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orange = nondaily smoking) Substantial increases in e-cigarette use (shades of green for daily and nondaily vaping) Dual use (shades of blue) had a slight U-shaped curve, but was fairly uncommon throughout this period (~10-15% of people who use either product)

While there may be a role for vaping as a smoking cessation aid, systematic reviews outline evidence of the harms of vaping, particularly among people who do not smoke

Kids are imitating parents

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In 1998, California became the first state to ban smoking in bars, something that still has not been implemented in all fifty US states