His point is that the problem with Phthalates and bpa is not that they are "unnatural and synthetic" but rather that they are bad for you. They'd be just as bad if they were natural.
Ahh I see now, thanks for pointing that out.
Proven is a very strong word. Care to state your proof?
Unfortunately my friend took down her blog with links to all the studies, so I don't have my original sources. But if you google phthalates estrogenic there are a bunch of studies confirming the premise.
Also, it's been proven to bioaccumulate in humans, which, given that it hasn't been proven safe, should be considered a harm in and of itself.
Completely wrong. Phthalates and bpa have already been proven harmful. Certainly there are other chemicals that mimick estrogens as well, but saying we shouldn't condemn bpa and phthalates is ridiculous.