Smoking Gene May Reveal Why Some People Smoke More

From AJC: A “smoking gun” gene may play a role in how many cigarettes certain smokers puff each day.

Researchers from 50 medical institutions across the country analyzed genetic material of more than 32,000 African-American smokers and non-smokers to see if certain genes predicted when they began smoking, how many cigarettes they smoked, and how easily they were able to quit.

According to the new study, a variant in a nicotine receptor gene predicts about one extra cigarette smoked per day. This same general location has been implicated in smoking behavior among white Europeans.
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