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in childhood or adulthood could affect reproduction and growth; how low dose exposure at sensitive developmental stages could affect children and babies later in life; and how parental exposure could affect the next generation. Studies have shown links between BPA and cancer, diabetes, heart disease, and a host of other illnesses.
One major sticking point for scientists is the challenge of drawing conclusions from hundreds of studies, each using different animals (mice and rats among them), difference between michael kors outlet bags
doses, and routes of exposure. As the Environmental Protection Agency has noted, "there is controversy about whether effects seen at lower doses in animals are meaningful and relevant to humans." And scientists have also wondered whether rodents are more sensitive to the chemical than us because they metabolize it differently.
Last year, the NIH launched a new round of studies, all with the same methodology, designed to answer the some of the niggling questions michael kors outlet handbags online and help the government provide clearer guidance cheap michael kors handbags outlet
than it's been able to so far."Then, you greatly increase the probability that you're going to get michael kors outlet vaughan mills black friday chemicals having estrogenic activity released," he says, adding that more than 95 percent of the products tested positive after undergoing this sort of stress.
But what about all those products marketed as BPA free? That's a claim being made for everything from dog bowls to bento boxes these days.
The team concentrated on BPA free baby bottles and water bottles, Bittner says, "and all of them released chemicals having estrogenic activity." Sometimes the BPA free products had even more activity than products known to contain BPA.
The testing didn't show which chemicals are to blame, which is likely to be frustrating to manufacturers.
But Bittner says consumers should be encouraged that at least some michael kors outlet shoes
plastic michael kors bags outlet products had no estrogen like activity. He says that shows it is possible to make these products.
Early reaction to the study was mixed. Some scientists wondered about the test's reliability. Others noted that wine and many vegetables also can act like estrogen. And a few observed that Bittner has a financial interest in the testing lab and in a company involved in making plastic products that don't release estrogenic chemicals.
On the other hand, groups that have warned about the potential dangers of BPA in the past seemed to welcome the new research.
"This is really helpful because they took a look at very common products," says Sonya L
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