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The basics of UV sun rays
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| Submitted: Thu Jul 11 2002
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Cancer in general Cancer is a non-communicable (non-infectious) disease, in other words it is not caused by pathogens. Cancer is caused when abnormal cells in the body divide by mitosis in an uncontrolled way by using the enzyme telomerase; this gives rise to tumours and, if the cells are malignant, cancers. Cancer is a major cause of death in the developed world. In 1999 7.3 million people worldwide died from cancers. In high income European countries cancer is known as the second biggest killer. There are over 200 different cancers. The most common cancers are lung cancer and skin cancer. There are about 42.2 new cases of lung cancer reported in the UK per 1000 people each year and 5 new cases of skin cancer reported per 1000 people in the UK each year - and many cases go unreported. It is difficult to treat cancer because there are many different...
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