Scientific American 3/15/12
Here is the result of a three year study which was inspired by the claims of the Bisphenol A chemical such as in water bottles and baby bottles, that hit the news as a scare story a few years ago.
"There truly are no safe doses for chemicals that act like hormones, because the endocrine system is designed to act at very low levels," Vandenberg, a postdoctoral fellow at Tufts University's Levin Lab Center for Regenerative and Developmental Biology, told Environmental Health News.But many toxicologists subscribe to "the dose makes the poison" conventional wisdom. In other words, it takes a certain size dose of something to be toxic. They also are accustomed to seeing an effect from chemicals called "monotonic," which means the responses of an animal or person go up or down with the dose.---As examples, they provide evidence for several controversial chemicals, including bisphenol A, found in polycarbonate plastic, canned foods and paper receipts, and the pesticide atrazine, used in large volumes mainly on corn.
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My thoughts:
Yet again with the corn! More corn issues!
I was extremely concerned with the findings and the scientists resistance to stop believing the old school chemical ideas that problems start with a certain dose and get worse the higher the dose. What this says about problems with a low dose and problems with a medium dose but not necessary having problems with a high dose means a paradigm shift is in order.
These findings are troublesome.