Well my father had false teeth from age 20 no exposure to mercury that i know of and yet died of Alzheimers age 75

I have some amalgam fillings but am severly allergic/sensitive to Aluminium having been toxic with it 20 yrs ago when quite literally i was a hairs breath from Alzheimers age 40

I know plenty of other people in same boat along with Alzhemers victims who also never had amalgam fillings or exposure to mercury so I reckon the researchers need to do a bit more work on this one