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Do Smokers' Lungs Heal After They Quit?After a person quits smoking, the lungs can heal to a certain extent.
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Teen Pot Use Linked to Illegal Drug Use by Age 21, Study SuggestsA new study adds to evidence suggesting that marijuana really is a gateway drug for teens.
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Cigarettes, Alcohol & Pot: Why Some Young Smokers Combine DrugsThe findings of the new study could have implications for helping people quit smoking, the researchers said.
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There Are Nearly 1 Billion Smokers on EarthNearly 1 billion people around the world light up cigarettes every day, a new study finds.
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What the Bacteria in Your Mouth May Reveal About Your Cancer RiskThe bacteria in your mouth may be linked to your risk of certain cancers.
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Teen Brain on Pot: New Study Examines First ExposuresA new long-term study could show scientists how first exposures to marijuana affect the teenage brain.
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Why Do People Vape? Reasons Have ChangedThe reasons people use e-cigarettes are shifting, with fewer using them as a way to quit smoking, and more using them as to a way to boost their social image, a new study finds.
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Healthy Heart in Midlife May Lower Dementia Risk LaterKeeping your heart healthy could also benefit your brain — a new study suggests that people who have risk factors for heart disease in middle age are also at increased risk for dementia.
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E-Cigarette Smoking May Be Bad for Your HeartA new study finds that certain markers for heart disease risk are higher in e-cigarette users than in nonusers.
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