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Water Fluoridation May Increase Risk of Underactive Thyroid Disorder - Newsweek

A large study that looked at data from nearly every general medical practice in England suggests that water fluoridation may increase the risk of developing hypothyroidism, or underactive thyroid. This condition, in which the thyroid gland doesn’t produce enough hormones, is associated with symptoms such as fatigue, obesity and depression.

Fluoride and Fluoridated Water's Link to Thyroid Disease

Water fluoridation is defined as the addition of industrial-grade fluoride chemicals -- typically hydrofluorosilicic acid or and sodium silicofluoride -- to the water supply, with the goal of helping prevent tooth decay. It's estimated that 70% of the water supply in the United States is fluoridated. This contrasts with most developed nations, including all of Japan and most of Western Europe, which do not have fluoridation programs.


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