# The Role of Dietary Fibers in the Management of Type 2 Diabetes: A Synthesis of Current Evidence and Clinical Implications

## TL;DR

This paper reviews how dietary fibers, especially soluble ones, can help manage type 2 diabetes by improving blood sugar and gut health.

## Contribution

The paper synthesizes recent clinical evidence and mechanisms of dietary fibers in T2D management, emphasizing personalized dietary strategies.

## Key findings

- Soluble fibers like psyllium and β-glucan improve glycemia and HbA1c in T2D patients.
- Fermentable fibers influence gut microbiota and SCFA production, impacting metabolic health.
- Dietary fibers may reduce medication needs and improve lipid profiles in T2D management.

## Abstract

Type 2 diabetes (T2D) represents a major public health challenge, being associated with significant metabolic and cardiovascular complications. Evidence-based nutritional interventions are essential for the prevention and management of the disease. Dietary fibers, particularly soluble fibers such as psyllium, β-glucan, inulin, and fermentable fiber blends, have demonstrated beneficial effects on glycemia, glycated hemoglobin (HbA1c), lipid profile, body weight, and medication requirements. This narrative review synthesizes the results of recent clinical trials and meta-analyses, highlighting the underlying physiological mechanisms, including colonic fermentation and short-chain fatty acid (SCFA) production, as well as the impact on gut microbiota composition. The findings support the integration of soluble fibers into a personalized dietary plan as part of a multidimensional strategy for T2D management. Further long-term randomized studies are warranted to standardize doses and assess the metabolic and microbiota-mediated effects of dietary fibers.