The death of a cell is a factor that can stop cells from growing. Cell growth and division are controlled by a variety of genes. A cell is designed to follow a cell cycle of replicating itself in an organized manner.
The body gets rid of cells it does not need through a common process called apoptosis. Cells are broken down and recycled by a type of white blood cell called a macrophage. Badly damaged cells, which can lead to cancer, are removed by the apoptosis process. Cancer is the result of a disruption of the cell cycle, in which the damaged cell continues to divide and causes cancerous tumors to grow.