If you are asked for advice on whether diets high in fiber can reduce colon cancer risk, what would you reply

Answer;
A possible role of fiber in the colon is to provide butyrate as energy to keep the colon cells healthy and resistant to chemical damage causing cell changes. 

Explanation; 
Fiber is an extremely important of a healthy diet. It is found in plants and is indigestible, yet enables the body to eliminate waste and maintain homeostasis.
Soluble fiber promotes the movement of material through the digestive system and increases stool bulk, and benefits individuals with constipation.