Lung Cancer is forcibly connected with the incidence of cigarette smoking, with about 90% of lung cancers arises because of using tobacco. The number of cigarettes smoked with time increases the risk for lung cancer. This risk is referred to the pack which means years of smoking in words of Doctors.
The history refers to the packs of cigarettes smoked per day multiplied by the number of years smoked. Although, the risk of getting lung cancer with a history of 10 packs in a year. But those taking 30 packs in a year increase your chances of getting lung cancer.
Those who smoke 2 or more packs of cigarettes in a day, one in seven among them will die because of cancer. Even though the risk is higher as more you smoke as there is no safe level of disclosure to tobacco smoke. Although the risk is not high with cigarettes, lung cancer also increases with pipe and cigar smoking.
Someone who smokes one pack of cigarettes in a day has higher risks of suffering from lung cancer about 25 times higher than the pipe and cigar smokers have a risk of lung cancer.
The inhalation of tobacco smoke from other smokers while sharing living or working quarters also known as Passive smoking, also marks a well-known factor in the development of lung cancer.
Research has said that those non-smokers reside with smokers have an increase of 24% in the risk of development of lung cancer in comparison to non-smokers. In U.S. 3,000 deaths associated with lung cancer that is connected to passive smoking.
Prior History of Lung Cancer
The survivors of lung cancer have more chances of getting the development of lung cancer than the general people. Even smoking causes the superiority of lung cancers both in smokers as well as in people exposed to old smoke.
But the lung cancers also arises in the people who never smoked even in those who do not have extended disclosure to secondhand smoke.
It is believed by the Doctors that smoking causes lung cancer by damaging the lining of the cells present in the lungs. On inhaling the smoke coming from the cigarette which is full of carcinogens (cancer-causing substances), the changes in the tissues of lung begin immediately.
Firstly, your body may be able to mend this damage. But with each exposure, the normal cells in the lining of your lungs are getting damaged day by day.