OptimealHealth
Index glycémique et charge glycémique

Dietary Fiber and GI

Non-digestible compounds that decrease the rate of glucose absorption and lower the GI.

Definition

Undigested carbohydrates that significantly slow down sugar absorption and reduce the glycemic index of foods. Soluble fibers in particular form a gel that slows down digestion.

How it works

Dietary fibers, particularly soluble fibers, play a crucial role in modulating glycemic index. By forming a gel-like matrix in the digestive tract, they slow down food passage and the diffusion of simple sugars into the bloodstream. A food rich in fiber will have a lower GI than a similar food without fiber. Dietary fibers are also essential for satiety, intestinal health, and the prevention of many chronic diseases.

Role

Slowing down glucose absorption, improving satiety, and maintaining stable blood glucose.

Examples

  • Leafy greens
  • Whole fruits
  • Legumes
  • Whole grains
  • Oat bran

Recommendations

Gradually increase your fiber intake by drinking enough water to avoid digestive issues. Opt for naturally fiber-rich foods over supplements.

Key takeaway

Fibers are the key nutrient for maintaining a low GI and stable blood glucose.

A question about Dietary Fiber and GI? Ask our nutrition AI.

Ask a question