Wednesday, January 30, 2008

Bisphenol-a

I linked to the aluminum can popcorn device below and mentioned the coating in the can. Newsweek mentioned it in a recent article:

'Take bisphenol A. It's a basic constituent of the polycarbonate plastics found in many baby bottles, sippy cups and juice bottles. A highly versatile compound, it is also found in dental sealants, CDs, DVDs and the resin linings of food and beverage containers, including many cans and takeout cartons. But most scientists say small amounts can leach out—and ultimately find their way into our bodies—when the plastics start to break down under high heat or wear and tear. The CDC has found BPA in 92 percent of Americans age 6 and older who were tested. But the chemical industry says it's safe—and the Food and Drug Administration agrees. "It's not possible to contact harmful levels of it," says Steven Hentges of the American Chemistry Council, which represents the major chemical companies.

Reproductive biologists aren't so sure. Patricia Hunt of Washington State University was alerted to possible dangers of BPA in 1999 when her mouse study on an unrelated topic suddenly went haywire, with dozens of female mice unexpectedly developing chromosomal abnormalities in the eggs they carried in their ovaries. As it turned out, a lab worker had used the wrong detergent to clean the animals' cages—one that caused BPA to leach out of the plastic cages and feeding bottles. Hunt tried washing brand-new cages with the same detergent to confirm the source of the problem. She then began studying BPA exposures in unborn rodents, which she followed into adulthood. The results were striking. Almost half the eggs of female mice exposed to low doses of BPA during gestation carried extra copies of chromosomes or were missing chromosomes. No one has replicated the findings.

There are other potential effects. Hundreds of animal and test-tube studies suggest that low-dose exposures, particularly during gestation, may later lead to breast and prostate cancer, abnormalities in the reproductive tract and behavioral problems, among other things. But there is disagreement about the implications for human health. Two groups convened by the National Institutes of Health have reached opposite conclusions. In 2007, advisers to the government's National Toxicology Program found "minimal" cause for concern. Meanwhile, another scientific panel produced a consensus statement saying that, based on animal data, common levels of exposure could pose a problem and that further study was needed. "We can't say there are conclusive data in humans," says Frederick vom Saal of the University of Missouri, who headed the second panel. "But given the fact that we're seeing irreparable damage in animals, for heaven's sake, let's get this out of products our babies are coming in contact with."'

Endocrine disruption.

http://www.cerc.usgs.gov/Other_Webs/endocrine/framework.htm

Bpa disrupts young brains.

Hermaphrodite fish and the pill etc
...

Drugged waters
...

Who knows the links go on and on, we are certainly all going to die!

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