Study Links Heptachlor, PCBs and Form of Vitamin E to Diabetes

"An analysis of 266 potential environmental contributors to type 2 diabetes published May 20, 2010 in the online edition of the journal PLoS ONE, links the disease to individuals who have higher levels of polychlorinated biphenyls (PCBs) and the pesticide heptachlor, as well a form of vitamin E found at high levels in soybean and corn oil, in their bodies compared to the general population. PCB was banned in 1979 and most uses of heptachlor were canceled between 1978 and 1989 (except for limited control of fire ants, which continues), but the compounds persist in the environment, especially near former industrial sites or contaminated soil. Environmentalists point to the fact that chemicals banned decades ago are still increasing people’s risk of disease, as a reason to take a precautionary approach when evaluating and registering chemicals.

The analysis, led by Atul Butte, MD, PhD, assistant professor of medical informatics and pediatrics at the Stanford University School of Medicine, drew on data collected by the Centers for Disease Control and Prevention as part of the National Health and Nutrition Examination Survey (NHANES) to examine a wide range of environmental influences on type 2 diabetes."

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