Ambient exposures levels level of exposure. Medical search. Frequent questions

Exposures to particulate matter and nitrogen dioxide in early to mid-pregnancy are significantly associated with lower birth weight, researchers found. (news-medical.net)
Considerable evidence indicates an association between exposure to air pollution, including particulate matter (PM) from wildfire smoke, and increased risk for lower respiratory infections. (cdc.gov)
Ambient fine particulate matter (PM 2.5 ) is the world's leading environmental health risk factor. (nature.com)
Long-term exposure to ambient (outdoor) fine particulate matter less than 2.5 μm in diameter (PM 2.5 ) is the largest environmental risk factor for human health, with an estimated 4.1 million attributable deaths worldwide (7.3% of the total number of global deaths) in 2019 1 . (nature.com)
The levels of particulate matter reported in Qatar were in the upper range of ambient air pollutants reported internationally, and may influence the country's future lung cancer burden. (who.int)
The use of ambient air concentrations to represent population exposures is justifiable when the health findings underlying the benefits analysis are similarly based on ambient concentration data and when the outdoor concentrations are correlated with personal exposures, as is the case for particulate matter (PM). (nationalacademies.org)

To estimate long-term exposure to traffic-related air pollutants on an individual basis and to assess adverse health effects using a combination of air pollution measurement data, data from geographical information systems (GIS) and questionnaire data. (bmj.com)
Levels of the pollutants were monitored from ambient air quality data (U.S. Environmental Protection Agency Air Quality System) with an average of four monitoring stations within 8 kilometers to 14 kilometers of each participant's residential address. (news-medical.net)
Conditional Poisson regression models were used to estimate the associations between the number of ED visits and concentration levels of gaseous air pollutants (carbon monoxide (CO), nitrogen dioxide (NO 2 ), sulphur dioxide (SO 2 ), ozone (O 3 )) and particulate matters (PM 2.5 and PM 10 , fine and coarse, respectively). (springer.com)
Based on the literature review, the authors suggested that environmental exposures to air pollutants can contribute to dysregulation of mesolimbic dopamine (DA) turnover, "resulting in an increased propensity for addictive behaviors to manifest themselves" (Sussman et al. (springer.com)
If ambient air pollutants do indeed affect the central nervous system and provoke psychiatric symptoms" (Amitai et al. (springer.com)
The limited data on occupational exposure suggests that the greatest risks for workers in the construction industry are likely to be from environmental dust and related air pollutants. (who.int)
Extended monitoring of the composition of and human exposure to air pollutants is recommended. (who.int)
Estimating changes in population exposures to air pollutants is an essential component of EPA's benefits analyses, providing the link between anticipated emissions changes and resulting changes in health outcomes. (nationalacademies.org)

Environmental heat exposures may be associated with adverse pregnancy outcomes, but this study was inconclusive, possibly because the heat exposure range was small. (climatechip.org)
Additionally, occupational factors that increase stress on the body such as arduous work, long work shifts, and environmental exposures (including wildfire smoke) may contribute to increased susceptibility and potentially more severe illness for COVID-19 [1,2]. (cdc.gov)
In the face of public concern over mounting evidence that PFASs are associated with adverse human health outcomes, the U.S. Environmental Protection Agency recently released a plan to revisit federal exposure standards [ 4 ]. (biomedcentral.com)
2015 ), in their commentary publication, explored the following question: "Could environmental exposures be a factor in increased susceptibility to addictive behaviors? (springer.com)
The review included exposure to environmental agents carcinogenic to humans (International Agency for Research on Cancer classification), as well as lifestyle factors known to affect cancer risk. (who.int)
174) 1.Cyclohexanones 2.Environmental exposure 3.Occupational exposure 4.Solvents I.Series ISBN 92 4 157174 8 (NLM Classification: QV 633) ISSN 0250-863X The World Health Organization welcomes requests for permission to reproduce or translate its publications, in part or in full. (inchem.org)

The diagnosis of nitrogen dioxide (NO 2 ) toxicity largely depends on the history of exposure. (medscape.com)
Noncardiogenic pulmonary edema following exposure to nitrogen dioxide. (medscape.com)
Harmful effects of nitrogen dioxide (NO 2 ) often occur from either high-level short-term or low-level long-term exposures. (medscape.com)

Because of the high affinity of CO for hemoglobin, even low ambient levels of CO can lead to clinically significant toxicity over long exposures. (medscape.com)
Exposure to a variety of TCE-related compounds, which include metabolites of TCE and other parent compounds that produce similar metabolites, can alter or enhance TCE metabolism and toxicity by generating higher internal metabolite concentrations than would result from TCE exposure by itself. (who.int)

People who smoke cigarettes may have baseline carboxyhemoglobin (COHb, or HbCO) concentrations as high as 10%, and their susceptibility to toxic effects from inadvertent exposure to other sources of CO may be heightened. (medscape.com)

Findings from studies of prenatal exposure to pesticides and adverse birth outcomes have been equivocal so far. (mdpi.com)
We analyzed birth outcomes in the east Minneapolis-St. Paul metropolitan area from 2002 to 2011, where a portion of the population faced elevated exposure to PFASs due to long-term contamination of drinking water supplies from industrial waste disposal. (biomedcentral.com)
Our findings provide evidence of a causal relationship between filtration of drinking water containing high levels of exposure to PFASs and improved reproductive outcomes. (biomedcentral.com)
Some studies have identified relationships between PFAS exposure and reproductive outcomes, although the evidence regarding the pathway and significance of associations is mixed. (biomedcentral.com)
This paper provides new evidence of the effect of PFOA and PFOS exposure on reproductive outcomes. (biomedcentral.com)
This chapter discusses three key components of benefits analyses: exposure assessment, health outcomes, and concentration-response functions. (nationalacademies.org)
Finally, the concentration-response section explores the sources and selection of these functions and issues associated with the existence of thresholds, analysis of population subgroups, and assumptions regarding effects lags (the temporal relationship between changes in exposure and resulting changes in health outcomes). (nationalacademies.org)

On average, birth weight was 9.5 grams lower each interquartile range increase (4 µg/m 3 ) of PM2.5 exposure during the 14- to 22-week gestational period. (news-medical.net)
In this group, mothers exposed to the highest levels of PM2.5 at four to 20 weeks delivered babies weighing 34 grams, or 1 ounce, less in birth weight and mothers exposed to highest PM10 at nine to 14 gestational weeks delivered babies weighing 39.4 grams less, on average. (news-medical.net)

ABSTRACT To meet the country's health goals for 2011-2016, a qualitative review of exposure to risk factors for cancer in Qatar was conducted in 2013. (who.int)

Preliminary studies have found positive associations between SARS-CoV-2 infection and ambient air pollution levels (including PM) [6-8]. (cdc.gov)

Such biomarker values can be used to interpret measured levels of biomarkers in a risk assessment context. (oecd.org)
using biomonitoring in exposure assessment and risk management. (oecd.org)
This project is being led by Belgium, Finland, Germany and Switzerland with the participation of 38 institutes/organisations on the expert group and overseen by the OECD Working Party on Hazard Assessment and the Working Party on Exposure Assessment. (oecd.org)
The exposure assessment section begins with an overview of exposure assessment considerations, including issues related to exposure assessments in the epidemiological studies that are frequently used to estimate health benefits of air pollution reductions. (nationalacademies.org)
As in all other stages of the benefits analysis, the assumptions and methods used in the exposure assessment should be well-justified and clearly described, with careful attention paid to assessing and communicating key sources of uncertainty. (nationalacademies.org)
EPA's exposure assessment methods have evolved considerably over time, as is evident in the health benefits analyses reviewed by the committee. (nationalacademies.org)
Because the most recent EPA analysis reviewed by the committee (the benefits analysis for the heavy-duty (HD) engine and diesel-fuel rule) uses current data and exposure assessment methods, it serves as an illustrative example throughout this exposure assessment discussion. (nationalacademies.org)
The committee considers that the exposure assessment methods used in the analysis for the HD engine and diesel-fuel rule represent an appropriate and reasonably thorough application of available data and models. (nationalacademies.org)
2000). Many of the new studies have more sophisticated exposure assessment and thus allow for more accurate classification of TCE exposed workers (Scott and Chiu, 2006). (who.int)

Wildfire smoke exposure has been associated with lower respiratory infections such as acute bronchitis and pneumonia in many epidemiological studies of the public's exposure to smoke [2-5]. (cdc.gov)

We provide a contemporary and comprehensive evaluation of sector- and fuel-specific contributions to this disease burden across 21 regions, 204 countries, and 200 sub-national areas by integrating 24 global atmospheric chemistry-transport model sensitivity simulations, high-resolution satellite-derived PM 2.5 exposure estimates, and disease-specific concentration response relationships. (nature.com)
Available estimates suggest that exposures to most of these TCE-related compounds are comparable to or greater than that to TCE itself. (who.int)

This study sought to test the hypothesis that maternal heat exposure during pregnancy in hot regions is associated with increased prevalence of spontaneous abortions or stillbirths and to develop an analytical strategy to use existing data from maternal health surveys and existing data on historical heat levels at a geographic grid cell level. (climatechip.org)
The linkage between ambient heat exposure and pregnancy outcome followed the epidemiological time-place-person principle, by linking timing of pregnancy outcome with historical data of local area heat levels for each month, as estimated in an international database. (climatechip.org)
We applied two exposure durations: yearly average and monthly average for second month of pregnancy. (climatechip.org)
may be disrupted by a mother's exposure to air pollution and psychological stress during early to mid-pregnancy, a new USC study shows. (news-medical.net)
Exposure to each pollutant was estimated for each woman individually throughout her pregnancy and for each trimester. (who.int)
We conclude that exposure to air pollution during pregnancy may be associated with LBW. (who.int)

It is especially efficient in assessing exposures from multiple routes, i.e. inhalation, oral and dermal exposure pathways. (oecd.org)

The Task Group reviewed and revised the second draft of the criteria document and made an evaluation of the health risks from exposure to carbon monoxide. (inchem.org)

Another hypothesis about the association of COVID-19 severity and mortality with elevated exposure to PM involves changes in gene expression (upregulation) of a cellular protein (the angiotensin-converting enzyme two or ACE-2 receptor) that provides the primary entry point for SAR-CoV-2 into specific types of cells [10]. (cdc.gov)

In the same group, exposure to NO2 from nine to 14 gestational weeks was associated with a 40.4-gram decrease in birth weight. (news-medical.net)
Exposure at 33 to 36 gestational weeks reported the greatest decrease in birth weight: 117.6 grams, or 4.1 ounces. (news-medical.net)

Maternal heat exposure level was estimated using calculated levels of the wet-bulb globe temperature (WBGT), which takes into account temperature, humidity, heat radiation, and air movement over the skin (wind speed). (climatechip.org)

Therefore, if a history of exposure is not given or suspected, this conditiondisease is extremely difficult to diagnose. (medscape.com)

The WBGT range was quite narrow (most annual values in the range 24-26 °C, and most monthly values in the range 23-27 °C), which may have hidden any real impacts of high heat levels. (climatechip.org)

The review categorized the cohort studies into tiers based on the quality of the exposure assessments. (who.int)

Before the 1980's, the main source of lead exposure for the general U.S. population was aerosolized lead emitted from combustion engines that used leaded gasoline. (cdc.gov)

Between 2009 and 2012, the United States Department of Agriculture Forest Service (USFS) reported that 22% of wildfire and 20% of prescribed burn (fires intentionally set for resource benefit) work shifts exceeded the recommended daily occupational exposure limit of PM smaller than 4 microns (PM 4 , or 0.7 mg/m 3 ) specifically recommended for wildland firefighters [11]. (cdc.gov)
2007) reviewed occupational exposure to TCE and reported that the arithmetic mean (AM) of the measurements across all industries and decades was 38.2 ppm. (who.int)
On the other hand, there is growing concern about the damage caused by non-occupational exposure to noise, as in the cases of the use of headphones (stereo portable systems) 2 . (bvsalud.org)

Additionally, individuals living in particular urban areas or near congested highways may have increased risk of long-term low-level exposure. (medscape.com)

In addition, wildland firefighters, incident management personnel, and fire camp support crews can be exposed to smoke at incident command posts (ICPs) that support thousands of individuals while off the fire line, which can contribute to a higher cumulative work exposure [12,13]. (cdc.gov)
Wildfire smoke exposure may also make wildland firefighters more likely to experience severe illness from COVID-19. (cdc.gov)
Mitigating exposures to smoke can be difficult for fire managers and wildland firefighters as smoke is part of the wildfire environment. (cdc.gov)
Welders, firefighters, military and aerospace personnel, individuals working with explosives, traffic personnel, and farmers generally have higher risk of short-term exposure than those in other occupations. (medscape.com)

Identify data gaps and future research needs with regard to regulatory use of biomarkers of exposure data. (oecd.org)
And an important meta-analysis presented data demonstrating statistically that in a group of workers with high exposure to noise, increased: blood pressure systolic and diastolic, the prevalence of hypertension, and electrocardiographic changes in relation to groups and intermediate exposure low noise exposure. (bvsalud.org)

The Panasonic Lumix DMC-G10 is officially the world's lightest system camera with an eye-level viewfinder, weighing a mere 336g / 11.85 oz without a lens fitted. (photographyblog.com)

Equilibrated blood lead levels (BLLs) after chronic intake are associated with certain toxic effects. (cdc.gov)

Their neighborhood-level stressor was measured by the CalEnviroScreen Score, a California statewide screening tool to identify neighborhoods that have been disproportionately burdened by multiple sources of pollution and population vulnerability. (news-medical.net)

Biomonitoring requires little field equipment and can be an inexpensive method in monitoring workers' exposures compared to ambient air monitoring or dermal exposure monitoring. (oecd.org)

Since the 1995 IARC review, there has been a plethora of publications evaluating TCE exposure and cancer in humans, including new cohort studies, updates of cohorts, case-control studies, review articles, and meta-analyses. (who.int)

2001), with overt encephalopathy, seizures, and peripheral neuropathy generally occurring at much higher levels (e.g., higher than 100-200 µg/dL). (cdc.gov)

1995). In 1991, the Centers for Disease Control and Prevention (CDC) established a BLL of 10 µg/dL or higher as the level of concern in children. (cdc.gov)
Compare existing methods in deriving OBL (Occupational Biomonitoring Level) for selected substances of high concern, including European Substances of High Concern (SVHC) candidate substances. (oecd.org)

We examined prenatal exposure to agricultural pesticides in relation to preterm birth and term low birthweight, respectively, in children born between 1998 and 2010, randomly selected from California birth records. (mdpi.com)

Because noise exposure often starts in infancy and effects are cumulative, more attention to noise in everyday activities is needed starting early in life. (aap.org)

While the body of the G10 is comparable in size and weight to entry-level DSLR cameras, the lenses are where Panasonic have really shrunk the overall system. (photographyblog.com)

There is growing evidence supporting the associations between ambient air pollution and a wide range of health conditions. (springer.com)
2018 ). Several mental health disorders tend to be more prevalent in the urban populations and are correlated with ambient air pollution concentration levels. (springer.com)
Noise exposure is underrecognized as a serious public health issue in the United States. (aap.org)
Another study related to the knowledge of students about attitudes and practices for the hearing health and use of iPods and/or personal listening devices, demonstrated that a portion of the students surveyed use their equipment at high sound pressure levels for extended periods of time. (bvsalud.org)

The results of this can be useful for addressing co-exposures and relevant mixture effects in the future. (oecd.org)
This statement and its accompanying technical report review common sources and effects of noise as well as specific pediatric exposures. (aap.org)

teenagers often do not understand consequences of high exposure to music from personal listening devices or attending concerts and dances. (aap.org)
The highest personal and area air levels were reported in vapor degreasing (AM of 44.6 ppm). (who.int)

Indoor levels are commonly 3 or more times higher than outdoors due to releases from building materials and consumer products. (who.int)

In addition, there was a wide range of adaptive ability levels in children with autism in our study, including in those with low, average, or high cognitive scores. (cdc.gov)

There was no significant inhibition of DENV-2 RNA levels with naringin and hesperetin. (who.int)
For NO 2 , exposure lagged by 1 and 2 days has a positive statistically significant association for all and male patients. (springer.com)

The 2020 fire season saw the first-ever single wildfire to burn over 1 million acres, with 44 days at the highest fire preparedness level (and 30 days higher than the 5-year average) when fire personnel and resources are extremely scarce. (cdc.gov)

Toxic exposures to CO are most frequently the result of house fires or the use of fuel-burning heating appliances or poorly maintained generators. (medscape.com)

Twenty-one percent of the mothers reported high levels of stress in their lives. (news-medical.net)

The city's greenhouse gas emission levels are relatively low when measured per capita, at 7.1 metric tons per person, below San Francisco, at 11.2 metric tons, and the national average, at 24.5. (wikipedia.org)

Since lead has been eliminated from gasoline, adult lead exposures tend to be limited to occupational (e.g., battery and radiator manufacturing) and recreational sources. (cdc.gov)

Is ambient heat exposure levels associated with miscarriage or stillbirths in hot regions? (climatechip.org)
In one analysis, we restricted the sample to four regions with time-homogeneous ambient heat. (climatechip.org)

Greater awareness of noise hazards is needed at a societal level. (aap.org)

RÉSUMÉ Afin d'atteindre les objectifs de santé fixés par le pays pour 2011-2016, une analyse qualitative de l'exposition aux facteurs de risque de cancer au Qatar a été conduite en 2013. (who.int)
Les risques de cancer les plus élevés pour les Qatariens proviendraient de facteurs associés aux modes de vie, en particulier l'obésité, la sédentarité et le tabagisme. (who.int)

Anatomy1

Diseases5

Chemicals and Drugs12

Analytical, Diagnostic and Therapeutic Techniques and Equipment2

Anthropology, Education, Sociology and Social Phenomena1

Technology, Industry, Agriculture7

Health Care15

Particulate matter6

Pollutants8

Environmental6

Nitrogen dioxide3

Toxicity2

Susceptibility1

Outcomes7

PM2.52

Abstract1

Pollution levels1

Assessment9

Epidemiological studies1

Estimates2

Pregnancy6

Inhalation1

Carbon monoxide1

Mortality1

Decrease in birth weight2

Maternal1

History of exposure1

Impacts1

Assessments1

Lead Exposure1

Occupational exposure3

Long-term1

Firefighters4

Data2

World's1

Toxic effects1

Population1

Workers1

Cohort1

Peripheral1

Concern2

Relation1

Cumulative1

Comparable1

Health4

Effects2

Personal2

Commonly1

Range1

Significant2

Higher1

Result1

High levels1

Average1

Sources1

Regions2

Noise1

Cancer2