Yes, I have read your pseudo-scientific website. If you had actually done some proper research into those references you may have found some staggering problems in the research undertaken on the subject. For example, in the so-called evidence for fluoride as one of the 'chemicals with substantial evidence of developmental neurotoxicity', they (Philippe Grandjean and Philip Landrigan) quote only one paper and in this paper they only compare the mean IQs of children in villages with different levels of fluoride, with no allowance made for any other differences, and no actual measurement of fluoride in individual children and comparison with their IQs.
What's usually used to make the anti-fluoridation argument is the Harvard review of studies, which was picked up by various media outlets, with the typical 'sky is falling, lets not investigate' approach from the media. The actual findings of the study do not show that there is any risk to public water fluoridation and if anything they show that it is safe. However, the NYS Coalition Opposed to Fluoridation put out a bizarre media release under the heading "“Harvard Study Finds Fluoride Lowers IQ – Published in Federal Gov’t Journal”" and the media ran with it, without any fact checking. A lot of the studies used in the actual review of studies were from China with exposure to fluoride through well water and inhalation of smoke from coal burning. These kinds of studies are not closely related enough to actual fluoride in tap water to be able to draw any accurate conclusions.
The authors themselves say: “The results support the possibility of an adverse effect of high fluoride exposure on children’s neurodevelopment. Future research should include detailed individual-level information on prenatal exposure, neurobehavioral performance, and covariates for adjustment.”
“The possibility” of an effect justifying future research is not the same as concluding that there is an effect. This however, does not stop people like Menta and other pseudo-scientific proponents from making up their minds before research concludes that fluoride is harmful. Never mind that several major reviews of studies show that 'Fluoridation of drinking water remains the most effective and socially equitable means of achieving community-wide exposure to the caries prevention effects of fluoride.'
