The literally bold-faced conclusion of your article is that no evidence exists that community water fluoridation affects childhood IQ.
We have a natural experiment running for 80 years where each arm of the experiment has N > 100e6. If there was going to be evidence of community water fluoridation lowering IQ, it would have emerged by now.
We have a natural experiment running for 80 years where each arm of the experiment has N > 100e6. If there was going to be evidence of community water fluoridation lowering IQ, it would have emerged by now.