Cancer has a fearsome reputation. Not without reason either. It is a disease that has not yet fully yielded to the skills and intelligence of medical scientists and doctors. And, as if the pain from the disease is not enough, the treatment for cancer, too, inflicts heavy suffering on the body.
Cancer is a disease characterized by uncontrolled and abnormal cell division. Cancer spreads in the body and destroys tissues when the cancer cells travel through the blood stream or the lymphatic system. The runaway growth of cells is caused by mutations to the DNA in the cells that makes the cells unable to control cell division. This mutation can either be inherited or acquired. The mortality rate in cancer depends on the type of cancer and where it develops.
Among cancers, lung cancer is the biggest killer, causing up to 3 million deaths every year worldwide. It affects the above-50 age group population most and is one of the most common types of cancers that occur in the Western countries. The main risk factor for lung cancer is smoking. Cigarette smoke, especially, contains several carcinogens. It is estimated that 80 per cent of all lung cancers are caused by...
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