Fiber: how does it affect blood sugar levels and does it help with insulin resistance?

Dietary fiber plays a key role in regulating blood glucose levels and preventing sharp blood sugar spikes after a meal. This is especially true for soluble fiber, which, upon contact with fluid in the gastrointestinal tract, turns into a gel-like substance. This gel significantly slows down the process of digestion and carbohydrate absorption in the small intestine.

As a result, glucose enters the bloodstream gradually, without causing a sharp release of insulin by the pancreas. This property makes fiber-rich foods indispensable for people with type 2 diabetes mellitus and those facing insulin resistance. Stable blood sugar levels help avoid sudden hunger pangs and energy crashes during the day.

For maximum benefit, it is recommended to consume complex carbohydrates with a high fiber content in every main meal. Sources include whole grain porridges, legumes, fresh vegetables, and greens. Such an approach reduces the overall glycemic load on the body and promotes long-term metabolic stability.