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This indicates that e-cigarettes are not reducing as much harm as their supporters claim, said Dr

serriola , L

One participant assigned to receive nicotine-containing e-cigarettes experienced an exacerbation of chronic obstructive pulmonary disease, though it is unclear whether this was attributable to vaping

Smoking also is a known risk factor for 17 types of cancers, and research has shown that it negatively affects treatment and prognosis (Burke, Miller, Saad, & Abraham, 2009

While it is not completely risk-free, an e-cigarette doesnt contain tobacco leaves, which are the main source of tar, carcinogens, and other harmful substances