Fluoride is used in the industrial world. The uses are in the areas of etching glass, polishing aluminum and is in pesticides. It is also in water and the tooth paste that most put in their mouths every day. Some of the negative side effects of fluoride in your life are allergies, nervous system problems and chronic arthritis. Many years ago it was thought to help promote bone growth but studies proved that the new growth was weak and had inferior quality. There are also many links to fluoridated water and cancers. Thus, utilize a good home water filter and limit your use in items such as toothpaste. Things that make you say hmmm!