Lung cancer is a disease which affects the human lungs. It often results from some abnormalities in the cells of the human body. When disruptions occur in the normal process of cell division, abnormal cell growth occurs, and often this abnormal growth may develop into tumors.
There are two types of tumors, malignant tumors and benign tumors. Malignant tumors are the type of tumors which causes cancer, because they have the potential to multiply and grow further inside the body thereby spreading to other parts of the body through transmission via the blood stream. Benign tumors do not spread to other parts of the body and hence could be removed from the body.
What are the causes of Lung Cancer
Cigarette smoking causes over 90% of lung cancer cases resulting from smoking cases. Increased level of smoking also facilitates the development of lung cancer. Studies and published reports illustrates that among those who smoke about 2 packs of cigarette per day, one out of seven would die of lung cancer. Non smokers who inhale cigarette smoke are also at risk of developing lung cancer. Passive smoking which refers to inhalation of second hand smoke causes an estimated 3,000 lung cancer deaths in the United States every year, so it must be noted that non smokers living with smokers are also in danger of contracting lung cancer.
The facts about lung cancer can be scary, but knowing how and why it develops can help you protect yourself from this dangerous disease.
Knowing the early symptoms of lung cancer can help you get an early diagnosis, increasing your chances of survival.