Colon Cancer or Colorectal Cancer begins in the final part of the digestive tract, which is known as the colon. Colorectal Cancer typically affects older adults over the age of 50. It usually begins as small non-cancerous (benign) clumps of cells called polyps that form inside the colon. http://slimdietfacts.com/everything-you-want-to-know-about-colon-cancer-and-its-treatment/