A new study that followed thousands through their lives found no evidence that fluoride in drinking water had a negative effect on young people’s IQs. Researchers found that children exposed to fluoridated water did not experience lower IQ or reduced cognitive performance later in life, according to findings published in the Proceedings of the National Academy of Sciences. The research followed more than 10,000 people in Wisconsin, tracking fluoride exposure during childhood and measuring cognitive performance over decades. Participants were tested at age 16 and again throughout adulthood into their 50s, 60s, 70s and 80s.The result: no measurable difference between people who grew up in communities with fluoridated water and those who did not.
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