The list of untested yet still "approved" chemicals / additives is endless. The ability to pin point the guilt of causing a disease on any one of them is nearly impossible.
Very true. Companies are trusted to perform their own testing which is, at best, only testing for superficial, short-term effects. And substances are tested singly, despite the fact that we know that their effects are often multiplied by orders of magnitude. Look at the "inert ingredients" in pesticides for example.
