[roguecoder]

Even if you believed that to be the case, you could choose an area that had high natural fluoride in the water, provide gravity filters and then double-blind supplement fluoride at a moderate level for one group.

It is certainly more ethical than saying "we are definitely going to let your children's teeth rot because some people think, on the basis of circumstantial evidence, it might have approximately the same effects as not having children's books in the home."