By Dr Karin Alexander*
In the 1930s, American scientists and public health researchers made a simple, but profoundly important discovery. People living in towns with around one part per million of fluoride found naturally in their drinking water had much less tooth decay that people whose drinking water contained lower levels of fluoride.
All water supplies contain fluoride, but the levels can vary significantly. At the time, tooth decay in Western countries was a greater public health problem than today, and most people wore false teeth from early adulthood..............................
A long article about the wonders of fluoride the comments underneath are more informed.