Fluoride Action Network


As an additional part of our investigation of an association between fluoride in drinking water and children’s intelligence in two villages of Sihong County, Jiangsu Province, China, we have now determined blood lead levels of children in that study.

Blood samples (80 ?L) were collected on June 18 and 19, 2003 from the index finger of 71 randomly selected 8 to 13 year-old children in the high fluoride village of Wamiao and 67 children of the same ages in the low fluoride village of Xinhuai. The samples were preserved in clean plastic centrifuge tubes containing 0.64 mL of Triton X-100. Blood lead was measured within one week by atomic absorption spectrophotometry.

The results, as summarized in the table below, show there is essentially no difference between the two villages in blood lead concentrations of the children… See pdf for full Letter

SEE the IQ study by these authors: Effect of fluoride in drinking water on children’s intelligence