
Some Research Suggests Fluoride Toxicity Harms the Brain
Some studies also suggest that fluoride exposure may be associated with an increased risk of neurological issues, such as attention-deficit/hyperactivity disorder (ADHD), cognitive impairment, and developmental delays. A 2019 Canadian study found that boys born to mothers who reported drinking higher amounts of fluoridated water during pregnancy had lower IQs at ages 3 and 4 than boys whose mothers drank less. No effect was seen in girls. The study was limited by the fact that it was based on self-reported data and couldn’t include groups that didn’t know if they were drinking fluoridated or non-fluoridated water. An earlier study in Mexico found similar results in children between the ages of 4 and 12. Although neither study is definitive, they do raise concerns about the potential long-term effects of high fluoride levels on brain development. Industrial fluoride is classified as a potential neurotoxin.