Why do we have cancer inside us if we do not get cancer?

Cancer starts with changes in one cell or a small group of cells in the body. The changes ... Usually, we have just the right number of each type of cell. This is ... Sometimes a change happens in the genes when a cell divides. This is a mutation. It means that a gene has been damaged or lost or copied twice. read more

Older people get cancer most often, and we're getting older Like heart disease, cancer largely affects the senior population. About 77 percent of all cancers are diagnosed in people over age 55, a segment of the U.S. population that is expected to double by 2060. read more