BPA overload

My colleague Simon Robinson noted the increasing hits on ICB’s bisphenol-A (BPA) chemical profile online, which was published last year in October. Last week, it generated over 1300 hits. Barbara Ortner, another colleague and author of the Chemicals Confidential blog, dubbed BPA as the current most hated chemical as it is constantly splashed through the news from various studies indicating it’s health/environmental risks (or lack thereof from counter studies).

Here are some of the recent ones that came out on the news as well as comments from the American Chemistry Council (ACC) on these findings:

  • An investigation from Physicians for Social Responsibility (PSR), American Nurses Association (ANA) and Health Care Without Harm (HCWH) revealed that the chemicals BPA, phthalates, PBDEs and PFCs are found in the bodies of health care professionals who participated in the study.(see ACC comment)

  • High levels of workplace exposure to BPA may increase the risk of reduced sexual function in men, according to a Kaiser Permanente study. (see ACC comment)

  • A study from the National Institute of Health Sciences (NIEHS) found a link between maternal exposure to BPA in early pregnancy and the behaviour of female children up to the age of two years. (see ACC comment)

ACC also commented that the US Environmental Protection Agency’s (EPA) recent rodent study finds that low dose exposure of BPA has no effect on female and male rat offspring.

Speaking of endocrine disruptors, another plasticizer being linked to this issue is phthalates. According to a recent study by researchers from the University of Rochester Medical Center, NY, higher concentration of phthalates in mothers’ prenatal urine are altering the brains of baby boys and making them more feminine.

The ACC noted that the researchers of this study acknowledged that their results are not straightforward.

“It appears that the researchers selectively excluded data, eliminating certain subjects from the analysis, in order to strengthen their conclusion. Even the phraseology of the paper is more sensationalistic than scientific.” – ACC

One Response to BPA overload

  1. Pradeep 18 November, 2009 at 12:24 am #

    The effects of endocrine disruptors are highly non-linear. It would not be straightforward to draw conclusions supporting or against BPA. However, the issue here is reducing the hazard, rather than exposure-specific studies in cats and rats. Are humans at higher risk due to exposure to BPA? We might not know the answer yet, but we sure can reduce our exposure to BPA.

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