What does the term 'fibre' refer to in nutrition?

The term 'fibre' in nutrition specifically refers to the indigestible part of plant foods. This component plays a critical role in digestive health as it aids in the movement of food through the digestive tract and helps maintain bowel regularity. Fibre can be categorized into two types: soluble and insoluble. Soluble fibre dissolves in water and can help to lower cholesterol levels and control blood glucose. Insoluble fibre does not dissolve and adds bulk to the stool, promoting healthy digestion.

Fibre is essential not just for digestion but also contributes to overall health by supporting heart health, aiding in weight management, and potentially reducing the risk of certain diseases. The distinction of fibre as an indigestible component underscores its unique and vital function compared to other nutrients, which are either fully digestible or serve different purposes in the diet.