Folic acid, a B vitamin, may lower autism risk and ease features of the condition, according to findings from five unrelated studies published over the past few months.
Three of the studies suggest that prenatal supplements of folic acid offset autism risk associated with in utero exposure to epilepsy drugs or toxic chemicals1,2,3. The supplements are also known to prevent birth defects.
Another study found that people with autism and their immediate family members are more likely than controls to carry immune molecules that could block folate’s passage into the brain4.
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