Story perspectives

Nighttime Heat Linked to Higher Autism Risk in Pregnancy

2/13/2026

Summary

Story summary

Tulane University researchers found a link between elevated nighttime temperatures during pregnancy and autism risk in children.
The analysis covered nearly 295,000 mother-child pairs in Southern California from 2001 to 2014.
Researchers found a 15% higher autism risk in weeks 1–10 and a 13% rise in weeks 30–37 of pregnancy with warmer nights.
The study notes correlation and calls for more research into biological mechanisms and environmental factors in prenatal care.

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Story summary

Tulane University researchers found a link between elevated nighttime temperatures during pregnancy and autism risk in children.
The analysis covered nearly 295,000 mother-child pairs in Southern California from 2001 to 2014.
Researchers found a 15% higher autism risk in weeks 1–10 and a 13% rise in weeks 30–37 of pregnancy with warmer nights.
The study notes correlation and calls for more research into biological mechanisms and environmental factors in prenatal care.