In a 2023 blog for Science-Based Medicine, Dr. Steven Novella critiques fluoride research, emphasizing that many studies originate from regions in China with naturally high fluoride levels. These levels exceed the CDC's recommended 0.7 milligrams per liter by a significant margin. Even at these elevated levels, Novella argues, the impact on cognitive functioning is not clinically profound. He stresses the importance of examining potential neurotoxicity, noting that every IQ point is invaluable, hence warranting serious consideration of fluoride exposure limits to safeguard brain development.
Of course, all potential neurotoxicity to the developing brain should be taken very seriously. Every IQ point is a precious human resource.
The effect, in other words, if it is real, does not appear to be clinically dramatic.
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