Fluoride Studies Fluoride studies have been conducted in astronomical numbers since its introduction to water supplies in the 1940's. From all of the studies completed, no one has been able to say for sure that fluoride is beneficial. Most groups would say that fluoride addition is in the best interest of the community. Some, however, argue that the possible adverse affects outweigh the positive effects. Fluoride is a derivative of the element fluorine.
Fluorine is a halogen element.
It is extremely reactive and toxic. Chemically combined with sodium, the compound sodium fluoride is obtained, this compound is the main compound used to fluoridate water supplies. Exposure to excessive levels of fluoride can result in a variety of physiological responses.