http://en.wikipedia.org/wiki/Bisphenol_A I don't know enough about plastics to comment without a Google search first.
Looks as though there are hundreds of formulas of plastic , some do leach some of their components into food, drugs or drink depending on circumstances of heat or reactance with the ambient and its contents.
What harm this might be doing is poorly measured, some of this effect is recently discovered.
One of the surprising things I found is that bacteria are more and more being discovered eating plastic, this might be a good way to reduce the mass of the problem, or it might be a new way for the plastic components to enter the food chain.
Some plastic might leach phenol or metal into food but some are better than others. I think that if a plastic were chosen for its resistance to food chemistry and heat, Sous Vide could be quite safe as a way to cook, also metal and glass containers could be made to work, no more difficult than canning.