Dietary fiber plays a crucial role in regulating blood sugar levels. It slows down the digestion and absorption of carbohydrates, which helps to prevent spikes in blood glucose. This is particularly important for individuals with diabetes or insulin sensitivity, as it can help maintain stable energy levels. Soluble fiber, found in foods like oats and beans, forms a gel-like substance that aids in controlling the rate at which sugar enters the bloodstream. Hence, a high-fiber diet can contribute to better glycemic control and overall metabolic health.