Fiber plays a crucial role in regulating blood sugar levels by slowing the absorption of sugars into the bloodstream. This helps to prevent rapid spikes in glucose, which can lead to insulin resistance over time. Including both soluble and insoluble fiber in the diet can improve overall metabolic health and support digestive function. High-fiber foods, such as fruits, vegetables, and whole grains, promote satiety and may reduce the risk of developing conditions like type 2 diabetes.