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Maternal Health and Autism Risk: Most Links Are Genetic, Not Prenatal

Stylized illustration of a multi-generation family tree branching into cousin pairs, representing the 3-generation registry design used to separate inherited from in-utero genetic effects on autism risk.

For two decades, headlines have linked autism to maternal obesity, depression, anxiety, gestational diabetes, infection, autoimmune disease, and antidepressant use. The studies behind those headlines are well-replicated registry associations. A new design from the Aarhus University iPSYCH group offers the most careful answer yet to what they mean for an individual pregnancy. Most “maternal X …

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