The survey found that 66 percent of people reporting using e-cigs were also smoking cigarettes (telling me they were using e-cigs to get around smoking bans in workplaces, bars, etc.)
Oral problems Mouth sores, gingivitis, decay, foul breath, and even permanent tooth discoloration are all possible side effects
Konstantinos Farsalinos, a cardiologist at Onassis Cardiac Research Center in Athens, Greece, reports in his blog on a report by his research group, newly published in the International Journal of Environmental Research and Public Health, that shows that tobacco-derived toxins in the class of e-liquids known as Natural Extracts of Tobacco (NET) are orders of magnitude lower than the concentrations found in tobacco products, with nitrosamines 146 to 1447 times lower in e-liquids, and nitrates 1360 times lower
Japan also bans all nicotine e-juice while allowing heat-not-burn systems such as IQOS." Cigarettes are always legal