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Centers for Disesase Control and Prevention

There are also TikTok videos that serve as informative guides for the uninitiated, explaining the functions of different herbs

Kenneth Warner, a professor emeritus of public health at the University of Michigan, said, "This study shows an increased probability of trying a cigarette if they've tried a vape, but I don't believe they establish a causal relationship." Warner also pointed out that the results don't quite mesh with findings from national studies that show the use of tobacco cigarettes has gone down for the past five years, and the use of e-cigarettes dropped in youth nationally in 2016

This supports hypothesis 3