health risk of smoking cigarettes Cigarette | Smoking and Tobacco Use Smoking Risks and Heart Health

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Researchers found adolescents who smoked the most and children who started smoking at younger ages were more likely to be daily smokers in their 20s and less likely to quit smoking by their 40s

This variation might indicate a cumulative effect of smoking, possibly through oxidative stress

It is still to be determined what the long-term effects of e-cigarettes will be on adults and teens