Our sedentary lifestyle is often the problem for most health conditions. One of the main causes of colorectal cancer is living an unhealthy lifestyle. So, what is colorectal cancer (CRC)? It is cancer that is caused in the colon or the rectum. The rectum is basically the track of the large intestine that connects the colon to the anus in a human body. This type of cancer is also known as Colon Cancer or Bowel Cancer.