Lung cancer causes, prevention and symptoms

Lung cancer causes, prevention, symptoms
Lung Cancer
What is lung cancer? Although lung cancer is the leading cause of cancer death in the United States in both men and women, it is also one of the cancers most easy to prevent.
At least four out of five cases are linked to smoking, and the cause-and-effect is extensively documented.
 During the 1920s, many men started smoking cigarettes, possibly in response to the increase in product advertisements.

 Twenty years later, the rate of lung cancer in men increased rapidly. In the 1940s, significantly more women became smokers.

 Twenty years later, a dramatic increase in new cases of lung cancer, this time among women
 Lung tumors often begin in the spongy and gray walls of the bronchi, routes tubular shaped areas branches of the lungs.

Over 20 types of malignant tumors that begin in the lung itself, primary lung cancer were identified.
The main types are small cell tumors and tumors of non-small cell. The most common larger varieties are divided into squalors cell carcinoma, adenoma carcinoma and large cell carcinoma.
What causes lung cancer?

Smoke the incidence of lung cancer is strongly linked to smoking, with almost 90% of cancer cases linked tobacco consumption. The risk of lung cancer increases with the amount of cigarettes smoked over time; doctors refer to this risk of smoking history with packs / year unit.