Fibre and Digestion

From the moment you eat it, fibre starts an epic journey through your gut.


So, fibre’s digestion-journey begins in your mouth. Special enzymes in your saliva start to break down the carbohydrates that carry the fibre. The food then travels down your oesophagus, the tube between your mouth and stomach.


Once in your stomach, the fibre starts to mix with partially-digested food, creating a thick paste that can pass easily through the rest of your gastrointestinal tract.

Small Intestine

The fibre continues through into the small intestine, passing through undigested.

Large Intestine

Food moves from your small intestine, into your large intestine - also known as the colon. This is the site where fibre does a lot of heavy lifting! Less fermentable fibre increases bulk helping move waste material through the gut. More fermentable types act as a food source for the bacteria living here; with prebiotic fibre specifically targeting important bacteria, fibre’s adventure is almost over.


The fibre makes sure anything that’s left travels to your rectum, Undigested fibre and waste material leaves your body when you go to the toilet. What a journey!

What is Fibre?

Find out more about fibre, and some specific types of fibre

What are Prebiotics and Probiotics?

What are prebiotics and probiotics and the differences between them