Common Causes of Lung Cancer

Common Causes of Lung Cancer
by David Chandler

There are a various risk factors that are linked to lung cancer. The most common known causes are as follows:

Cigarette Smoking
Cigarette smoking is probably the most closely related link to developing lung cancer. A person who smokes two packs or more of cigarettes per day has a one in seven chance of developing lung cancer. Those that smoke one pack of cigarettes per day have a twenty-five times greater chance of developing lung cancer than a non-smoker. In addition, those people that smoke a pipe or cigar have a five times greater chance of developing lung cancer than a non-smoker.

The risk of developing lung cancer increases with the number of cigarettes smoked over your lifetime. Cigarette smoking damages the cells in your lungs. The moment you stop smoking, your lungs begin healing themselves, replacing damaged cells with healthy, normal cells. Your risk of developing lung cancer begins decreasing almost immediately when you quit smoking. Every year that you do not smoke, your chances of developing lung cancer drop further. By the fifteenth year, your chances of developing lung cancer are about the same as those of a person who has never smoked.

Secondhand Smoke
Also known as passive smoking, people exposed to secondhand smoke on a regular basis will have a higher risk of developing lung cancer, even if they do not smoke themselves. Studies have shown that those who live with a smoker have a 24% greater risk of developing lung cancer than most non-smokers. Doctors estimate that about 3000 lung cancer deaths a year are related to secondhand smoke.

Asbestos Exposure
Exposure to asbestos is another well-known cause of lung cancer and mesothelioma - cancer of the pleural lining of the lungs. Asbestos was widely used in construction and everyday products in the late 1800s through the 1960s. Asbestos separates into fine silica fibers that become trapped in the tissues of the lungs. Mesothelioma is inextricably linked to asbestos exposure. There are no reported cases of mesothelioma in people who were not exposed to asbestos either in the workplace or through their environment. A non-smoker who was exposed to asbestos has a five times greater risk of developing lung cancer than a non-smoker who was not exposed. Smoking increases the risk dramatically - a smoker who was exposed to asbestos has a risk of developing lung cancer that is 50 to 90 times greater than that of a non-smoker.

Radon Gas
It is estimated that about 12% of lung cancer deaths can be attributed to radon gas, a colorless, odorless gas that is a natural byproduct of the decay of uranium. The U.S. Environmental Protection Agency estimates that as many as 15% of homes in the United States have unsafe levels of radon gas, which will account for 15,000 to 22,000 deaths from lung cancer annually.

Air Pollution
Scientists estimate that as many as 1% of all lung cancer deaths are attributable to air pollution. They believe that prolonged exposure to very polluted air can raise the risks of developing lung cancer to about the levels of a passive smoker.

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Lung Cancer: The Bad and the Worse There are two major types of lung cancer. One is the Small Cell Lung Cancer (SCLC) mentioned in the previous paragraph. The other is Non-Small Cell Lung Cancer (NSCLC). Non-Small Cell Lung Cancer has three subtypes: Adenocarcinoma, Squamous Cell Carcinoma and Large Cell Undifferentiated Carcinoma. NSCLC is the least "serious" of the two types. In fact, if it is detected early, it is possible that it can be cured with surgery.

Save Yourself From Lung Cancer Three common types of non-small cell lung cancer are squamous cell carcinoma, adenocarcinoma and large cell carcinoma. Squamous cell carcinoma is the most common non-small cell lung cancer. Adenocarcinoma, the primary cause of this non-small cell lung cancer is still a challenge to medical experts. Thus, experts continue to study the major cause of this cancer.

Common Causes of Lung Cancer There are a various risk factors that are linked to lung cancer. The most common known causes are as follows: Cigarette Smoking, Secondhand Smoke, Asbestos Exposure, Radon Gas and Air Pollution

What Are The Stages Of Lung Cancer? Once a diagnosis of lung cancer has been made, the doctor will attempt to determine the stage the lung cancer is at. The staging system is somewhat like a measurement system, with the numbers indicating: whether the cancerous tumors are localized or whether the tumors have spread to other parts of the body; the tumor's size; and whether or not the tumors have spread to the lymph nodes. There are four main stages of lung cancer (Stages 1 - 4) and identification of one of the stages is what helps doctors prescribe an appropriate treatment method.

Steps To Preventing Lung Cancer Did you realize that approximately 10% of lung cancer patients have never in their lives smoked cigarettes? When asked about lung cancer prevention, most people will tell you that the easiest way to prevent lung cancer is to never take up the dangerous habit of cigarette smoking. And while it's true that smoking often leads to lung cancer, the fact that 10% of lung cancer patients are not now nor have ever been smokers cannot be easily explained.

How Smoking Increases The Risk Of Lung Cancer With so many dangers associated with smoking, especially the correlation between smoking and the development of lung cancer, it is amazing to see how many people continue to voluntarily take part in this activity! Why is it that these mostly mature, reasonably intelligent men and women of every nationality allow such a small object to have so much control over their lives? You'd think it would be easy to just say "NO" to this tiny little death machine, but in reality it just isn't so.

Lung Cancer Symptoms, What You Need To Know. Because lung cancer symptoms do not manifest until it is already on its advanced stage, minor lung cancer symptoms are often ignored. This is because minor lung cancer symptom such as frequent coughing is often associated with itchiness in the throat. Smokers believe that this is an ordinary occurrence among smokers, thus they are not alarmed until they feel more severe lung cancer symptoms.