There are some reports that electronic cigarettes can cause some health problems in the lungs.
Electronic cigarettes, or electronic nicotine delivery systems, entered the U.S. market in the mid-2000s. They quickly became popular among smokers and non-smokers and have become a very popular tobacco substitute. Electronic cigarettes effectively deliver nicotine in the form of vapor composed of carrier solvents propylene glycol (PG) and vegetable glycerin (VG), thus avoiding the need to burn tobacco. At the same time, various flavors of fragrance are added to electronic cigarettes to enhance the taste experience, which is also the reason why they are more popular.
Even though it is generally believed that electronic cigarette products are safer than tobacco, the potential health problems of electronic cigarette terminals have begun to cause widespread discussion. For example, in the aerosols produced by some electronic cigarette devices, the content of heavy metals and carbonyls (such as formaldehyde and acrolein) can be detected, and harmful diacetyl has been detected in some flavorings. There are also reports that it can cause some health problems in the lungs.
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