- Breast cancer is the most frequently diagnosed and is the leading cause of death from cancer in women worldwide.
- Lung cancer is the most frequently diagnosed and the leading cause of death from cancer in men worldwide.
- Cancer is the second most common cause of death in the United States following heart disease.
Cancer is characterized by uncontrolled growth and spread of abnormal of mutated cells that can be caused by external and internal factors. Mutated cells have certain characteristics as follows:
- can avoid apoptosis (cell death)
- resist normal aging process
- can replicate outside normal controlling mechanisms
- produce chemicals that dissolve surrounding tissue
- invade other parts of the body
- overcome the immune system