In an interview with Dr Mercola and someone else ( I can't find the video right now), Dr Mercola says how difficult it was in the 70s to prescribe antidepressants due to their severe side effects.
He goes on to say that by the late 80s, the same drugs no longer seem to have the severe side effects.
It occurred to me that they had added fluoride to antidepressants and this is what makes the brain forget about the severe side effects until they reach tolerance. Once they are addicted to these, the widthdrawals are so severe and even deadly, that few make it throught getting off of them.
Drs merely change the drugs when they can no longer up the doses due to tolerance.