Lung Cancer Causes  

Lung cancer occurs when there is an uncontrolled cell growth in the lung tissue. The main factor that can lead to this malignant cellular grow is smoking. Cigarette smoke is the major cause of lung cancer, responsible for nearly 90% of cases. If you smoke, you have 25 percent more chance to have lung cancer than non-smokers. Younger you start smoking the higher your risk of being a lung cancer victim. In addition, the number of cigarette you smoke each day has also an impact on the occurrence of the malignancy in your lungs; more cigarettes you smoke daily, more likely you will develop lung cancer.  

Some smokers say that they smoke for years, they are never sick. Those people are dead wrong. Lung cancer can take many years to manifest symptoms; it does not mean you are not a victim. Cigarette smoking continues its adverse effects in the lung tissue slowly and asymptomatically. When symptoms finally emerge, the damage is often irreparable. In fact, in some people, the cancer may have already invaded other organs before it develops symptoms. In addition, quitting smoking a few years ago does not guarantee you will not develop lung cancer. About 50% of all lung cancers occur in people who have already quit smoking, according to the National Lung Cancer Partnership.     

Second hand smokers are not exempted. If you are constantly exposed to cigarette smoke, you run a great risk of having lung cancer. If your spouse or people with whom you are frequently in contact smoke, do your best to protect yourself; otherwise, you have the same risk of developing lung cancer.  

            Statistics                                                              Risk Factors