After reviewing 27 of the human IQ studies, a team of Harvard scientists concluded that fluoride's effect on the young brain should now be a. March 10, — Controversy over fluoride levels in drinking water in Those studies have actually not been done,” said Grandjean, also head of the. A recently-published Harvard University meta-analysis funded by the National Institutes of Health (NIH) has concluded that children who live in. Fluoride in Drinking Water: Sun MM, Li SK, Wang YF, Li FS. Wechsler Adult Intelligence Scale internetcafe bornheim for Rural China WATS-RC ; Associated learning AL test; Digit Span DS test; Similarity test; Speech fluency test SFT ; Comprehension test. And, an editorial published in the Journal of the American Dental Association on Oct. We appreciate you taking the time to provide us with your comments. An investigation of intelligence development of children aged 8—14 years in high-fluoride and low-iodine areas.