Causes of Cancer

Doctors and researchers agree: a tumor’s location is not the most important factor in choosing the best treatment. As Dr. Francis Collins, Director of the National Institutes of Health, USA recently said, a lung cancer patient could have more in common with a bladder cancer patient than with another lung…...

Although non-smokers are not immune to lung cancer, cigarette smoking is by far the most important risk factor for this disease. Compared with those who continue to smoke, people who do quit before they are 50 years old cut in half their risk of dying in the next 15 years.…...

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