Air pollution may reprogram sperm DNA, raising fertility concerns
TL;DR Summary
A large fertility study following over 2,000 men links exposure to outdoor pollutants (notably ozone and nitrogen dioxide) during sperm development to subtle DNA methylation changes in sperm that regulate gene activity. Researchers identified 39 pollution-associated DNA changes, including in the GNAS gene, suggesting a potential mechanism by which air pollution could affect fertility. However, a direct link to infertility has not been proven, and further work is needed to confirm clinical significance.
- Air pollution linked to DNA changes in sperm, research shows The Guardian
- Air pollution may alter how sperm genes function, major fertility study finds Medical Xpress
- How air pollution may affect fertility Courthouse News
- Air pollution may be changing sperm Popular Science
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