well ,what i've seen so far is that age does play a big role in mercury toxicity ,it's almost like a snow ball effect ,most people get there amalgams when young and may have a few health issues ,but the major health issues do not start untill later for most , when we are older ,myself i thought at first that the symtoms that I was experiencing were part of the aging process but as I got worse symtoms with age I knew that any think this horrible could not be part of the natural aging process,the bad thing is that the doctors I had seen in the past didn't have a clue and just wanted to treat the symtoms and not fix the problem ( but the good thing that comes with age is wisdom and there are many wise people in this forum)