Breath of Fresh Death

Breathing polluted air for even a short period of time can cause some genes to undergo reprogramming, which may affect a person's risk of developing cancer and other diseases, say Italian researchers.
Comparisons of blood DNA samples from healthy workers who were exposed to high levels of airborne particulates at a foundry near Milan revealed that after only three days of exposure, changes occurred in four genes that have been linked to tumor suppression, according to research presented Sunday at the International Conference of the American Thoracic Society, in San Diego.
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