Another clue in the mystery of autism

Thursday, January 19, 2012 - 15:30 in Health & Medicine

A study of discordant twins -- twins in which one has autism spectrum disorder and one doesn't -- finds the lower birth weight twins are more than three times as likely to have ASD than heavier twins. Though genetic effects are of major importance, say researchers, the study suggests a non-genetic influence associated with birth weight may contribute to development of ASD.

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