a widespread problem in the U.S., and specific population groups are more likely to suffer from deficiency (e.g. (creighton.edu)
Deficiency or insufficiency in any of these vitamins can negatively affect immune function and can increase the susceptibility to infection. (creighton.edu)
But there seem to be gaps in understanding this paradox of vitamin D deficiency amid plenty of sunshine. (org.in)
ABSTRACT Vitamin A deficiency (VAD) can have a negative impact on pregnancy but there have been no studies in Al-Ain on the vitamin A status of pregnant women. (who.int)
Despite great collaborative efforts of many whose infants had died during the first year governmental and nongovernmental agen- of life as compared with mothers whose cies, vitamin A deficiency (VAD) is still one infants had survived [ 12 ]. (who.int)
The results revealed that vitamin A deficiency [ 1 ]. (who.int)
To assess the association between vitamin D deficiency and tuberculosis disease progression, we studied vitamin D levels in a cohort of tuberculosis patients and their contacts (N = 129) in Pakistan. (cdc.gov)
Deficiency of vitamin D (25-hydroxycholecalciferol) has long been implicated in activation of tuberculosis (TB) ( 1 ). (cdc.gov)
In the present study, we explored the role of vitamin D deficiency in TB disease progression within this cohort. (cdc.gov)
However, menadione (a synthetic, water-soluble vitamin K precursor) can cause toxicity (infants have developed hemolytic anemia, hyperbilirubinemia, jaundice, and kernicterus) and should not be used to treat vitamin K deficiency. (msdmanuals.com)
Vitamin D is a fat-soluble vitamin used to prevent or treat vitamin D deficiency. (medscape.com)
Shah BR, Finberg L. Single-day therapy for nutritional vitamin D-deficiency rickets: a preferred method. (medscape.com)
Vitamin D supplementation: guidelines and evidence for subclinical deficiency. (medscape.com)
Vitamin D deficiency has been associated with several adverse health outcomes, including abnormal bone mineralization, heart disease, and premature mortality. (medscape.com)
Conversion of circulating 25D to 1,25D occurs primarily in the kidneys and is upregulated during states of vitamin D deficiency. (medscape.com)
Vitamin K deficiency may affect any age group but is encountered most often in infancy. (medscape.com)
Infants with vitamin K deficiency-which may be caused by the limited transplacental transfer of vitamin K, the low level of vitamin K in breast milk, limited neonatal liver vitamin K storage, and low neonatal colonic bacterial colonization-are at risk for hemorrhagic disease of newborn. (medscape.com)
Because of its toxicity, menadione is no longer used for treatment of vitamin K deficiency. (medscape.com)
If vitamin K deficiency is suspected in a patient with unexpected or excessive bleeding, PT is the main laboratory test indicated. (medscape.com)
Cessation of bleeding and normalization of the PT after vitamin K administration is presumptive evidence of vitamin K deficiency. (medscape.com)
But as the researchers' interest in the vitamin have increased, more and more diseases are linked to a vitamin D deficiency. (lu.se)
Johan Malm is one of the researchers at Lund University who is studying the effects of vitamin D deficiency. (lu.se)
Many different diseases can be linked to a vitamin D deficiency. (lu.se)
Vitamin B12 deficiency: a factor that induces depression? (bvsalud.org)
The deficiency of vitamin B12 creates a case of hyperhomocysteinemia and decline of S-adenosylmethionine, which is a risk factor for depression without adequate treatment. (bvsalud.org)
This project had as an objective to verify the relation between depression and the deficiency of vitamin B12, through literary revision. (bvsalud.org)
Objective: This study aimed to survey articles, published from 2004 to 2014, about the impact of vitamin D deficiency on the prevalence of early childhood caries. (bvsalud.org)
and to address issues that relate vitamin D deficiency to dental caries in children. (bvsalud.org)
Final considerations: There is a clear association between vitamin D deficiency and early childhood caries. (bvsalud.org)

Intake recommendations for vitamin B12 and other nutrients are provided in the Dietary Reference Intakes (DRIs) developed by the Food and Nutrition Board (FNB) at the National Academies of Sciences, Engineering, and Medicine [ 1 ]. (nih.gov)
Vitamin D toxicity can occur from high intakes of supplements containing vitamin D, but not from dietary intake. (news-medical.net)
Long term intakes of vitamin D above the upper limit recommended causes symptoms of toxicity. (news-medical.net)
Institute of Medicine: "Dietary Reference Intakes for Calcium and vitamin D. (webmd.com)
Vitamin D is an essential nutrient, with recommended dietary intakes defined by expert authorities. (creighton.edu)

Vitamin A, also known as beta-carotene or retinol, is a very important vitamin. (healthy.net)
Several carotene pigments found in foods, mainly yellow and orange vegetables and fruits, can be converted to vitamin A in our body and thus are termed provitamin A. Beta-carotene is the most available and also the one that yields the highest amount of A. (healthy.net)
beta-carotene can also be converted to vitamin A in the liver. (healthy.net)
People with diabetes, low thyroid activity, and those who use a lot of polyunsaturated fatty acids (PUFA) without antioxidants such as vitamin E have lowered ability to convert beta-carotene to A. Assimilation of vitamin A and the carotenes is helped by the presence of bile salts and fatty acids in the intestine. (healthy.net)
The human body converts beta-carotene into vitamin A, and this strain produces around 20 times as much as previous varieties. (bbc.co.uk)
We often find vitamin A in the orange and yellow foods, noting the beta-carotene we commonly recognize. (dole.com)
These researchers looked at clinical trials involving the common antioxidant vitamins beta carotene, vitamin A, vitamin C (ascorbic acid), vitamin E, and selenium either singly or in combinations. (abc.net.au)
Vitamin E upped the risk by four per cent and beta carotene seven per cent. (abc.net.au)
Like many other plant-based nutrients, including Vitamin E and beta-carotene, Vitamin C is an antioxidant. (healthcastle.com)
Beta-carotene from vitamin supplements is one-half as potent as retinol. (nih.gov)
One mcg of beta-carotene from vitamin supplements is therefore equal to 0.5 mcg retinol (see the LactMed beta-carotene record). (nih.gov)
According to a review of studies that included almost half a million people, antioxidant supplements (including vitamin E, beta carotene, vitamin C and selenium ) did not prolong life or protect against disease. (livescience.com)

repair, and bone health, vitamins adequate consumption is important for the maintenance of several metabolic functions in the body, and inadequate intake of vitamins leads to nutritional deficiencies. (bartleby.com)
These major circulating forms reflect the cumulative effects of exposure to sunlight and dietary intake of vitamin D (the two ways people get vitamin D), and therefore, clinicians use them to determine vitamin D status. (cdc.gov)
If your vitamin D test score is low, below 100 nmol/L Canada or 40 ng/ml USA, take immediate action to increase your vitamin D intake. (prweb.com)
On their own, our findings do not alter current recommendations for vitamin K intake, but they do suggest that we need more research on whether some people, such as those with lung disease, could benefit from vitamin K supplementation," Jespersen said in a journal news release. (medicinenet.com)
As a fat-soluble vitamin, vitamin A can be stored in the body and used when there is decreased intake. (healthy.net)
The storage of vitamin A is decreased during times of stress or illness unless intake is increased. (healthy.net)
Both deficient and excess intake of a vitamin can potentially cause clinically significant illness, although excess intake of water-soluble vitamins is less likely to do so. (wikipedia.org)
Supplemental intake of Vitamin C at very large doses (1,500 mg daily) can interfere with copper metabolism. (healthcastle.com)
Following synthesis in the skin or dietary intake, both forms of vitamin D are transported to the liver, and are hydroxylated to form 25-hydroxyvitamin D3 and 25-hydroxyvitamin D2, respectively. (creighton.edu)
Your body now has to wait for the next intake of Vitamin C. You really do need to take it every day. (bellaonline.com)
Studies carried out in developed countries show that a full body exposure to UVB radiation that results in pinkness of skin (one erythemal dose) is equal to an oral intake of 250-625μg (10,000-25,000 IU) of 25-hydroxy vitamin D. Exposing one-quarter of skin, for instance just hands, arms and face, to one erythemal dose of UVB rays can form dietary equivalent vitamin D dose of about 1,000 IU. (org.in)
After adjusting for several known cancer risk factors, such as age, weight (BMI), physical activity levels, smoking, alcohol intake and dietary factors, the researchers found that a higher level of vitamin D was associated with a lower (around 20%) relative risk of overall cancer in both men and women. (eurekalert.org)

Vitamin B12 is a water-soluble vitamin that is naturally present in some foods, added to others, and available as a dietary supplement and a prescription medication. (nih.gov)
If vitamin B12 is added to fortified foods and dietary supplements, it is already in free form and therefore does not require the separation step. (nih.gov)
Cataracts [folic acid], and Dietary and supplemental vitamin B2, along with other nutrients is important for normal vision and prevention of cataracts (damage to the lens of the eye which can lead to cloudy vision). (healthyplace.com)
Dietary changes alone, without additional supplements, can often bring vitamin B levels back to normal. (healthyplace.com)
18 ] Milk vitamin A content increases as maternal dietary vitamin A increases. (nih.gov)
Tell your healthcare providers about any dietary supplements you're taking, such as herbs, vitamins, minerals, and natural or home remedies. (mskcc.org)
Guidelines from the Institute of Medicine increased the recommended dietary allowance (RDA) of vitamin D to 600 international units (IU) for everyone ages 1-70, and raised it to 800 IU for adults older than age 70 to optimize bone health. (webmd.com)
Office of Dietary Supplements: "Dietary Supplement Sheet: Vitamin D. (webmd.com)
At present, 25-hydroxyvitamin D3 is not available as a dietary supplement in the United States.If it were available, 25-hydroxyvitamin D3 could more rapidly and effectively optimize vitamin D status and support immune function. (creighton.edu)
Vitamin K1 (phylloquinone) is dietary vitamin K. Sources include green leafy vegetables (especially collards, spinach, and salad greens), soy beans, and vegetable oils. (msdmanuals.com)
Measurement of vitamin K is unusual because the level responds to dietary changes within 24 hours, but effects on the vitamin K-dependent proteins are delayed. (medscape.com)

Learn more about vitamin D and sunlight for your baby. (cdc.gov)
Some experts have suggested that a few minutes of sunlight directly on the skin of your face, arms, back, or legs (without sunscreen) every day can produce the body's requirement of vitamin D. However, the amount of vitamin D produced by sunlight exposure can vary greatly from person to person. (medlineplus.gov)
It's created in the skin, although 'the amount of sunlight needed to synthesize adequate amounts of vitamin D varies, depending upon the person's age, skin color, sun exposure and underlying medical problems,' says Shamim Shakibai, an internal medicine physician at Marina Del Rey Hospital in Marina del Rey, California. (yahoo.com)
Dr. John Cannell from the Vitamin D Council recommends sunlight, sunbed or D3 supplementation to increase your vitamin D blood levels. (prweb.com)
Our body only synthesizes vitamin D when large areas of skin are exposed to sunlight, Alexandre recalled. (eurekalert.org)
Vitamin D is a fat-soluble compound made in the skin through the action of sunlight, and is also found in foods such as oily fish. (newscientist.com)
Known as the sunshine vitamin, vitamin D is produced by the body in response to skin being exposed to sunlight. (webmd.com)
The pigment melanin reduces the skin's ability to make vitamin D in response to sunlight exposure. (webmd.com)
Vitamin D, which is essential for healthy bones as well as other functions, is made in the skin after exposure to sunlight but can also be obtained through the diet and through supplements. (sciencedaily.com)
It has also been suggested that obesity could result from an excessive adaptive winter response, and that the decline in vitamin D skin synthesis from less exposure to sunlight contributes to the tendency to put on weight during colder seasons. (sciencedaily.com)
Vitamin D is sometimes called the sunshine vitamin because your body makes it from cholesterol when your skin is exposed to sunlight ( 1 ). (healthline.com)
When sunlight falls on the skin, it forms an essential nutrient, vitamin D. For people in India, which has an average of 300 clear sunny days in a year, this sunshine vitamin should be available in abundance. (org.in)
Vitamin D is made by the skin in response to sunlight. (eurekalert.org)

Methylcobalamin and 5-deoxyadenosylcobalamin are the metabolically active forms of vitamin B12. (nih.gov)
Prolonged sun exposure also does not result in vitamin D toxicity because the previtamin D3 is degraded as the skin heats up, and also because of the formation of various other non-functional forms of vitamin D from the thermally activated compound. (news-medical.net)
The two forms of vitamin A come from different food sources. (healthy.net)
Supplementation to improve vitamin D status and support immunity is recommended by experts in nutrition and immunity.However, optimization of vitamin D status can take months with the currently available forms of vitamin D. (creighton.edu)
There are multiple forms of vitamin D. Vitamin D3 (also called cholecalciferol) can be obtained through the diet from a variety of sources, including fatty fish, egg yolks, and in fortified foods, such as milk. (creighton.edu)
Forms of vitamin K are common therapy for osteoporosis in Japan and other countries. (msdmanuals.com)
There are 3 forms of vitamin K. Vitamin K1 (phylloquinone) is the natural form found in green leafy vegetables, green tea, and oils such as soybean, cottonseed, canola, and olive oil. (medscape.com)

We traditionally recognize vitamin D as the key vitamin for regulation of bone metabolism and homeostasis, but I want you to think out of the box here. (medscape.com)
Thiamine is a water-soluble vitamin required for carbohydrate metabolism. (medscape.com)
Vitamin K plays a significant role in bone growth and metabolism. (healthline.com)
Vitamin D provides a hormone-like function, regulating mineral metabolism for bones and other organs. (wikipedia.org)
In recent years, emerging evidence has linked vitamin D not only to its known effects on calcium and bone metabolism, but also to many chronic illnesses involving neurocognitive decline. (nih.gov)
This study used genetic markers derived from an analysis of 21 adult cohort groups (up to 42,000 participants) to explore the link between body mass index (BMI) and genes associated with the synthesis and metabolism of vitamin D. Associations between vitamin D and BMI were further confirmed using data from another genetic consortium with over 123,000 participants. (sciencedaily.com)
As Vitamin D concentrations and metabolism can vary by ethnicity, it is important to find out whether similar effects would be seen in non-Caucasian populations. (eurekalert.org)
Objective Examine acute changes in vitamin D metabolism and bioavailability after vitamin D2 supplementation. (medscape.com)

Other nutrients that have been studied with regards to nutritional immunology include zinc, copper, selenium, iron, vitamins C, B6, folic acid, A and E and the essential (polyunsaturated) fatty acids. (bartleby.com)
Vitamin B9, also called folic acid or folate, is one of eight water-soluble B vitamins. (healthyplace.com)
Folic acid also works closely together with vitamin B12 to regulate the formation of red blood cells and to help iron function properly in the body. (healthyplace.com)
Even though this connection seems strong, it is not known whether folic acid or factors other than this vitamin that contributed to this substantial decline. (healthyplace.com)
Clinically, many naturopathic and other doctors recommend the use of vitamin B complex 50 mg per day with additional folic acid 800 to 1,000 mcg per day to try to prevent miscarriage (also known as spontaneous abortion). (healthyplace.com)

Do infants get enough vitamin D from breast milk? (cdc.gov)
Once a child has started eating solid foods, parents can make sure their child is getting enough vitamin D from foods or supplements. (cdc.gov)
If you don't have enough vitamin K, you may bleed too much. (medlineplus.gov)
How Can I Make Sure My Child is Getting Enough Vitamin D? (cdc.gov)
Vitamin D supplements are another way to help children get enough vitamin D every day. (cdc.gov)
It can be hard to get enough vitamin D from food sources alone. (medlineplus.gov)
People who do not live in sunny places may not make enough vitamin D within a limited time in the sun. (medlineplus.gov)
Are You Getting Enough Vitamin D? (yahoo.com)
VKDB is a condition that occurs when there's not enough vitamin K in the body to help form blood clots ( 8 ). (healthline.com)
Thus, getting enough vitamin K2 in your diet may help prevent calcium buildup and benefit heart health ( 26 , 27 ). (healthline.com)
It's necessary to explain to people that they risk losing muscle strength if they don't get enough vitamin D. They need to expose themselves to the sun, eat food rich in vitamin D or take a supplement, and do resistance training exercises to maintain muscle strength," he said. (eurekalert.org)
If you don't get enough Vitamin C, you come down with scurvy which is eventually fatal. (bellaonline.com)

Researchers analyzed the results from 9 prospective cohort studies which compared data on vitamin D status and mortality for 24,297 adults of varying ages. (prweb.com)
After adjusting for all the main confounders, the risk for all-cause mortality was 19% greater for those participants with the lowest vitamin D level compared to the highest. (prweb.com)
When the data was stratified by age, the study reported that the all-cause mortality risk for people with lower vitamin D levels was 12% greater for those under age 65 and 25% greater for those above 65 years of age. (prweb.com)
The authors reported, "As far as we are aware, this is the only systematic review and meta-analysis that has specifically investigated whether the apparent association between low vitamin D status and all-cause mortality is age-dependent. (prweb.com)
1. Rush L, McCartney G, Walsh D, MacKay D. Vitamin D and subsequent all-age and premature mortality: a systematic review. (prweb.com)
Vitamin A increased mortality risk by 16 per cent. (abc.net.au)
Maternal vitamin A supplementation during pregnancy and lactation has not reduced mortality or the risk of anemia in breastfed infants living in developing regions, but there may be health benefits related to improved antioxidant capacity and immune function. (nih.gov)
Other large reviews also have suggested that vitamin E supplements and other antioxidant pills are associated with increased mortality. (livescience.com)
Supplementation with vitamin D has been demonstrated to reduce the incidence of acute respiratory tract infections.In addition, data from around the world indicate that low vitamin D status correlates with increased incidence and severity of, and mortality from, COVID-19. (creighton.edu)
13 ]. The same authors reported that the easily prevented by sound nutrition, includ- maternal mortality rate among night- ing provision of vitamin A [ 3 ]. (who.int)
Dur- its precursors contributed effectively to re- ing pregnancy and lactation, vitamin A ducing mortality rates among pregnant plays a vital role in placental and fetal devel- women [ 14 ]. (who.int)
A separate study out of the United Kingdom found that higher serum vitamin D concentrations are nonlinearly associated with a lower risk for all-cause, cardiovascular disease, and cancer mortality. (medscape.com)

Vitamin K and potassium are both considered essential nutrients . (healthline.com)
The body cannot product potassium on its own and can only make small amounts of vitamin K. As a result, it's important to consume these nutrients through food. (healthline.com)
Additionally, it appears that other nutrients, including vitamin D , may influence the effectiveness of vitamin K supplements for heart health ( 17 , 28 ). (healthline.com)
The term vitamin does not include the three other groups of essential nutrients: minerals, essential fatty acids, and essential amino acids. (wikipedia.org)
Vitamin B9 works closely with vitamins B6 and B12 as well as the nutrients betaine and S-adenosylmethionine (SAMe) to control blood levels of the amino acid homocysteine. (healthyplace.com)
Are We Getting Enough Vitamins and Nutrients? (cdc.gov)

People who are deficient in vitamin D are at higher risk for osteoporosis. (cdc.gov)
People who are deficient in vitamin A are also deficient in a whole host of other vitamins and minerals. (bbc.co.uk)
Then in early 2012, a check-up revealed she was deficient in vitamin D. (org.in)

Breast milk alone does not provide infants with an adequate amount of vitamin D. Shortly after birth, most infants will need an additional source of vitamin D. (cdc.gov)
This disease is most common in breastfed infants who did not receive vitamin K prophylaxis at birth. (medscape.com)
Vitamin K toxicity is rare but is most common in formula-fed infants. (msdmanuals.com)
VItamin D supplementation in infants, children, and adolescents. (medscape.com)
Issues in establishing vitamin D recommendations for infants and children. (medscape.com)

The Centers for Disease Control and Prevention (CDC) improves the detection and diagnosis of bone diseases by ensuring that laboratory tests for vitamin D are accurate and reliable. (cdc.gov)

Vitamin E is a group of fat-soluble vitamins with antioxidant effects. (medicalnewstoday.com)
Many supporters of vitamin E oil argue that it is a potent antioxidant, but research on its benefits is mixed . (medicalnewstoday.com)
Vitamin E oil's potential benefits derive from two key features: its antioxidant properties, which could fight inflammation and slow the effects of free radicals, and its moisturizing properties. (medicalnewstoday.com)
Vitamin C is involved in the regeneration of Vitamin E, and these two vitamins appear to work together in their antioxidant effect. (healthcastle.com)
1 ] Vitamin A in milk has antioxidant properties. (nih.gov)
It's been nearly a century since researchers at the University of California, Berkeley discovered vitamin E, and since then, many studies have looked at the potential health benefits of this antioxidant. (livescience.com)
In addition, vitamin C is an antioxidant that helps guard against the harmful effects of environmental free radicals. (marykay.com)

How many of you talk to your patients about vitamin D as a supplement? (medscape.com)
Breast milk usually does not provide all the vitamin D a baby needs, so breastfed babies will need a supplement of 400 IU of vitamin D per day beginning shortly after birth. (cdc.gov)
As a result, some people may need to take a vitamin D supplement. (medlineplus.gov)
About half of all Australians at least occasionally take vitamins, minerals or some other supplement alone, or more commonly in multivitamin preparations. (abc.net.au)
Over the years, supplement makers and some researchers predicted that vitamin E would help prevent cancer, heart disease and Alzheimer's disease, as well as help maintain eyesight and keep skin glowing. (livescience.com)
Fueled by hope and hype, vitamin E supplement sales soared. (livescience.com)
Vitamin C is a necessary supplement when it comes to skin health, so it's no surprise that this serum works so well. (popsugar.com)
Vitamin/Mineral Supplement Public Use Tape contains data from these questions as well as socio-demographic and health items obtained about the sample person from the NHIS core questionnaire. (cdc.gov)

In East Asia, where polished white rice was the common staple food of the middle class, beriberi resulting from lack of vitamin B1 was endemic. (wikipedia.org)
Obesity can lead to a lack of vitamin D circulating in the body, a new study suggests. (sciencedaily.com)
Obesity can lead to a lack of vitamin D circulating in the body, according to a study led by the UCL Institute of Child Health (ICH). (sciencedaily.com)
Overall, the findings suggest that a higher BMI leads to lower levels of available vitamin D, while the effect of a lack of vitamin D on BMI appears to be very small. (sciencedaily.com)
For a long time we have been aware of the fact that a lack of vitamin D can lead to osteoporosis in adults and rickets in children - diseases that are also most common in the north. (lu.se)

I've also used supplementation in patients with diverticulitis , which we know to occur more frequently in patients with lower vitamin D. When you get into some of the anti-inflammatory effects of vitamin D on proliferation, differentiation, barrier function, and immune response, it makes sense to start looking at this in inflammatory/infectious disease as well. (medscape.com)
However, the effects of vitamin E on psoriasis were not as good as most readily available treatments. (medicalnewstoday.com)
Learn about the usage, dosage, side-effects of Vitamin B2 (Riboflavin). (healthyplace.com)

Given the importance of vitamin D to the body, a growing number of studies highlight what an insufficient amount can mean to one's health. (yahoo.com)
Researchers in Brazil and the UK analyzed data for more than 3,000 people aged 50 or more to prove the importance of vitamin D to muscles. (eurekalert.org)
But increasingly, research is revealing the importance of vitamin D in protecting against a host of health problems. (webmd.com)

Pantothenic acid (vitamin B5) belongs to the B-vitamin complex. (kcl.ac.uk)
Overview of Vitamins Vitamins may be Fat soluble (vitamins A, D, E, and K) Water soluble (B vitamins and vitamin C) The B vitamins include biotin, folate, niacin, pantothenic acid, riboflavin (B2), thiamin (B1). (msdmanuals.com)

However, four of the more common vitamin B deficiencies-thiamine (B1), cobalamin (B12), niacin (B3), and folate (B9)-are reviewed. (medscape.com)
Niacin is a water-soluble vitamin and an essential component of nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide phosphate (NADP), coenzymes required for oxidation-reduction reactions. (medscape.com)
In fact, people with plenty of protein and vitamins A, B1, B2, and B3 (niacin) in their diet are less likely to develop cataracts. (healthyplace.com)
Niacin, or vitamin B3, is required in many cellular metabolic processes. (kcl.ac.uk)

Hypercalcemia due to vitamin D intoxication must be treated on an emergency basis once the serum calcium is determined to be above 14 mg/dL. (news-medical.net)
Vitamin D helps the body absorb calcium . (medlineplus.gov)
If you do not consume enough calcium in your diet, or if your body does not absorb enough calcium due to low vitamin D, bone production and bone tissues may suffer. (medlineplus.gov)
Follow a diet that provides the proper amount of calcium and vitamin D. Your provider may recommend higher doses of vitamin D if you have risk factors for osteoporosis or a low level of this vitamin. (medlineplus.gov)
Too much vitamin D can make the intestines absorb too much calcium. (medlineplus.gov)
health, vitamin D helps regulate the use of calcium and phosphorus levels. (bartleby.com)
Calcium and phosphorus attach to newly formed bone matrix made of osteocalcin, which is produced with the aid of vitamin D and vitamin K. The formation of hydroxyappitie, only possible with vitamin D, gives strength and structured to bones. (bartleby.com)
The biologically active form of vitamin D (1,25-dihydroxyvitamin D) is a hormone whose main function is to keep serum calcium and phosphorus concentrations in blood within normal ranges. (cdc.gov)
Vitamin K may also help inhibit the accumulation of calcium in the blood vessels, which is a notable predictor of heart disease. (healthline.com)
Vitamin D plays an important role in the regulation of calcium and phosphorus absorption by the organism. (eurekalert.org)
Vitamin D is essential for strong bones because it helps the body use calcium from the diet. (webmd.com)
Moreover, vitamin D is not the only nutrient required for adequate calcium levels, which ensure bone health. (org.in)
The actions of vitamin K-dependent proteins require calcium. (msdmanuals.com)

Folate is a water-soluble essential vitamin found in green leafy vegetables and the liver. (medscape.com)
Fat-soluble vitamins are stored in the body's fatty tissue and liver. (medlineplus.gov)
Preformed vitamin A, as is found in fish liver oil, was the first vitamin officially named and was thereby given the letter A to identify it. (healthy.net)
Preformed A (retinol) is the main animal-source vitamin A. It is found in highest concentrations in all kinds of liver and fish liver oil, which is a common source for supplements. (healthy.net)
It's known for instance that in large amounts, over longer periods of time, fat-soluble vitamins including vitamins A, D, E and K can accumulate in the liver and cause toxicity. (abc.net.au)
In addition, B complex vitamins play an important role in maintaining muscle tone along the lining of the digestive tract and promoting the health of the nervous system, skin, hair, eyes, mouth, and liver. (healthyplace.com)
Research has found that vitamin E supplements there is some evidence that vitamin E may reduce liver damage caused by inflammation from aggressive nonalcoholic fatty liver disease (NAFLD), a disease associated with obesity. (livescience.com)
When skin is exposed to the ultraviolet (B) rays, provitamin D present in the skin gets converted into previtamin D. It is isomerised by body heat to the precursor of vitamin D3, which is then transported to the liver through blood. (org.in)
High levels of vitamin D may be linked to a lower risk of developing cancer, including liver cancer, concludes a large study of Japanese adults published by The BMJ today. (eurekalert.org)
Higher vitamin D levels were also associated with a lower (30-50%) relative risk of liver cancer, and the association was more evident in men than in women. (eurekalert.org)

The National Osteoporosis Foundation (NOF) recommends a higher dose for people age 50 and older, 800 to 1,000 IU of vitamin D daily. (medlineplus.gov)
Most concerning is an overdose of vitamin A through supplementation as it may lead to osteoporosis and unwanted side effects within diabetes self-management, furthering our evidence that supplements are unnecessary and potentially harmful . (dole.com)
However, because we knew there are many worldwide cases of people with osteoporosis who take vitamin supplements, we needed to try to measure the effectiveness of vitamin D supplementation," said Maicon Luís Bicigo Delinocente , first author of the article. (eurekalert.org)

Concentrations vary between manufacturers, and some users simply pop open vitamin E capsules and put the contents on their skin. (medicalnewstoday.com)
Researchers found that a 10 per cent rise in BMI was linked to a four per cent drop in concentrations of vitamin D in the body. (sciencedaily.com)
However, vitamin D is stored in fatty tissue and thus, the most likely explanation for the association found in the ICH-led study is that the larger storage capacity for vitamin D in obese people leads to lower circulating concentrations of vitamin D. (sciencedaily.com)
Further studies are needed to clarify the optimal concentrations [of vitamin D] for cancer prevention. (eurekalert.org)
Context Changes in vitamin D binding protein (DBP) concentrations and catabolism of 25-hydroxyvitamin D to 24,25-dihydroxyvitamin D (24,25D) after vitamin D2 supplementation may alter concentrations and bioavailability of circulating 25-hydroxyvitamin D (25D). (medscape.com)
Main outcome measures included concentrations of DBP, vitamin D metabolites, and bioavailable 25-hydroxyvitamin D (25D) in pre- and posttreatment serum samples. (medscape.com)

Vitamin D is needed to support healthy bone development and to prevent rickets, a condition that causes weak or deformed bones. (cdc.gov)
Vitamin D helps your child build strong bones and prevent rickets. (cdc.gov)

The Vitamin Bridge donates prenatal vitamins and nutrition information to these organizations as a means to reach disadvantaged, expectant mothers with life-improving nutrition at the earliest point in pregnancy. (guidestar.org)
The Vitamin Bridge is filling gaps in prenatal nutrition and is positively impacting maternal health and fetal development. (guidestar.org)
Distribution of prenatal vitamins and nutrition education materials to underserved women. (guidestar.org)
The Vitamin Bridge aspires to: (1) fill nutrition gaps through providing prenatal vitamins to at-risk women at the earliest stage of their pregnancy, (2) promote women's health during pregnancy through providing healthy pregnancy habits information, and (3) operate as a sustainable, best-in-class nonprofit which grows at a responsible pace. (guidestar.org)
The Vitamin Bridge's primary goal is to fill nutrition gaps by providing prenatal vitamins to disadvantaged women at the earliest point in their pregnancy. (guidestar.org)
By supplying these organizations with prenatal vitamins, their clients are able to access this supplemental nutrition as early as their initial appointment. (guidestar.org)
Vitamin is a type of nutrient or nutrition that is a must for the human body to survive, grow and for the development of multicellular organism. (bartleby.com)
Much of the growing interest in vitamin D is powered by new data being extracted from the National Health and Nutrition Examination Survey (NHANES). (nih.gov)
The number you see on the Nutrition Facts label is a percentage calculated by dividing the amount of Vitamin C in one serving of the food by the DV. (healthcastle.com)
Using an example from the above chart, ½ cup of mashed papaya, which contains 70 mg of Vitamin C, would have 117% of the DV for Vitamin C. The FDA requires that the DV for Vitamin C be listed on the Nutrition Facts label. (healthcastle.com)
Canadian labeling laws also require that the DV for Vitamin C be listed on the Nutrition Facts label. (healthcastle.com)

Vitamin K helps your body by making proteins for healthy bones and tissues. (medlineplus.gov)
Thirty-seven different tissues in the human body utilize vitamin D and need it for adequate functioning. (yahoo.com)
After tissue injury or surgery, vitamin A is needed for repair of the tissues and to help protect the tissues from infection. (healthy.net)
In people with a condition called hemochromatosis, which causes the body to store too much iron, high doses of Vitamin C could worsen iron overload and lead to the damage of body tissues. (healthcastle.com)
The vitamin K-dependent proteins, osteocalcin and matrix gamma-carboxy-glutamyl (Gla) protein, may have important roles in bone and other tissues. (msdmanuals.com)

Vitamin B2, commonly called riboflavin, is one of eight water-soluble B vitamins. (healthyplace.com)

Vitamin C also assists in the formation of collagen, a protein which is important for the health of blood vessels and gums, development of bones and teeth, and wound healing. (healthcastle.com)
Vitamin D has a pivotal role in the mineralisation of bones and teeth. (kcl.ac.uk)
Initially, most of the known benefits of vitamin D were restricted to those to the bones. (org.in)

Fatty fish (such as tuna, salmon, and mackerel) are among the best sources of vitamin D. (medlineplus.gov)
Regularly consuming foods that are rich sources of vitamin K and potassium can contribute to an overall healthy diet . (healthline.com)
Egg yolks and milk products, such as whole milk, cream, and butter, are also good sources of vitamin A. (healthy.net)
Vegetables and fruit are the best sources of Vitamin C. (healthcastle.com)

There are numerous possible benefits of vitamin E oil for skin, especially in people with dry or itchy skin, psoriasis, and eczema. (medicalnewstoday.com)
There is a need for well-designed randomized trials to assess the benefits of vitamin D and lifestyle interventions in persons with mild cognitive impairment and dementia. (nih.gov)
While the benefits of vitamin D on bone diseases are well known, there is growing evidence that Vitamin D may benefit other chronic diseases, including some cancers. (eurekalert.org)

Vitamin B12 status is typically assessed by measurements of serum or plasma vitamin B12 levels. (nih.gov)
perhaps measure the patient's vitamin D levels, and monitor and target it in patients-particularly those at risk. (medscape.com)
However, up to 50000 IU/month has not been associated with either high serum vitamin D levels or any laboratory findings of toxicity. (news-medical.net)
The best measure of your vitamin D status is to look at blood levels of a form known as 25-hydroxyvitamin D (25(OH)D). Blood levels are described either as nanograms per milliliter (ng/mL) or nanomoles per liter (nmol/L), where 0.4 ng/mL = 1 nmol/L. (medlineplus.gov)
Our bodies convert both compounds to 1,25-dihydroxyvitamin D. Levels of 25-hydroxyergocalciferol and calcifediol in blood describe a person's vitamin D status. (cdc.gov)
In a study published Wednesday in BMJ, researchers tracked the blood samples of more than 95,000 participants for nearly 40 years and found that genes associated with permanent low levels of vitamin D raised the risk of early death. (yahoo.com)
In October, researchers revealed that in a study of patients who suffered from sudden cardiac arrest, 65 percent of those with low vitamin D levels suffered poor neurological outcomes six months after hospital discharge, compared with 23 percent of patients with healthy vitamin D levels. (yahoo.com)
In addition, 29 percent of patients with low levels died six months after their cardiac attack, whereas all the patients with healthy vitamin D levels survived. (yahoo.com)
In an online issue of Neurology published in August, a study examined the vitamin D levels of 1,658 people over age 65 who were dementia-free. (yahoo.com)
Woodstock, ON (PRWEB) September 18, 2013 -- The Vitamin D Society wants to make the public aware of a recent meta-analysis study published in BioMed Central Public Health, reporting that men and women with higher vitamin D levels have a much lower risk of dying prematurely from all causes(1). (prweb.com)
This study confirms that people over age 65 with low vitamin D levels have a 25% higher risk of dying prematurely from all causes," said Perry Holman, Executive Director for the Vitamin D Society . (prweb.com)
There is an immediate need for public health programs to promote and communicate the importance of maintaining optimal vitamin D levels of between 100-150 nmol/L to seniors. (prweb.com)
The Vitamin D Society recommends people achieve and maintain optimal 25(OH)D blood levels between 100 - 150 nmol/L (Can) or 40-60 ng/ml (USA). (prweb.com)
A new, large study -- published Aug. 10 in ERJ Open Research -- suggests that people who have low levels of this vitamin also have less healthy lungs . (medicinenet.com)
The blood tests included a marker of low levels of vitamin K in the body. (medicinenet.com)
People with markers of low vitamin K levels had lower FEV1 and lower FVC on average. (medicinenet.com)
Those with lower levels of vitamin K were also more likely to say they had COPD , asthma or wheezing. (medicinenet.com)
This study suggests that people with low levels of vitamin K in their blood may have poorer lung function. (medicinenet.com)
After a mean of one-year of follow-up, those who had normalized their vitamin-D levels were significantly less likely to have died, developed heart failure, or developed coronary artery disease. (medscape.com)
A composite end point, looking at all outcomes combined, showed a highly statistically significant reduction among those with normalized vitamin-D levels. (medscape.com)
For one, the trial, he says, is not measuring baseline levels or checking whether patients actually reach the optimal vitamin-D range in the intervention arm. (medscape.com)
As for whether vitamin D can be too high, Muhlestein noted that there are problems with vitamin-D toxicities typically associated with hypercalcemia, but these tend to arise in people with levels higher than 100 ng/mL, and many people believe the level must be well over 150 ng/mL. (medscape.com)
Beta cells, which store and release the hormone insulin to help regulate blood glucose levels, have a large cell surface receptor for vitamin A. (dole.com)
Finally, the researchers found that high levels of nuclear CTSL and low levels of 53BP1 and nuclear vitamin D receptors are markers that identify certain triple-negative breast cancers. (vitamindcouncil.org)
2 , 15 , 16 ] Vitamin A partitions into milk fat and milk retinol levels are positively correlated with milk fat. (nih.gov)
People with a body mass index of 30 or greater often have low blood levels of vitamin D. (webmd.com)
Although there is no consensus on vitamin D levels required for optimal health -- and it likely differs depending on age and health conditions -- a concentration of less than 20 nanograms per milliliter is generally considered inadequate, requiring treatment. (webmd.com)
An estimated 1 billion people around the globe have low blood levels of the vitamin ( 4 ). (healthline.com)
If you often become sick, especially with colds or the flu, low vitamin D levels may be a contributing factor. (healthline.com)
Plus, a study in 39 children associated low vitamin D levels with poor sleep quality, shorter sleep duration, and delayed bedtimes ( 13 ). (healthline.com)
One observational study in female nurses also found a strong connection between low vitamin D levels and self-reported fatigue. (healthline.com)
She plans to resume jogging, swimming and dancing after she gets her vitamin D levels tested again in two months. (org.in)
At the start of the study, participants provided detailed information on their medical history, diet and lifestyle, and blood samples were taken to measure vitamin D levels. (eurekalert.org)
Vitamin D levels varied depending on the time of year the sample was taken, tending to be higher during the summer and autumn months than in the winter or spring. (eurekalert.org)
After accounting for this seasonal variation, samples were split into four groups, ranging from the lowest to highest levels of vitamin D. (eurekalert.org)
No association was found for lung or prostate cancer, and the authors note that none of the cancers examined showed an increased risk associated with higher vitamin D levels. (eurekalert.org)
Low vitamin D levels were associated with a 5-fold increased risk for progression to tuberculosis. (cdc.gov)
Serum levels of vitamin D in TB patients are lower than in healthy controls ( 2 , 3 ). (cdc.gov)
Paradoxically, prolonged treatment of TB also causes a decline in serum vitamin D levels ( 2 ). (cdc.gov)
For the present study, 129 de-identified, plasma samples preserved at -70°C from the baseline visit were shipped to Stanford University (Stanford, CA, USA) for analysis of vitamin D levels. (cdc.gov)
Levels of vitamin D in test samples were derived by fitting a 2-parameter logistic curve to 6 standard levels and expressed as ng/mL (1 nmol/L × 0.4 = 1 ng/mL). (cdc.gov)
Vitamin D levels in the cohort were classified in population-based tertiles (low, middle, high). (cdc.gov)
Levels of vitamin D in plasma in the Karachi, Pakistan, tuberculosis (TB) household cohort ( 7 ) by TB status at baseline (disease-free, index TB case-patient, coprevalent TB case-patient, and past. (cdc.gov)
Results of a study published online in the FEBS Journal showed that low plasma vitamin D levels are an independent risk factor for COVID-19 infection and hospitalization (see Infographic below). (medscape.com)
The study also linked low plasma vitamin D levels to an increased likelihood of hospitalization for COVID-19 infection. (medscape.com)
Researchers say that these findings should prompt physicians to regularly monitor patients' vitamin D levels, in order to keep them in the optimal range for overall health and to potentially aid in an immune response to COVID-19. (medscape.com)
[ 16 ] It is unknown, however, whether and to what extent vitamin D supplementation affects DBP levels following routine supplementation. (medscape.com)
The reference range of vitamin K is 0.2-3.2 ng/mL, but impaired blood clotting has been associated with levels below 0.5 ng/mL by one source. (medscape.com)
Our vitamin D levels vary considerably throughout the year - they are twice as high after the summer compared to after the winter in Sweden", says Klas Sjöberg. (lu.se)
According to Johan Malm, the relationship between vitamin D levels in the blood and the risk of developing prostate cancer seems to be complex, and the researchers are now studying whether genetic factors influence the risk of developing the disease. (lu.se)
LUND RESEARCHERS HAVE ALSO SEEN A CONNECTION between high levels of vitamin D in the blood and a reduced risk of diabetes, blood clots and fractures, among others. (lu.se)
There is still uncertainty whether in fact vitamin D levels are critical or if spending a lot of time outside exposed to light generates a positive effect. (lu.se)

Because vitamin B12 contains the mineral cobalt, compounds with vitamin B12 activity are collectively called "cobalamins" [ 1 ]. (nih.gov)
Unlike vitamin K, potassium is not a vitamin - it's a mineral. (healthline.com)
The body needs the mineral zinc to help release stores of vitamin A for use. (healthy.net)
The American Society for Bone and Mineral Research, the Endocrine Society, and the American Association of Clinical Endocrinologists, among others, issued "Joint Guidance on Vitamin D in the Era of COVID-19. (medscape.com)
In 1986, the NHIS included questions about the use of vitamin and mineral supplements in the diets of American adults and young children. (cdc.gov)
Data from the 1986 Vitamin-Mineral NHIS Questionnaire have been organized into one file. (cdc.gov)
However, the contents of each record that comprises the file differs depending on a) whether the sample person reported using any vitamin and/or mineral products during the 2 week period prior to the interview, and b) the number of individual products taken. (cdc.gov)
Every sample person may have from one to twelve Vitamin-Mineral records. (cdc.gov)
There is at least one Vitamin-Mineral record for every sample child and adult that was interviewed about their use of vitamin and mineral products. (cdc.gov)

In fact, a few studies suggest that high doses of vitamin E might actually be harmful. (livescience.com)
In 2008, the Physicians' Health Study II looked at more than 14,000 male doctors taking high doses of vitamin C or vitamin E for eight years. (livescience.com)
While experiments in rats have suggested that large doses of vitamin D2 can boost the amount of energy they burn, trials testing the effect of vitamin D supplements on weight loss in obese or overweight people have not shown any consistent findings. (sciencedaily.com)

The last two are not invariable findings in vitamin D toxicity, though they are common. (news-medical.net)
Their findings were that oral iron supplements alone were equivalent to oral iron supplements plus vitamin C in improving hemoglobin recovery and iron absorption. (medscape.com)
As you'd expect, the vitamin industry has denounced the findings, arguing the review is flawed, without being too specific about why. (abc.net.au)
Most vitamin studies are funded by vitamin manufacturers who tend not to publish if there are adverse findings the researchers didn't include any unpublished studies in their review. (abc.net.au)
The researchers say their findings support the theory that vitamin D might help protect against some cancers. (eurekalert.org)
The authors say their findings support the theory that vitamin D may protect against the risk of cancer, but that there may be a ceiling effect, which may suggest that there are no additional benefits beyond a certain level of vitamin D. (eurekalert.org)
New findings about the role of vitamin D in various conditions, along with recent guidance from medical societies about vitamin D in the era of COVID-19, resulted in this week's top trending clinical topic. (medscape.com)
In light of these findings, we advocate for the supplementation of methyl group-donating vitamins, notably B6 and B12, in patients undergoing a high-dose L-dopa/DDI regimen, particularly those treated with L-dopa/carbidopa intestinal gel (LCIG) infusion. (lu.se)

Vitamin K1 - also known as phylloquinone - is the type usually found in leafy green vegetables. (healthline.com)
Vitamin K1 (phylloquinone) is not toxic when consumed orally, even in large amounts. (msdmanuals.com)

Like its close relative vitamin B1 (thiamine), riboflavin plays a crucial role in certain metabolic reactions, particularly the conversion of carbohydrates into sugar, which is "burned" to produce energy. (healthyplace.com)

Vitamin A (retinol) and provitamin A carotenoids are normal components of human milk. (nih.gov)

Most nutritional disorders with deleterious effects on the central and peripheral nervous system are secondary to vitamin deficiencies, particularly those of the B group. (medscape.com)
A detailed discussion of all vitamin B deficiencies is beyond the scope of this article. (medscape.com)
Deficiencies of vitamin A are still fairly common worldwide and cause many difficulties. (healthy.net)
This was followed in the 1950s by the mass production and marketing of vitamin supplements, including multivitamins, to prevent vitamin deficiencies in the general population. (wikipedia.org)
Governments have mandated the addition of some vitamins to staple foods such as flour or milk, referred to as food fortification, to prevent deficiencies. (wikipedia.org)

Vitamins have diverse biochemical functions. (wikipedia.org)

Vitamin B2 aka Riboflavin helps migraine headaches. (healthyplace.com)

The Vitamin Bridge promotes healthy pregnancies by improving prenatal vitamin access for under-resourced moms-to-be. (guidestar.org)
Early prenatal care, including the consumption of prenatal vitamins, is standard for a healthy pregnancy. (guidestar.org)
Our results suggest that vitamin K could play a part in keeping our lungs healthy," said researcher Dr. Torkil Jespersen of Copenhagen University Hospital and the University of Copenhagen in Denmark. (medicinenet.com)
This vitamin is involved in laying down new bone during growth and promoting healthy teeth. (healthy.net)
The best way to get a healthy dose of vitamin A is through fruits and vegetables. (dole.com)
Carrots, mango, sweet potato, and butternut squash certainly come to mind, but do not discount kale, broccoli or spinach as they also pack a healthy punch of vitamin A as well! (dole.com)
Are Vitamin E Supplements Healthy or Harmful? (livescience.com)
Healthy men taking vitamin E actually had a higher incidence of prostate cancer than other men. (livescience.com)
Some feel that vitamin C helps to keep your eyes healthy and can prevent the formation of cataracts. (bellaonline.com)
The physiological role of vitamin A in er than that of healthy women [ 14 ]. (who.int)
Vitamin D in the healthy European paediatric population. (medscape.com)

Bacteria in your intestines also produce small amounts of another type of vitamin K. (medlineplus.gov)
In addition, people who have darker skin need more sun exposure to produce adequate amounts of vitamin D, especially during the winter months. (yahoo.com)
Previous studies have shown there's a risk to health only when a person consumes large amounts of vitamin. (abc.net.au)

The major source of vitamin D is exposure to the sun, which is why it earned the nickname 'the sunshine vitamin. (yahoo.com)

According to a study by Dr. Dan Engle published in 2009, compressed pill form of vitamins can have a poor absorption rate. (bartleby.com)
Does Optimal Iron Absorption Include Vitamin C? (medscape.com)
Vitamin C is often recommended to be taken with iron to promote absorption. (medscape.com)
Also, adding vitamin C does not appear to improve absorption of iron supplements. (medscape.com)
In addition, Vitamin C improves the absorption of iron from plant-based foods and helps the immune system work properly to protect the body from disease. (healthcastle.com)
Vitamin C (from food sources and/or supplements) increases the absorption of iron when taken at the same time. (healthcastle.com)

Vitamin D supplementation is not needed. (cdc.gov)
However, the research on these benefits is varied, and vitamin E supplementation is not right for everyone. (medicalnewstoday.com)

Patients undergoing a long-term L-dopa/dopa-decarboxylase inhibitor (DDI) regimen, especially without a concurrent catechol-O-methyl transferase (COMT) inhibitor or methyl group-donating vitamin supplementation, such as vitamins B6 and B12, exhibit an elevation in Hcy and a decline in vitamin B metabolites. (lu.se)

Results S1 reported on 16 studies concerning vitamin E and vitamin E components: two case-control, six prospective and four intervention studies found no effect. (bartleby.com)
There are total 13 types of vitamin found and recognized right now, all the function and benefit are essential for human body to develop if consume in the right way. (bartleby.com)
Vitamin also is an organic and essential substance that can found in food stuffs, therefore the smart choice of selecting food is best to base on the nutrient that have in the food itself. (bartleby.com)
VITAMINS Introduction Vitamins are organic food substances found only in living things, i.e. plants and animals. (bartleby.com)
Vitamin E is found in many moisturizers, and the oil may be used as a moisturizer to prevent or treat dry, flaking skin. (medicalnewstoday.com)
A 2013 study found that mice given supplements containing vitamin E were less likely to develop skin cancer , even when exposed to large quantities of ultraviolet light. (medicalnewstoday.com)
However, studies on humans have not found any skin cancer prevention benefits associated with vitamin E. (medicalnewstoday.com)
One study found that oral vitamin E supplements could produce significant improvements in eczema symptoms. (medicalnewstoday.com)
It may not get the publicity of some better-known vitamins like D, but vitamin K -- found in leafy green vegetables -- may boost lung health. (medicinenet.com)
In addition to leafy greens, vitamin K is found in vegetable oils and cereal grains. (medicinenet.com)
Researchers found that when the vitamin A surface on the beta cells was blocked, there was a 30% deterioration of insulin secretion. (dole.com)
Amongst the rest, the better quality studies, they found there was a significantly increased risk of death in people taking some vitamins - alone or in combinations. (abc.net.au)
Early studies that found a benefit, mostly for heart disease, were observational and not always well designed: Researchers asked people if they took vitamin E supplements and then looked at their health. (livescience.com)
This study was followed by an analysis of many studies in 2010 that found vitamin E supplements increase the risk of hemorrhagic strokes by 22 percent. (livescience.com)
Earlier research had found no benefit or harm from vitamin E. This large study of 35,533 men over a period of three years came up with a surprising result. (livescience.com)
The association between obesity and vitamin D status found here was consistent between genders, being apparent both in men and in women, and in younger and older age groups. (sciencedaily.com)
A number of studies have found that taking up to 4,000 IU of vitamin D daily may reduce the risk of respiratory tract infections ( 9 , 10 , 11 ). (healthline.com)
Vitamin D2 (also called ergocalciferol) is found primarily in mushrooms, plants, and yeast [3]. (creighton.edu)
25-hydroxyvitamin D is the predominant circulating form of vitamin D found in the bloodstream, and is the form measured by medical professionals to determine a person's vitamin D status. (creighton.edu)
Encouragingly, the study found that vitamin D use was linked to a 65% decreased odds of developing ICI colitis. (medscape.com)

Some research suggests that vitamin E supplements may promote wound healing. (medicalnewstoday.com)
Some research information suggests that as many as 33% of those with an eating disorder could be deficient in vitamins B2 and B6. (healthyplace.com)
Research suggests that vitamin D could play a role in the prevention and treatment of a number of different conditions, including type1 and type 2 diabetes, hypertension, glucose intolerance, and multiple sclerosis . (webmd.com)
In addition, current literature suggests that vitamin D supplementation may reduce the risk of developing caries lesions. (bvsalud.org)

What is Ascorbic Acid (Vitamin C)? (iherb.com)
Vitamin C, also known as ascorbic acid, is a water-soluble vitamin, meaning that your body doesn't store it. (healthcastle.com)

Infant formulas contain supplemental vitamin K. After the neonatal period, bacteria in the gastrointestinal tract synthesize vitamin K, which is absorbed and used by the body. (msdmanuals.com)

This is incredibly important because vitamin D has a profound effect on the immune system and the intestinal barrier function. (medscape.com)
Vitamin D provides antioxidative mechanisms and regulates the immune system by reducing inflammatory cytokines. (yahoo.com)
Vitamin E supplements may prevent coronary heart disease , support immune function, prevent inflammation , promote eye health, and lower the risk of cancer. (medicalnewstoday.com)
Zinc and vitamin C contribute to the normal function of the immune system and the protection of cells from oxidative stress. (waitrose.com)
This vitamin has recently garnered a lot of attention for its role in immune health, specifically regarding COVID-19. (healthline.com)
One of the most important roles of vitamin D is supporting immune health, which helps you ward off viruses and bacteria that cause illness. (healthline.com)
Vitamin D is well-understood to support the immune system, including the defense against viral infections. (creighton.edu)
Vitamin D is an essential, fat soluble vitamin that historically has been associated with bone health, but it also plays fundamental roles in supporting the immune system. (creighton.edu)
A wide variety of immune cells have vitamin D receptors that, once engaged, profoundly alter cellular function. (creighton.edu)
Several studies have suggested that vitamin D is a potent immunomodulator of innate immune responses ( 4 , 5 ) by acting as a cofactor for induction of antimycobacterial activity ( 6 ). (cdc.gov)
Research published in the journal Cancer showed that taking vitamin D before starting immune checkpoint inhibitor (ICI) therapy decreased the risk for treatment-related colitis. (medscape.com)

Researchers believe vitamin K2 may help inhibit this buildup ( 26 , 27 ). (healthline.com)
However, researchers need to do more studies to fully understand the relationship between vitamin K and heart health. (healthline.com)
Now the biological pathway behind the growth of colon cancer has been discovered by researchers who have been able block it with vitamin A. (sciencedaily.com)
The researchers were able to reactivate it using vitamin A, thus eliminating the cancer cells and preventing metastasis. (sciencedaily.com)
Some vitamin supplements can increase your risk of death, say Danish researchers. (abc.net.au)
But that's about to be turned on its head after a sophisticated analysis of vitamin studies done by Danish researchers and published in the latest Journal of the American Medical Association . (abc.net.au)
The researchers were looking for any evidence of an increase in death from any cause in those taking vitamins. (abc.net.au)
Researchers are currently studying the effectiveness of vitamin D alone or in combination with different treatments in mice with breast cancer. (vitamindcouncil.org)
By extension, vitamin D affects between 200 and 1000 enzyme systems, but researchers are still not sure of how it works exactly. (lu.se)

There are different types of vitamin K. Most people get vitamin K from plants such as green vegetables, and dark berries. (medlineplus.gov)
Most people meet at least some of their vitamin D needs this way. (medlineplus.gov)
Some people believe that vitamins can replace food, but that is incorrect. (bartleby.com)
Vitamin E oil might be a good option for people who want to avoid prescription remedies and who have mild psoriasis. (medicalnewstoday.com)
On the periodic table, the chemical symbol for potassium is the letter K. Thus, people sometimes confuse potassium with vitamin K. (healthline.com)
The Vitamin D Society recommend that people have their 25(OH)D level tested either through their family doctor or by purchasing a home test kit through health suppliers such as GrassrootsHealth.net . (prweb.com)
The only way I know of that people can get vitamin D that high is by overdosing on prescription vitamin D, which is supposed to be taken once a week. (medscape.com)
They looked only at well-designed studies ones that compared groups of people taking vitamins, single or in combinations with other vitamins and compared them to similar groups taking a placebo or taking nothing. (abc.net.au)
Besides which, they argue, some people in the studies were already ill, so why blame the vitamins? (abc.net.au)
In fact the analysis showed that vitamins raised the death risk in people already ill). (abc.net.au)
Although it is unclear which micronutrients are most beneficial for people with burns, many studies suggest that a multivitamin including the B complex vitamins may aid in the recovery process. (healthyplace.com)
At least 20% of people with anorexia admitted to a hospital for treatment are deficient in vitamins B2 and B6 (pyridoxine). (healthyplace.com)
People who smoke and those who are exposed to secondhand smoke need 35 mg more Vitamin C per day than nonsmokers. (healthcastle.com)
People who get little or no Vitamin C for many weeks can develop scurvy. (healthcastle.com)
Absolutely, $100 billion a year, it's a staggering amount, even more so…I was surprised to learn that there are a billion people who are taking one of these vitamins or supplements regularly. (abc.net.au)
From enriched coffee and chewing gum to oral sprays, there are tons of different ways for people to get their daily dose of vitamins and Nutrinovate sets itself apart by offering a convenient vitamin film that dissolves on the inside of the mouth. (trendhunter.com)
TimeWise Vitamin C Activating Squares ® won People en Español ® magazine's beauty award under "New Textures" category. (marykay.com)
A recent study of over 190,000 people in the United States confirms that low vitamin D status strongly correlates with increased rates of infection with SARS-CoV-2, the virus that causes COVID-19.This finding was consistent regardless of age, gender, race/ethnicity, or latitude. (creighton.edu)
However, reports show as many as 80 per cent people in urban India and 70 per cent in rural India are deficient in the vitamin. (org.in)

That is why it is often called the "sunshine" vitamin. (medlineplus.gov)
According to Dr. Reinhold Vieth, a professor in Nutritional Sciences at the University of Toronto, "If your shadow is longer than your height, then that sunshine does not provide enough ultraviolet light to make vitamin D. (prweb.com)

Cigarette smoke increases the amount of Vitamin C that the body needs to repair damage caused by free radicals. (healthcastle.com)

This is why women planning on becoming pregnant should be taking a multivitamin with plenty of folate, and why all pregnant women receiving prenatal care are put on a prenatal vitamin. (healthyplace.com)

Vitamin D is an essential nutrient long-known for its role in maintaining bone health. (cdc.gov)
Vitamin D is a fat-soluble vitamin that plays critical roles in the proper functioning of your body, including bone health and immunity. (healthline.com)
Vitamin D is a fat-soluble vitamin that plays a critical role in several aspects of health, including bone health and immunity. (healthline.com)

Ask your health care provider for recommendations about these vitamins. (medlineplus.gov)
Retrieved on December 03, 2023 from https://www.news-medical.net/health/Vitamin-D-Overdose.aspx. (news-medical.net)
To help women in need, The Vitamin Bridge donates prenatal vitamins to first-touch providers which include pregnancy centers, free health clinics, maternity homes and organizations which serve homeless, pregnant women. (guidestar.org)
In patient care and public health assessments, vitamin D is defined as the sum of 25-hydroxyergocalciferol (25-hydroxyvitamin D2) and calcifediol (25-hydroxyvitamin D3). (cdc.gov)
Further, scientists need to do more research to investigate how vitamin K2 produced by the gut may influence health ( 10 , 11 , 12 ). (healthline.com)
Vitamin A also helps maintain the health of the cornea, the eye covering. (healthy.net)
The value of eating certain foods to maintain health was recognized long before vitamins were identified. (wikipedia.org)
There are a number of vitamin-D trials under way, most notably VITAL , a National Institutes of Health (NIH) study, launched in January. (medscape.com)
In general, there's little clinical research showing that vitamin E supplements benefit your health. (livescience.com)
Vitamin B12, or cobalamin, is essential for human health and survival. (kcl.ac.uk)
Yet, even without symptoms, too little vitamin D can pose health risks. (webmd.com)
The potential roles of vitamin D are currently best described as hypotheses of emerging interest, and the conflicting nature of available evidence cannot be used to establish health benefits with any level of confidence, IOM says. (org.in)
Fur- health and disease is well recognized and thermore, supplementation of vitamin A and has been frequently discussed [ 4-7 ]. (who.int)

Vitamins are substances that your body needs to grow and develop normally. (medlineplus.gov)

Anatomy12

Organisms7

Diseases39

Chemicals and Drugs107

Analytical, Diagnostic and Therapeutic Techniques and Equipment37

Psychiatry and Psychology3

Phenomena and Processes41

Anthropology, Education, Sociology and Social Phenomena1

Technology, Industry, Agriculture16

Information Science4

Named Groups1

Health Care31

Geographicals5

Deficiency119

Intakes5

Beta-carotene12

Intake12

Dietary11

Sunlight13

Forms of vitamin7

Metabolism8

Folic acid5

Enough vitamin12

Mortality12

Nutrients6

Deficient in vitamin3

Infants5

Centers for Diseas1

Antioxidant7

Supplement8

Lack of vitamin5

Effects of vitamin3

Importance Of Vitamin3

Pantothenic acid2

Niacin4

Calcium13

Liver10

Osteoporosis3

Concentrations6

Rickets2

Nutrition11

Tissues5

Water-soluble B vitamins1

Bones3

Sources of vitamin4

Benefits of vitamin3

Levels52

Mineral9

Doses3

Findings8

Phylloquinone2

Thiamine1

Provitamin A carotenoids1

Deficiencies5

Biochemical1

Riboflavin1

Healthy11

Amounts3

Exposure1

Absorption6

Supplementation is not2

Decline1

Found20

Suggests4

Ascorbic2

Supplemental1

Immune11

Researchers9

People19

Sunshine2

Free radicals1

Folate1

Bone health3

Health13

Substances1