by Cate Nelson on September 11, 2009 · 1 comment
In the wake of the Sigg/bisphenol-A controversy, a top researcher and CEO of Environmental Health Sciences fills us in on the news: endocrine disruptors such as BPA and phthalates are indeed toxic at low-level doses, too. And they’re toxic in entirely different ways than at the traditional high-dose testing indicates.
The way the tests work today is we think that by testing at high doses we’re gonna see everything. So that once we get to a dose that’s intermediate and we don’t see anything, we’re golden.
But the science is telling us that at really low doses as contaminants mimic hormones. They can have effects that are totally unpredictable by what happens at high doses.
Pete Myers spoke to Living on Earth about the consequences of current testing.
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A new Health Canada study found that bottles marketed as “BPA-free” actually leach the hormone-disrupting chemical into liquids.
The study says that these bottles contain “trace amounts”, but some sources cite an internal memo, which says that two brands contain “high doses”.
For their part, bottle manufacturers claim that the study must have been performed wrong.
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The Canadian Broadcasting Corporation (CBC) is reporting that a recently-published study by Health Canada found that the vast majority of canned soft drink and energy drinks contain bisphenol A, a known endocrine disruptor and estrogen mimic.
The study, published in the Journal of Agricultural and Food Chemistry in January, tested 72 canned drinks purchased in 2007 and found detectable levels of BPA in 69 of them. The levels are within the limits of what Health Canada considers “safe,” however, some critics believe that there is no safe level of this chemical, pointing out that studies in peer-reviewed science journals have shown that BPA can increase breast, ovarian, and prostate cancer cell growth in animal testing even at very low doses.
[read the full article...]
In the wake of the Sigg/bisphenol-A controversy, a top researcher and CEO of Environmental Health Sciences fills us in on the news: endocrine disruptors such as BPA and phthalates are indeed toxic at low-level doses, too. And they’re toxic in entirely different ways than at the traditional high-dose testing indicates.
