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Smoking a pack a day for a year causes 150 mutations in lung cells Email newsletter News and blog updates Scientists have measured the catastrophic genetic damage caused by smoking in different organs of the body and identified several different mechanisms by which tobacco smoking causes mutations in DNA

A spokesman for Altria did not immediately have a comment for this story

The study found that participants who had used e-cigarettes in the past were 21 percent more likely to develop a respiratory disease, and those who were current e-cigarette users had a 43 percent increased risk

For products sold online, the agency also wants to heighten age verification requirements