The digestive system enables the body to get all the vitamins and minerals it needs from the food we eat. Two important organs in the process of digestion are the colon and rectum, which make up the large intestine. Without the colon and the rectum, a person wouldn’t be able to get proper nutrition and rid themselves of bodily wastes. Just like the other organ systems, the colon and rectum are both susceptible to diseases like cancer. In fact, colorectal cancer is the third most common cancer in the world. In this article, we discuss the risk factors and causes of colorectal cancer.