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Professor Adam Leventhal, director of the USC Institute for Addiction Science, explained it is important to note frequency of vaping when predicting whether young people are likely to become long-term e-cigarette users

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No apparent differences in the proportion of much more/less use were reported amongst cannabis users (much more: 14% vs

For some people who often feel scared of being hurt, this person gives the reassurance and to help them let their guard down