Cigarette Smoking is the most important cause of preventable morbidity and mortality in developed world. Its main chemical ingredient is NICOTINE which is highly addictive, raises the brain level of dopamine and produces withdrawal symptoms on discontinuation; Cigarettes are responsible for one in every five deaths in USA.
Still the smoking prevalence rates have been increasing among high school and college students. Smoking has the twice the risk of heart disease, ten times the risk of lung cancer and several times the risk of cancers of mouth, throat, esophagus, pancreas, kidney, urinary bladder, and cervix.
Smoking cessation lessens the risk of death of myocardial infarction in people with coronary artery disease.