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At a minimum, an e-cigarette manufacturer must show that the flavor itself is safe, helps smokers switch completely from combustible cigarettes, and does not attract youth before a product is allowed to go to market

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Vaping is inhaling vapors that contain chemicals

A 2010 analysis found smoking increased Alzheimer's risk once studies funded by the tobacco industry (which had tended to report a protective effect) were excluded, [39] while a later pooled analysis of longitudinal cohorts across several countries found no significant association between smoking and dementia, including Alzheimer's disease specifically