1, cigar contains a certain amount of nicotine. If inhaled for a long time or excessively, it may cause throat discomfort, and in severe cases it may lead to lung diseases such as lung cancer.
2. Moreover, when smoking cigars, cigarettes often linger in the mouth and do not inhale cigar smoke to reach the lungs, so the prevalence rate of oral cancer, tongue cancer or throat cancer of cigar smokers will be higher.
3. When smoking cigars, several kinds of nitrosamines peculiar to tobacco will be emitted, and these chemicals have been proved to be highly carcinogenic. In addition, cigar wrapping paper has poor air permeability and can't burn completely. This will lead to higher concentrations of nitrogen oxides, ammonia, carbon monoxide and tar during combustion, which is harmful to human body.
Moreover, both cigar smokers and cigarette smokers are more likely to suffer from the above diseases than non-smokers. Therefore, it is recommended not to smoke cigars or cigarettes excessively or for a long time.
The above contents refer to Baidu Encyclopedia-Cigar.