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Current query:Type: Scientific Studies
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Traditional covert influence of industry on occupational and environmental health policies has turned brazenly overt in the last several years.
More than ever before the OEH community is witnessing the perverse influence and increasing control by industry interests. Government has failed to support independent, public health-oriented practitioners and their organizations, instead joining many corporate endeavors to discourage efforts to protect the health of workers and the community. International Journal of Occupational and Environmental Health [PDF]. 2 March 2007. More...
A study of Chinese women finds no association between serum DDE levels and menstrual cycle characteristics.
High DDE concentrations were associated with a non-statistically significant lengthening of the menstrual cycle. This conflicts with previous studies in Laotian women who were found to have decreased menstrual cycle length with increased levels of DDT and DDE. These conflicting results may be due to differences in study design or the study population. Environmental Research 1 November 2005. More...
Science Byte: Although occupational and environmental diseases are often viewed as isolated and unique failures, they are in fact an outcome of a pervasive system of corporate priority setting, decision making, and influence.
This system produces disease because political, economic, regulatory and ideological norms prioritize values of wealth and profit over human health and environmental well-being. There is a substantial tradition of manipulation of evidence, data, and analysis. IJOEH 23 October 2005. More...
Prenatal exposure to PCBs/PCDFs in girls from Taiwan is associated with altered menstrual cycles and abnormal hormone profiles.
Exposed girls had a menstrual cycle on average one day shorter than non-exposed and a 40% higher rate of irregular menstrual cycles. Serum levels of estradiol and the pituitary hormone, FSH, were also higher in exposed girls. Chemosphere 1 October 2005. More...
Scientific research links cardiovascular disease to a number of environmental exposures, including air pollution, metals and solvents.
Recent research on air pollution indicates that the annual health impacts in the US from particulate air pollution attributable just to diesel exhaust from cars, trucks, and construction equipment includes 21,000 premature deaths and 27,000 non-fatal myocardial infarctions, plus a range of other impacts. 25 June 2005. More...
Exposure to active or secondhand smoke increases the risk of failure in fertility treatments.
Despite similar embryo quality, women undergoing in vitro fertilization with exposure to tobacco smoke have one-half the rate of implantation as women not exposed to smoke. Pregnancy rates were 40% lower in smoke-exposed compared to non-exposed.. Human Reproduction 25 May 2005. More...
Science Byte: A study in Michigan reports that follow-up testing for lead levels is less likely for children living in high-risk compared to low risk areas.
At least half of the children whose lead levels were abnormally high miss follow-up tests. Missed check-ups were more likely for Hispanic and nonwhite children, and for children in urban vs rural areas. These differences in care are likely to increase the burden of cognitive impairment among at-risk children. JAMA. 11 May 2005. More...
The consequences of exposure to many other chemicals or mixtures of chemicals, such as insecticides—chemicals oftentimes specifically designed to be toxic—are largely unknown.
Many of these chemicals or their metabolites are routinely found in the blood and body fluids of pregnant women and children. Exposures to environmental toxins have been linked with higher rates of mental retardation, intellectual impairment, and behavioral problems, as well as preterm birth, low birth weight and spontaneous abortion. PLOS Medicine. 29 March 2005. More...
Researchers report that exposure to persistent organic pollutants in the womb has declined in the eastern Canadian arctic.
Researchers document sharp drops in umbilical cord blood levels of several persistent organic pollutants, including PCBs, DDT and HCB. Lead and mercury also declined. The researchers conclude the decreases are likely due both to long-term efforts around the world to reduce environmental releases (and thus contamination of the food chain) as well as to changes in the Inuit diet that shift away from contaminated native foods. 2 July 2003. More...
A large study by Maryland public health scientists finds that blood lead levels beneath the current OSHA "action level" for industrial workers is associated with a 46% increase in mortality of exposed people.
The increases are observed in circulatory diseases and cancer. 1 November 2002. More...
Heavy metals linked to male infertility.
Exposure to the heavy metals, cadmium and lead, has been suggested to cause problems with fertility. A number of problems have arisen in attempting to study this problem and are complicated by the likely genetic predisposition in some individuals to be more susceptible to these chemicals. Human Reproduction Update. 30 June 2001. More...
Chronic lead exposure in non-human primates alters sperm chromatin structure at blood lead levels relevant to the human population
Occupational exposures to high levels of lead are known to result in decreased sperm counts and serum testosterone. Mean lead levels of 10 microg/dL were associated with alterations in sperm chromatin stucture but not hormone levels or semen quality. Toxicology and industrial health. 26 September 2000. More...
Harvard study reviews environmental toxins associated with recurrent pregnancy loss.
Heavy metals such as lead and mercury, organic solvents, alcohol, and ionizing radiation are confirmed environmental toxins, and exposure could contribute to pregnancy loss. Caffeine, cigarette smoking, and hyperthermia are suspected toxins, and the toxic impact of pesticides remains unknown. Seminares in Reproductive Medicine 1 April 2000. More...
Van Birgelen et al. report dramatic synergistic interaction between a PCB congener, PCB 153, and dioxin.
They studied the impact of several PCB congeners and dioxin on hepatic porphyrin accumulation in rats. 1 May 1996. More...
Children with high lead levels show an increased likelihood of engaging in agressive and delinquent behaviors.
Needleman et al. conclude that lead exposure is associated with an increased risk for antisocial and delinquent behaviors, and that "environmental lead exposure, a preventable occurrence, should be included when considering the many factors contributing to delinquent behavior." 7 February 1996. More...
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