Can indoor air pollution during pregnancy increase autism risk?
Possibly. A 2025 study linked maternal exposure to indoor and outdoor air pollution during pregnancy to higher autism spectrum disorder risk in children.
What's actually in it
Indoor air pollution comes from cooking (gas stoves), cleaning products, candles, air fresheners, and building materials. Pregnant women spend most of their time indoors, making indoor air quality a major exposure pathway. Fine particulate matter and volatile chemicals can cross the placenta.
What the research says
A 2025 study in Environ Res found that maternal exposure to indoor and outdoor air pollution during pregnancy was linked to increased autism spectrum disorder risk in offspring. The indoor component was a meaningful contributor beyond just outdoor pollution.
Improve indoor air quality by using range hoods when cooking, choosing fragrance-free products, running HEPA air purifiers, and avoiding gas stoves if possible.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Maternal exposure to indoor and outdoor air pollution during pregnancy increases offspring risk of autism spectrum disorder. | Environ Res | 2025 |
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