An electronic cigarette, also known as an e-cigarette, vapor cigarette or an e-cig, is an electrical inhaler that vaporizes a propylene glycol- or glycerin- or polyethylene glycol-based liquid solution into an aerosol mist, simulating the act of tobacco smoking.It is often marketed as a smoking cessation aid or tobacco replacement. Health Concern
Proponents of electronic cigarettes often claim tha
t electronic cigarettes deliver the experience of smoking and greatly minimize the smells and health risks associated with tobacco smoke.[16][17] The base liquids including propylene glycol(PG), vegetable glycerin(VG), and polyethylene glycol 400(PEG400) have been widely used as a food additive, as a base solution for personal care products such as toothpaste, and in medical devices such as asthma inhalers. However, the health effects of inhaling nicotine vapor into lungs have been a subject of uncertainty and no standard GMP procedures have been applied to the production of e-juice. The health effects of the exhaled nicotine and other substances present in the vaporous "second-hand smoke" and "third-hand smoke" is also the subject of uncertainty
