While it may be that a great percentage of the world’s population derives a certain pleasure from cigarettes, it must be noted that smokers’ lungs are the most—for lack of a better word—destroyed among the entire human species. The concept is not difficult to grasp, really: smoke (whether from cars or as a result of production processes) contains several toxins which cause the lungs to deteriorate, and smoking is no less than inviting all those toxins into one’s lungs.
A non-smoker’s lungs is healthily pink, while it has been completely documented that their unhealthier counterparts come out dark red, brown, or even black spots. Smoking also causes lungs to exert more effort in certain strenuous activities. Climbing a flight of stairs will most certainly prove to be more difficult for the smoker. The endgame: smokers have to catch their breath quite a bit more often.
Smoker’s lungs are also polluted by the tar that comes from cigars and cigarettes. This tar gets stuck in the bronchial tubes thus causing them to get clogged. The lungs, however, try to rid the bronchial tubes of tar by stimulating coughs, although nicotine is the main problem. It upsets the delicate balance of gas exchange. The now-constricted blood cells have trouble picking up and dropping off carbon dioxide and oxygen respectively.
These are but a few of the effects that the habit has on the smoker’s lungs. What one must understand, therefore, is the fact that smoking—no matter how pleasurable it is once the person’s mind and body are addicted to it—has never been an actual necessity as compared to food, water, and physical activity. It is usually born of a social construct which has severe biological consequences, particularly on the smoker’s lungs. While kicking the habit is sure to be difficult, its harmful effects on the smoker’s lungs have been studied fervently by scientists and researchers, making the threat more real than it was about 50 years ago.