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No Nicotine: Hemp cigarettes don't have nicotine, which is the thing that makes people want more cigarettes

Research gives us useful dose-response data: Source: Su et al., Archives of Dermatology, 2007 (adjusted for age and family history) Heavy smokers have roughly double the risk of moderate-to-severe androgenetic alopecia

Teenagers are becoming regular users, and the proportion of regular users is increasing, Gottlieb said in September

Now, along with the exponential growth in recreational use by children and young adults, there is increasing evidence of harm

Tim Maughan visited the lab where this surprising research is emerging