Efeito da ingestão de fibras alimentares na composição corporal de adultos: uma revisão de literatura

Abstract

Objective: To analyze the effect of dietary fiber intake on body composition in adults. Methods: A review was conducted using the PubMed database with the descriptors “dietary fiber” AND “weight loss” OR “obesity” OR “body fat distribution” OR “body composition.” Filters were applied regarding study type, language, publication date, and age group. Results: Fifteen articles were selected, mainly randomized clinical trials with an average duration of 12 weeks. Soluble fiber was the most studied, especially β-glucan, inulin, and fermentable cereal fibers such as oats, barley, and whole wheat. The supplementation protocols included both dietary modifications to increase fiber intake and the addition of sachets/powdered supplements to meals. The main outcomes analyzed were satiety, body weight, and metabolic parameters. Conclusion: Dietary fiber supplementation had a positive impact on body composition and showed improvements in metabolic markers such as glycemia and lipid profile, in addition to promoting gut health through increased microbiota diversity.