As an American Heart Association review on e-cigarettes states: In general, the health effects of e-cigarettes have not been well studied, and the potential harm incurred by long-term use of these devices remains completely unknown. Based on the science so far, short-term exposure to e-cigarettes doesnt appear to carry serious and immediate health effects
Additionally, the confounding effects of previous tobacco use remain a limitation that was not controlled in this study
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Parliament passes plain tobacco packaging law, regulates vaping Second Opinion: Canada's fight with Big Tobacco is back on At the time, the industry argued that taxes were making cigarettes too expensive, forcing smokers onto the black market to buy cheaper cigarettes a contraband supply which the industry itself helped create
Tests on teenagers show that those who smoke tobacco-based cigarettes as well have the highest levels of these chemicals in their bodies, but those who vape e-cigarettes also have higher levels of the cancer-causing chemicals than nonsmokers do, the team at the University of California, San Francisco, found