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Studies reaffirm safety of fluoridation

  • ADA News
Researchers found no link between fluoride exposure and adverse health effects in a study published in Neurotoxicity Research, the National Toxicology Program, or NTP, announced in April.

The study, sponsored by the NTP, headquartered at the National Institute of Environmental Health Sciences of the National Institutes of Health, reported no observed fluoride exposure-related differences in motor, sensory or learning and memory performance in rats. Researchers also found no exposure-related pathology in the heart, liver, kidney, testes, seminal vesicles or epididymides.

The study comes after a 2016 NTP systematic review that found a "low to moderate level of evidence" that supported adverse effects on learning and memory in animals exposed to fluoride in food and water. However, many of the studies examined as part of the review included exposure to fluoride at levels higher than 0.7 parts per million, the recommended level for community water fluoridation in the U.S.

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