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Hot, humid pregnancy harms child growth more than heat alone — Level B2 — A man riding a bike down a street next to a woman
20 Dec 2025

Hot, humid pregnancy harms child growth more than heat alone

New research in Science Advances shows that hot, humid conditions during pregnancy damage child growth far more than high temperature by itself. The study used a combined metric (WBGT) in South Asia and found much larger prenatal risks when humidity is included.

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