Health Alert: Fluoridated Drinking Water Associated with Higher Rates of Thyroid Problems.
United Kingdom researchers have found a correlation between the amount of fluoride in public drinking water and an increase in the incidence of underactive thyroid. They found that when fluoride levels exceed 0.3 milligrams per liter, the risk for having an underactive thyroid increases by 30%. The researchers believe that efforts to strengthen dental health should move away from fluoridated water and focus on topical fluoride-based and non-fluoride-based interventions. Dr. Terry Davies, a professor of medicine at the Icahn School of Medicine at Mount Sinai, in New York City writes, “This dramatic increase in thyroid dysfunction associated with fluoridation of the water supply adds to previous studies indicating that fluoride has an inhibitory effect on the thyroid gland.” Journal of Epidemiology & Community Health, February 2015