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Small amount of toothpaste being applied to a toothbrush with a glass of water in the background


Some research has linked community water fluoridation with increased risk of ADHD in children. However, there are no high-quality studies showing that fluoride in drinking water, toothpaste or mouth rinses causes ADHD. Experts consider regular use of fluoride from these sources to be effective for preventing dental cavities (i.e., dental caries), and the only health risk known to occur with excessive use is fluorosis, a condition in which teeth and bones become brittle due to excess fluoride.

Sign in to learn why evidence correlating water fluoridation and ADHD is limited, and find out what the American Dental Association recommends when using fluoride-containing toothpaste and mouth rinses in children.

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