As many as 25 percent of all people develop cancer at some time in their lives, and next to heart disease more will die of it than any other disease. In reality, though, we don't know how many of us will actually develop cancer because, more often than not, it's eliminated from our system before we even know it. A normal healthy cell suddenly mutates to become a cancer cell and is immediately attacked by specialized white blood cells whose sole mission is to seek out and destroy the cancer. The problem in many cancer cases is with the immune system not being able to keep up, in which event the cancer wins. Very few cancers are inherited.
Exceptions are some types of leukemia, breast cancer, and colon cancer.
Eliminating these from our lives will go a long way to eliminating the risk of getting cancer. Don't smoke 2. Avoid chemicals in the environment and in foods 3. Avoid UV radiation from the sun 4. Eat a low fat, high fiber diet.