“Though apparently vague and non-specific, most of the symptoms of fluoride toxicity point towards some kind of profound metabolic dysfunction, and are strikingly similar to the symptoms of Hypothyroidism.” http://poisonfluoride.com/pfpc/html/symptoms.html
The effects of fluoride on thyroid hormone - regulated biochemical events have been known for over 80 years. For many years fluoride compounds were used as the first line of defense in the treatment of hyperthyroidism. http://poisonfluoride.com/pfpc/html/thyroid_history.html
Worldwide dentists are trying to convince the public that children aren’t getting enough fluoride, implementing water- and salt fluoridation schemes, but the exact opposite is true: children - and adults - are actually overdosing on fluoride. Tables are listed here (fluoride in food): http://poisonfluoride.com/pfpc/html/f-_in_food.html
A comprehensive website dealing with issues related to salt fluoridation. Worldwide many more people are affected by salt fluoridation than water fluoridation. http://poisonfluoride.com/pfpc/html/salt_index.html