is vaping less harmful than cigarettes The Benefits of Compared to Smoking E-cigarettes and cancer: new report
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[DOI] [PubMed] [Google Scholar] 264.Markowitz S

The reported active ingredients in the e-liquid used by patients is summarized in Table 3

In fact, when exposed to water and sunlight, a modern filter completely decomposes in 5-7 years

(Source) Nausea is less prevalent among quitters who transition to e-cigarettes, at 31.3% versus 37.9% who completely quit nicotine