As we all know, there are six words printed on the cigarette box, “Smoking is hazardous to health” Even so, there are still a large number of smokers in our country. Cigarettes as a pastime, after tea, at any time you can light up a, gulp. Evidence shows that the longer you smoke, the more addicted you are, and the more difficult it is to quit, as the nicotine contained in cigarettes paralyzes the nerves and makes you dependent. With the changes in society, cigarette brands and types are also constantly innovating. Old smokers who often buy different kinds of cigarettes will surely notice a phenomenon that more and more thin-stemmed cigarettes have appeared on the market. Why would there be such a thin rod of cigarettes Because smokers are also a group of women, they are choosing cigarettes, compared to men, will pay more attention to the shape of the cigarettes, the more delicate, the more trendy their desire to buy will be stronger, which is one of the reasons why there are more and more thin rod of cigarettes. The PM2.5 of thick and thin cigarettes is different According to some existing experiments, we can get some data, the experimental team on the PM2.5 of thick and thin cigarettes to do a comparison, the results found that the thick cigarettes in the combustion process of the smoke, resulting in a very high concentration of PM2.5, once reached a level of 58.9ug per square meter. Next, the experimental team repeated the experiment with fine cigarettes using the controlled variable method, and found that the PM2.5 concentration produced by fine cigarettes during combustion reached 60ug per square meter. Therefore, statistically speaking, thin-stemmed cigarettes produce higher PM2.5 when burning, which may be more harmful to the human body. Therefore, we cannot conclude that thick-stemmed cigarettes are more harmful to the body than thin-stemmed cigarettes based on subjective experience alone. The more expensive the cigarettes, the less harmful they are? First of all, this statement is not true. Smoking is harmful to health, this is something everyone knows, this conclusion will not change because of the decrease in the price of cigarettes, so to speak, no matter you are smoking a pack of 10 dollars of cigarettes, or a pack of 1000 cigarettes, are harmful to the body, and even more unlikely to produce benefits because of the expensive. This is because the harm of cigarettes mainly from the tobacco in the nicotine, tar and other harmful substances, these harmful substances will not be because the price of cigarettes become more expensive will be reduced, so we must no longer hold “the more expensive the smoke, the less harm” idea.