Posts Tagged ‘tumor’
Lung cancer is widely known as being a deadly result of smoking, however it can still afflict those who have never picked up a cigarette. Cancer, while sometimes triggered by an outside factor, is the random proliferation of cells. The body is supposed to regulate cell division, but when something interferes with its ability to maintain a balance, cells can divide at an exponential rate, causing tumors. Benign tumors pose a small threat to the body, but can usually be surgically removed. Malignant tumors, on the other hand, start in one part of the body and spread to others. This form must be treated with more complicated and less effective methods. Lung cancer spreads quickly once it forms, and it is among the hardest types to treat. In the first year, only 40% are expected to survive; by the third year, the number drops to 10%. Lung cancer takes more lives each year than colon, prostate, and breast cancer do combined, making it the deadliest form of cancer.
No. 2 Cause of Lung Cancer: Radon Gas
Tobacco products have been blamed for anywhere between 80% to 96% of lung cancer cases, but staying away from cigarettes does not guarantee healthy lungs. Secondhand smoke increases the risk, making up approximately 3,000 of the 160,000 lung cancer deaths each year. However, even without exposure to tobacco products or smoke, a person can still contract lung cancer. Asbestos has become a well known factor in causing mesothelioma, but it is also linked to lung cancer. Asbestos fibers can stay in the lungs for a lifetime, and people who have had exposure are five times as likely to develop lung cancer, even if they have never smoked. Radon gas, a product of uranium decay, causes around 20,000 lung cancer deaths each year. This makes it the second leading cause of lung cancer. While most people would not consider radon gas to be a threat, the Environmental Protection Agency has estimated that almost 7% of houses contain a dangerous level of the gas, which can travel through soil. It has been shown that genetic predisposition can attribute to lung cancer development. History of lung disease, including prior lung cancer, increases the risk as well. Approximately 1% of lung cancer comes from air pollution. While smoking increases the chances, any of these risk factors alone can cause lung cancer.