How Is Lung Cancer Caused

A type of lung cancer called mesothelioma is almost always caused by exposure to. Breathing in other hazardous substances especially over a long period of time can also cause lung cancer.

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Most people diagnosed with lung cancer are 65 or older.

How is lung cancer caused. Asbestos related lung cancer typically takes between 15 and 35 years to develop from initial exposure to onset of symptoms. Most cases of lung cancer are caused by smoking although people who have never smoked can also develop the condition. According to the national heart lung and blood institute it takes 10 to 40 years or more for asbestos fibers to develop into cancer or other pulmonary conditions.

Lung cancer is caused by a mutation in your dna. At first your body may be able to repair this damage. The average age of people when diagnosed is about 70.

Doctors believe smoking causes lung cancer by damaging the cells that line the lungs. In this way your body is constantly renewing itself. Over many years the fibers can cause enough genetic and cellular damage to cause lung cells to turn cancerous.

A very small number of people diagnosed are younger than 45. Lung cancer in non smokers can be caused by exposure to radon secondhand smoke air pollution or other factors. Lung cancer mainly occurs in older people.

Smoking cigarettes is the single biggest risk factor for lung cancer. It s responsible for more than 70 of cases. When you inhale cigarette smoke which is full of cancer causing substances carcinogens changes in the lung tissue begin almost immediately.

What causes lung cancer. Workplace exposures to asbestos diesel exhaust or certain other chemicals can also cause lung cancers in some people who don t smoke. For many people it seems unlikely that something they inhaled several decades before caused the lung cancer they now face but this is exactly what happened.

When cells reproduce they divide and replicate forming identical cells. A small portion of lung cancers occur in people with no known risk factors for the disease. Smoking the incidence of lung cancer is strongly correlated with cigarette smoking with about 90 of lung cancers arising as a result of tobacco use.

Lung cancer is by far the leading cause of cancer death among both men and women making up almost 25 of all cancer deaths. When a person inhales asbestos microscopic fibers can become lodged in their lung tissue.

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