Smoking Leaves Lasting Imprint on Human DNA

According to a new research, smoking cigarettes can leave a lasting imprint on DNA, altering more than 7,000 genes. This may lead to the development of smoking-related diseases.lasting imprint

Having analyzed blood samples taken from nearly 16,000 people in 16 previous studies, the scientists also found that in people who stopped smoking, most genes "recovered" within 5 years after they quit this unhealthy habit.

Dr. Stephanie London, a study author and a chief of the epidemiology branch of the U.S. National Institute of Environmental Health Sciences, says: "Although this emphasizes the long-term residual effects of smoking, the good news is the sooner you can stop smoking, the better off you are."

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