An influential medical research Journal the American Medical Association (JAMA) published a very interesting study that links fluoride consumption during pregnancy to lower IQs in children. The study funded by the Canadian government and the U.S. National Institute of Environmental Health Science, was conducted using 512 pregnant women from six Canadian cities. The scientists then measured their exposure in various different ways including analyzing the amount of fluoride in their urine; looking at how much tap water and tea they drank; and comparing the fluoride concentration in the community drinking water.
Then, after the women had birth and the children were 3 or 4, the researchers administered IQ tests to the kids...