(a) Definition
The name cancer actually refers to numerous distinct diseases characterized by abnormal cell growth and differentiation. Cancer evolves from irrepressible growth of abnormal cells that have mutated from normal tissues. Cancer is the result of a multi-step process called carcinogenesis, which occurs over a long period of time. The state of the cancer is highly dependent on the cell type and organ from which it is derived.
(b) Risk Factors and Incidence
Frequently doctors cannot explain why one person develops cancer and another foes not. Much research shows that certain risk factors increase the chance that a person will develop cancer. The most common factors for becoming prone for cancer are growing older, tobacco, sunlight, certain chemicals, family history, alcohol, and a poor diet. According to Healthline.com there are more than 8 million new cases and 5 million deaths from cancer per year. The incidence of cancer is nearly 100,000 new cases each year.......
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