Fluoridation, the process of adding fluoride to public water supplies in an effort to prevent cavities, has courted controversy since its introduction in the US during the 1940s. Now, the prestigious medical journal The Lancet has published a report that supports what opponents of fluoridehave long been arguing. In essence, the journal article pointed to the fact that fluoride is a developmental neurotoxin.
Fluoride: A Dangerous Neurotoxin
The peer-reviewed report, which builds off a 2006 study that looked at five potential neurotoxins, now adds fluoride to the list of harmful environmental pollutants.  In fact, fluoride is listed alongside such well-known hazards as lead, mercury, and arsenic. Developmental neurotoxins at high enough levels can cause developmental disorders and are particularly hazardous to fetuses and young children whose brains are still developing. Dr. Philippe Grandjean and Dr. Philip J. Landrigan, the authors of the study, are advocating for a global prevention strategy to control what they call a “pandemic of developmental neurotoxicity.” They also believe that there are still undiscovered industrial neurotoxins and state that chemicals that have not been tested for neurotoxicity should not automatically be presumed safe for brain development.
In addition to the fluoride warnings published in the journal, a recent meta-analysis from Harvard found a correlation between fluoridated water and low IQ scores in children who grew up in the most fluoridated areas. Other studies have linked fluoridation to certain types of cancer.