Is e-cigarette harmful to humans? Which hazard is greater than ordinary cigarettes?

Question

Accepted Answer

The biggest difference between e-cigarettes and ordinary cigarettes is that e-cigarettes can still swallow and squirt without igniting, and do not produce tar, carbon monoxide and other harmful gases and heavy metals like cigarettes. The key to e-cigarettes is that the smoke oil is good or bad. Be sure to buy regular manufacturers' products, including e-cigarettes. The main components of e-cigarette oil are water, propylene glycol (PG), vegetable glycerin (VG), nicotine and food-grade flavors, which do not produce second-hand smoke. Propylene glycol is not only a legal skin care moisturizer and antibacterial agent, but also a legal food additive. The US Food and Drug Administration (FDA) also approves the use of propylene glycol as a food additive. Vegetable glycerin is also extracted from plants. As for nicotine, everyone knows that cigarettes are also nicotine-containing, and the concentration of nicotine in e-cigarettes is optional, mainly 0Mg/L (excluding nicotine), 6Mg/L, 12Mg/L, 18Mg/L, 24Mg. /L, 36Mg/L. The fragrance doesn't have to be said, now which foods are not flavored. So in general, e-cigarettes are much smaller than ordinary affirmative injuries, but it is certainly not realistic to say that there is no harm at all.