THE ESSENTIAL ROLE OF FIBER: BEYOND NUTRITION

Abstract

Dietary fiber influences the body in various ways, with particular emphasis on its action in the metabolism of carbohydrates, fats, and other nutrients. It is most commonly present in the diets consumed by populations and is found in the bran of the outer layers of seeds and grains, brown rice, and fruits. Therefore, the objective of this study is to provide information on dietary fiber, its different effects, classification, and sources. This study is based on a review with a time frame from 2000 to 2025, focusing on the classification, structure, mechanism of action, and industrial applications of these compounds. Scientific indexing databases such as SciELO, Science Direct, and Web of Science were considered, ensuring the quality and reliability of the information. The results showed that, due to the physiological effects being related to the physicochemical and functional properties of dietary fiber, dietary fiber plays an important role in human health. In addition, dietary fiber can influence several aspects of digestion, absorption, and metabolism, including: decreasing the intestinal transit time of food; decreasing the rate of intestinal glucose absorption; decreasing blood cholesterol levels; and decreasing the amount of calories ingested.