The "Harvard review (2012) of 27 studies"  was not a "Harvard Review" and it provided no valid evidence of anything, whatsoever.  This is a reference to a 2011 review of 27 Chinese studies dug out of obscure Chinese journals by researchers Phillippe Grandjean and Anna Choi.  These studies were of the effects of high levels of fluoride (as high as 11.5 ppm) in the well-water of various Chinese, Mongolian, and Iranian villages.

to be continued........

Steven D. Slott, DDS