How about old smokers smoking both cigarettes and electronic cigarettes?

Research has proved that the possibility of respiratory symptoms caused by mixed smoking of cigarettes and electronic cigarettes is nearly twice as high as that of pure smokers, and slightly more than 1.2 times as high as that of pure smokers.
In addition, according to this study recently published in the American Journal of Respiratory and Critical Care Medicine, the risk of new respiratory symptoms among people who use electronic cigarettes is not significantly higher than those who do not smoke or smoke.
Dr. Nancy Rigotti, senior author of the study and director of the Tobacco Research and Treatment Center, said: “This study helps to determine how best to use electronic cigarettes to reduce the harm caused by smoking.” The use of electronic cigarettes alone will not increase the risk of new respiratory symptoms, while the use of two products (electronic cigarettes and cigarettes) will increase. ”
In conclusion, electronic cigarettes should not be mixed with cigarettes, which is more harmful. For the sake of everyone’s health, it is better to use electronic cigarettes only to replace cigarettes, so as to maximize the effect of reducing harm. Of course, it is best if you can completely quit smoking.