Chemicals may be eroding child IQs: Disputed study
PARIS (AFP) - Two public health experts warned on Saturday about the stunting effects that a wide array of industrial chemicals, including toothpaste ingredient fluoride, may be having on child brain development, in a report some called alarmist.
The pair, Mr Philippe Grandjean of the Harvard School of Public Health and Mr Philip Landrigan from New York's Icahn School of Medicine, said the number of chemicals known to hinder child brain development have doubled from six in 2006 to 12 today.
In a 2006 review, the pair had identified ethanol, lead, methylmercury, polychlorinated biphenyls, arsenic and toluene as "developmental neurotoxicants".
Since then, studies have shown another six to be dangerous: manganese, fluoride, chlorpyrifos, dichlorodiphenyltrichloroethane, tetrachloroethylene and polybrominated diphenyl ethers, said the new review.