Lung diseases the presence of certain diseases of the lung

Lung diseases the presence of certain diseases of the lung, notably chronic obstructive disease pulmonary, is associated with a slightly increased risk (four to six times more than the risk of a nonsmoker) for developing lung cancer even after excluding the effects of smoking.

History of lung cancer lung cancer survivors has an increased risk of developing a second tumor.
 Survivors of lung non-small cell lung cancer have an excess risk of 1% to 2% per year for developing a second lung cancer.

 In survivors of small cell lung cancer the risk of a second cancer reaches 6% per year.
Air Pollution The pollution from factories and vehicles may increase the risk of developing lung cancer.
Up to 1% of lung cancer deaths are attributed to pollution, and experts believe that prolonged exposure to polluted air can be linked to a similar risk to that of passive smoking.

 Prevention of lung cancer Lung cancer can often be associated to known risk factors.
Many factors can be changed, but not all can be avoided.

 Tobacco: studies show that smoking tobacco in any form is the main cause of lung cancer.
People who quit smoking and never return reduce your risk of developing lung cancer or see a return cancer.
There are many products such as chewing gum, nicotine patches and sprays that can help a person quit smoking. Never smoking lowers the risk of dying from lung cancer. The tobacco inhaled by passive smoking also causes cancer