The plastic additive has been by environmental advocacy groups. But the chemical had no effect on rats fed thousands of times the amount a typical person ingests, government scientists are in the journal Toxicological Sciences. The results “both support and extend the conclusion from the U.S. Food and Drug Administration that BPA is safe as currently used,” says , a research chemist with the FDA’s. Scientists agree that in large doses, BPA can act a bit like the hormone estrogen. But there’s been a lot of debate about whether the tiny amounts found in people have the potential to cause problems. Read more.