What are starch and dietary fiber classified as?

Starch and dietary fiber are classified as complex carbohydrates because they are polysaccharides made up of long chains of glucose molecules. This structure allows them to serve different roles in nutrition: starch acts as an energy source, while dietary fiber contributes to digestive health and regulates blood sugar levels. Unlike simple carbohydrates, which consist of one or two sugar molecules (monosaccharides or disaccharides), complex carbohydrates contain three or more sugar units. Their complex structure means they are typically digested more slowly than simple sugars, providing sustained energy and promoting satiety.

In the context of dietary nutrition, both starch and fiber are important components of a balanced diet, contributing to overall health. Understanding their classification helps in distinguishing between various types of carbohydrates and their effects on the body.