Eventually, they reach the number of cigarettes they need to smoke to keep them satisfied. This is how smokers get hooked. It becomes a vicious cycle. They need more cigarettes to give them that good feeling. They think smoking helps relieve stress when really it is the desire for cigarettes that creates most of the stress.
Smoking is also stressful on the body.
Cigarette smoke contains over 4,000 chemicals. Many of these are known to cause cancer of the lung, mouth, throat, bladder, kidney and stomach. Once diagnosed with lung cancer a person has only a 10 percent chance of surviving more than two years. Ulcers are more common and less likely to heal in smokers than in non-smokers. Also, smoking causes 80-90 percent of all emphysema and chronic bronchitis.