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Study: Intense Wildfire Smoke Ups Autism Odds
18 Feb
Summary
- Wildfire smoke exposure during pregnancy linked to higher autism diagnoses.
- Intense smoke exposure saw a 6% increase in autism diagnosis likelihood.
- Rural areas saw a 50% autism jump with heavy smoke exposure.
Wildfire smoke, particularly intense exposure during pregnancy, has been linked to a heightened risk of autism diagnoses in children, according to a large-scale study of California births. Researchers analyzed over 8.6 million births between 2001 and 2019, comparing them with subsequent autism diagnoses.
The study found that exposure to the most severe smoke levels, in the top 10% of intensity, correlated with a 6% increase in the likelihood of an autism diagnosis for the child. This association was particularly strong in areas with low background pollution, where intense smoke exposure resulted in a 50% jump in autism rates.
Furthermore, the composition of the smoke appears to matter. Fires that burned through both forests and neighborhoods posed a greater risk, possibly due to the release of more toxic chemicals from burning homes and electronics. While the research shows a strong association, it emphasizes that smoke exposure is a significant environmental stressor with potential neurodevelopmental impacts.
The findings underscore the urgent need for enhanced public health measures. These could include improved indoor air filtration systems and designated clean-air shelters to protect vulnerable communities from the health risks associated with increasingly frequent and severe wildfire smoke.
