What type of carbohydrate is dietary fiber classified as?

Dietary fiber is classified as a complex carbohydrate, specifically a non-starch polysaccharide. This classification is significant because it highlights the structure and function of dietary fiber in the human diet. Unlike simple sugars, which are quickly digested and absorbed, complex carbohydrates, including dietary fiber, are made up of longer chains of sugar molecules. These longer chains are not easily broken down by the digestive system, which is why fiber plays an essential role in digestive health.

Fiber contributes to feelings of fullness, helps maintain bowel regularity, and can aid in controlling blood sugar levels by slowing the absorption of glucose. It is found in plant-based foods such as fruits, vegetables, whole grains, legumes, and nuts. Understanding this classification underscores the importance of fiber in a balanced diet, as it is not just a source of energy but also critical for overall health and well-being.