Harvard scientists have studied effects of fluoride in drinking water and found that high levels of fluoride lowers children’s IQ. They looked at 27 studies from across the world and found a direct link between IQ scores and the levels of fluoride in the public water supply. The study’s aim was to investigate the effects of increased fluoride exposure and delayed neurobehavioral development. (1) Children in high-fluoride areas had significantly lower IQ scores than those who lived in low-fluoride areas. The children studied were up to 14 years of age, but the investigators speculate that any toxic effect on brain development may have happened earlier, and that the brain may not be fully capable of compensating for the toxicity.
“Fluoride seems to fit in with lead, mercury, and other poisons that cause chemical brain drain,” says Phillipe Grandjean adjunct professor of environmental health, Harvard School of Public Health. “The effect of each toxicant may seem small, but the combined damage on a population scale can be serious, especially because the brain power of the next generation is crucial to all of us.” (2)
How to avoid fluoride in your water? Installing a rainwater tank or using a reverse osmosis filtration system are two practical solutions. For more details on reverse osmosis see link. Speak to your local council and express your views on fluoride in your drinking water.
(1) Environmental Health Perspectives, 2012; published online: http://dx.doi.org/10.1289/ehp.1104912