Why are cases of lung cancer more in smokers than in non-smokers
Dear student
Cigarette smoke consists of many cancer causing agents{Carcinogens}. When smokers smoke a cigarette they inhale the smoke directly , which destroys the tissue lining of the lung. The smoke of the cigarette contains tobacco smoke and around 60 chemicals which can cause cancer. So it is the result of this inhaling of the smoke that the lining of the lung ruptures and a tumour develops which causes cancer in smokers.
Non-smokers have a less chance of developing cancer because they inhale the smoke of the cigarette indirectly. However if some tobacco containing products are eaten by the no-smokers, they can also have cancer.
Regards
Cigarette smoke consists of many cancer causing agents{Carcinogens}. When smokers smoke a cigarette they inhale the smoke directly , which destroys the tissue lining of the lung. The smoke of the cigarette contains tobacco smoke and around 60 chemicals which can cause cancer. So it is the result of this inhaling of the smoke that the lining of the lung ruptures and a tumour develops which causes cancer in smokers.
Non-smokers have a less chance of developing cancer because they inhale the smoke of the cigarette indirectly. However if some tobacco containing products are eaten by the no-smokers, they can also have cancer.
Regards