Scientists have reviewed the literature and found more chemicals that might cause mental damage to children. Scare tactics by “chemicals” and “scientists”? In 2006 lead, methylmercury, polychlorinated biphenyls , arsenic , and toluene were identified as potentially harmful to the brain development of children. Now these scientists from Harvard School of Public Health and the Icahn School of Medicine have reviewed the literature and come up with manganese, fluoride, chlorpyrifos, dichlorodiphenyltrichloroethane, tetrachloroethylene, and polybrominated diphenyl ethers as chemicals of concern. “The research team acknowledges that there isn’t a causal connection between exposure to any single chemical and behavioral or neurological problems – it’s too challenging to isolate the effects of each chemical to come to such conclusions”.
Name chemicals and causal evidence is too hard? Lead use in contact with children has been reduced. Environmental mercury from anthropogenic sources has decreased since the mercury cell caustic process went out of use. PCB’s were widely used in transformers, carbonless paper and even some printing inks. PCB phaseouts began about 40 years ago. I suppose that you could go review environmental concentrations and potential for contact with the old and new list, but since the research team’s report is a literature review and naming chemicals, why go through the exercise.
I’m not sure this results in much more than a bit of fear mongering unless the scientists come up with some research showing the effects of these chemicals in the environment. I’d really bet that the exposure to most of these chemicals has been greater in the past than now.