Are e-cigarettes a safe alternative to smoking?

An electronic cigarette is a battery-operated device that emits doses of vaporized nicotine, or non-nicotine solutions, for the user to inhale. It aims to provide a similar sensation to inhaling tobacco smoke, without the smoke.
Also known as e-cigarettes, e-cigs, electronic nicotine delivery systems, vaporizer cigarettes, and vape pens, they are marketed as a way to stop or cut down on smoking.
E-cigarettes have been taken up by millions around the world since they first appeared on the Chinese market in 2004. In 2016, 3.2 percent of adults in the United States were using them.
E-cigarettes aim to resemble cigarettes, but without burning tobacco. They are sold as aids to reduce or quit smoking, and some people find them helpful for this.
Fast facts on e-cigarettes:
E-cigarettes aim to resemble cigarettes, but without burning tobacco.
They are sold as aids to reduce or quit smoking, and some people find them helpful for this.
However, research shows that they may have a negative impact on health.

Benefits

The e-cigarette may be less hazardous than tobacco for existing smokers, but it appears to bring dangers of its own.
E-cigarettes claim to bypass many of the health risks of tobacco smoking, and to offer a more healthful alternative to cigarettes and other conventional forms of nicotine intake.
Some studies have found that using e-cigarettes can help some smokers quit.
Others suggest they offer “modest” benefits for those who want to quit smoking, but “good potential” for those who are cutting down.
The Centers for Disease Control and Prevention (CDC) conclude that e-cigarettes can benefit adult smokers who are not pregnant, as long as they completely replace any other nicotine or tobacco products.
However, in 2015, 58.8 percent of adult users continued to smoke regular cigarettes. They did not use vaping as a complete substitute for tobacco.
The CDC add that vaping is not suitable:
for young people
for those who have never smoked before
during pregnancy
There is an argument that it is better for young people to start vaping instead of smoking.
Marketing the activity as cool and safe, and offering a variety of flavors, manufacturers are keen to attract teens and adolescents.
However, vaping is probably not risk-free, and in 2016, the Surgeon General declared e-cigarette use a “significant public health concern.”

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