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In stratification analysis by frequency, adolescents who were exposed to secondhand smoke more days in a week had a higher likelihood of anxiety with a linear trend in males (1-3 days, OR=1.11

But they contain much lower levels of certain carcinogens, and a recent clinical trial showed that vapes were as effective as Chantix at helping smokers leave cigarettes behind

However, a study funded by the National Institute on Drug Abuse found that even heavy marijuana smokers did not have an increased risk of developing lung cancer: We hypothesized that there would be a positive association between marijuana use and lung cancer, and that the association would be more positive with heavier use

Written and directed by Daniel Farrands, Duff served as an executive producer on the film