Stop changing your post so I can reply lol! That Harvard study is a meta-analysis of seperate 27 studies conducted independently around the world hahaha, perhaps you reside in an area with high fluoridation. I'm not even going to acknowledge a link to metabunk... In closing there are 2 types of people in the world - those who know 2 Boeing 767's can't implode 3 buildings and those that don't.