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What causes cancer?
Cancer doesn't discriminate when it comes to race, sex or age — anyone can get cancer. Cancer begins with damage (mutations) in your DNA. Your DNA is like a set of instructions for your cells, telling them how to grow and divide. Normal cells often develop mutations in their DNA, but they have the ability to repair most of these mutations. Or, if they can't make the repairs, the cells often die.
However, certain mutations aren't repaired, causing the cells to grow and become cancerous. Mutations also cause cancer cells to live beyond a normal cell life span. This causes the cancerous cells to accumulate. The initial genetic mutation is just the beginning of the process by which cancer develops. Scientists believe you need a number of changes within your cells in order to develop cancer.
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