BobG
Science Advisor
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What does that mean for bald people?Intelligent people have more zinc and copper in their hair.
Actually, this one is probably true when analyzing groups. Nutrition during childhood will affect development, including brain and neurological development. The statement is about as meaningful as saying people with lead or cadmium in their hair are less intelligent. True, but it's the toxic chemicals during childhood that reduced brain capability, not an indication that less intelligent people produce more lead and cadmium.