Since the 1950’s, towns all over the world are pressured to put fluoride in their drinking water. Data shows that not only does it have dangerous side effects but it does not even do what it purports doing. Dental and bone fluorosis and fluoridation-related cancers and congenital defects are increasing at an alarming rate : why ? Because of a scientific calculation made 60 years ago and never questioned since that allowed big aluminium companies to recycle the fluoride lef