One in three of us will be diagnosed with cancer during our life. The disease tends to affect older people – but can strike at any time. Excluding certain skin cancers, there were more than 270,000 new cases of the disease in 2001 – and the rate is increasing by about 1% a year. Some cancer, such as breast, are becoming more common, while new cases of lung cancer fall away due to the drop in the number of smokers. However, while the overall number of new cancers is not falling, the good news is that successful treatment rates for many of the most common types are improving rapidly.
What is cancer? Cancer is an abnormal growth of cells The human body is made up of hundreds of different types of cell, all of which behave differently. A cell in the kidney, although it contains the same genetic information as a brain cell, performs a completely separate role. Cancer happens when a tiny part of the cell’s mechanism goes wrong.
culled from The BBC