um, OK...
First, I have a PhD in Pharmacology/Toxicology and my sub-field is pharmacokinetics and risk assessment. Back in 15xx, Paracelsus said something to the effect of "the dose makes the poison" (if you google Paracelsus, you'll find what he really said, but that's close enough). Basically what that means is, it doesn't matter if its toxic if you don't get enough of it. Everything is toxic, I've heard stories of people drinking too much water and dieing. Bisphenol A is a big example of this - in studies in rats where they dose with huge amounts of the stuff it has a whole bunch of adverse effects, and its has a fairly well defined mechanism of action. It's mechanism of action is relevant to humans. So, now, media and lots of poeple start screaming, take it out of everything! Which sounds like it makes sence, but
here's the rub. A tiny, almost infinitesimal amount of BPA leaches into your food and water. So, your dose is a fraction of the rat's dose. But, what does that mean? Well, you have to take it a step further, what amount of that absorbs through your intestine? Again, that's a fraction of the infinitesimal "dose" that got there. In fact, studies being done in humans are hampered by detection limits - the amount getting in is so tiny it can't be measured. Oh - in fact there are studies being done in humans - that right there says a lot. My group works with BPA, I don't personally do that. I work with pesticides - we couldn't get permission to do any of the studies that are being done with BPA with our pesticides.
The first big study with BPA that started all this hype can't be repeated, several labs have tried and they just can't get the same results.
So, much of what you've heard about BPA is true - at very very high doses in rats. At low doses - absolutely nothing. Your body is an amazing thing, it can safely clear not only BPA but millions of other things you are exposed to everyday.
BPA is one of the latest-greatest hypes. Wait a few years, it will be something else.
I purposefully expose myself to so many much much more toxic things - alcohol, caffeine, benzene (in gasoline, nasty stuff)... But these we all accept because they've always been there.