second most common cancer Lung Cancer

Lung cancer is the second most common cancer and the leading cause of cancer deaths for men and women.
Lung cancer represents 15% of all cancer diagnoses and 28% of all cancer deaths. For men, death rates have declined consistently since 1994 at a rate of about 2% each year. The death rates for women with lung cancer have stabilized since 2003 after increasing for several decades. For unclear reasons, black men have the highest incidence and the lowest survival rates of lung cancer.
The following factors may raise a person’s risk of developing lung cancer:
Tobacco. Most lung cancer occurs in people who smoke or in those who have smoked in the past. Tobacco smoke damages cells in the lungs, causing the cells to grow abnormally. The risk that smoking will lead to cancer is higher for people who smoke heavily and/or for a long time. Regular exposure to smoke from someone else’s cigarettes, cigars, or pipes (called environmental or “secondhand” tobacco smoke) can increase a person’s risk of lung cancer, even if that person does not smoke.
Asbestos. These are hair-like crystals found in many types of rock and are often used as fireproof insulation in buildings. When asbestos fibers are inhaled, they can irritate the lung. Many studies show that the combination of smoking and asbestos exposure is particularly hazardous. People who work with asbestos in a job (such as shipbuilding, asbestos mining, insulation, or automotive brake repair) and smoke have a higher risk of developing lung cancer. Using protective breathing equipment reduces this risk.
Radon. This is an invisible, odorless gas naturally released by some soil and rocks. Exposure to radon has been associated with an increased risk of some types of cancer, including lung cancer. Most hardware stores have kits that test home radon levels, and basements can be ventilated to reduce radon exposure.

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