On the other hand it is a deadly poison and when taken in large doses can lead to death. It is of prime importance to take the issue seriously and help smokers get rid of their smoking habits. This requires discipline and dedication from the smokers and everyone around him. The smoker must be convinced that quitting is the only option to avoid injuring his health and those around him.
Cigarette smoking involves inhaling nicotine a tobacco extract. This is directly absorbed by lungs. The harmful effect of nicotine on lungs is the high risk of contracting lung cancer. 90% of all the cases of lung cancer are caused due to cigarette smoking. This is because contains carcinogenic factors. The risk of death due to lung cancer is high and is coupled with huge amount of suffering for the patient for long time. The damage to the respiratory system is largely irreversible if smoking is continued for large periods of time. The oxidative stress generated by smoking mutates DNA and promotes atherosclerosis. The long term injury to lungs can be lethal if the smoker does not quit. In addition to lung cancer smoking increases the risk of contracting oral cancer, chronic bronchitis, asthma, and degeneration of all organs involved in respiratory system. The person often feels tired and fatigued. ...Show more