The decision to add fluoride to public drinking water has had perhaps one of the most dangerous and widespread effects on our overall health, most notably the brain.

The Fluoride Action Network (FAN) reported a study that found fluoride was linked to lower IQ, even at ranges added to U.S. water supplies. One study sponsored by UNICEF found that IQ was reduced at just 0.88 mg/l of fluoride, a level that is added to U.S. drinking water systems and considered within the optimal range.

FAN also stated that 34 studies now link fluoride to lower IQ levels in humans, while other studies link it to learning and memory impairment, fetal brain damage, and altered neurobehavioral function.