The NTP report links excessive fluoride levels in drinking water to lower IQ in children.
The U.S. National Toxicology Program (NTP) has released a report linking fluoride levels twice the recommended limit in drinking water to lower IQ in children. The report, which includes data from studies conducted in Canada, China, India, Iran, Mexico, and Pakistan, found that water containing more than 1.5 milligrams of fluoride per liter was associated with lower IQs. The limit is above the recommended 0.7 milligrams per liter of water by federal health officials since 2015, while the World Health Organization (WHO) sets a safe fluoride limit at 1.5 milligrams per liter. The CDC states that fluoride strengthens teeth and reduces cavity risk, but critics argue against adding low levels of fluoride to water.
August 21, 2024
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