If you have heavy particulate matter exposure during pregnancy, your baby could be born with 13.2% shorter telomeres. This translates into a shorter life expectancy.

According to the study of 641 newborns, those whose mothers were exposed to higher levels of certain types of air pollution (so-called "particulate matter" from things like car emissions and burning of residential heating fuels), were born with shorter telomeres—8.8% shorter in their cord blood cells and 13.2% shorter in their placenta cells—than those whose mothers were exposed to less pollution. The effect was strongest when the moms were exposed during the second trimester.

Air Pollution May Make Babies' Cells Age Faster

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