The exponetial growth in popularity of electronic cigarettes in the world markets intensifies the debate about their health effects. The smoking of traditional tabacoo products is a factor associated with the endothelium damage and progression of atherosclerosis. The elimination of the combustion process in electronic cigarettes allows to conclude that they are less harmful to a vascular endothelium than traditional tobacco products. E-cigarette aerosol contains many compounds that have an influence on initiation and progression of atherosclerosis. Nicotine protherogenic action is not fully explained. On one hand, nicotine modifies metabolic pathways leading to atherosclerosis, whereas epidemiological studies do not show an increased risk of cardiovascular disease in the population using nicotine replacement therapy or snuff. Acrolein, formaldehyde and the ultrafine particles generated during e-liquid heating have an impact on initiation and progression of atherosclerosis, but their level is lower than that of tobacco smoke. In order to assess accurately the longterm effects of e-cigarettes, it is necessary to conduct epidemiological studies measuring the effects of using e-cigarettes. It is claimed that the use of electronic cigarettes has a potential impact on the development of atherosclerosis, but is significantly lower than that of traditional cigarettes.
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