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A total of 193 were excluded as they had recently used another tobacco or smoking cessation product and 57 had incomplete data on their prior cigarette use, leaving a final sample of 3,609 who were exclusive current e-cig users and ex-cigarette smokers
Cell types, including human fibroblasts, neutrophils, airway epithelial cells, human embryonic stem cells, and mouse neural stem cells, demonstrate morphological changes, even displaying cytotoxicity in stem cells and fibroblasts when exposed to undiluted e-liquid and flavor aldehydes, respectively (Sisson, 2007)
Bad Breath The chemicals used in tobacco products also lead to bad breath because they encourage the growth of bacteria