Fluoridation Barely Fails a Risk-Benefit Test

Epistemic Status: back-of-the-envelope. I am about to present a bad cost-benefit analysis of fluoridation. However, something is better than nothing, and I have not seen anyone else do this. Summary: Fluoridation causes more monetary harm than good if it causes an average IQ point loss of more than 0.2. According to a recent meta-analysis , the effect size from high-quality studies is 1 IQ point…