What are the consequences of neglecting your colon? Colon plays a key role in maintaining the overall health of your body. You are exposed to many harmful toxins in the environment. The air that you breathe is filled with pollutants, and can even be fatal. Improper diet can also destructive for your body. All these unwanted substances are stored in the colon, increasing your chances of having a blocked colon. The complication can be avoided by adequate consumption of water. However, drinking water may not be of any use if the colon has already been damaged.