How does dietary fiber help in blood glucose management?

Dietary fiber plays a crucial role in blood glucose management primarily by slowing the absorption of sugar in the bloodstream. When foods high in dietary fiber are consumed, the fiber forms a gel-like substance in the digestive tract. This slows down the digestion and absorption of carbohydrates, including sugars. As a result, glucose is released more gradually into the bloodstream, which helps prevent rapid spikes in blood sugar levels. This gradual increase allows the body’s insulin response to manage glucose more effectively, promoting better overall glucose control.

In contrast to the other choices, increasing insulin production is not a direct action of dietary fiber itself; rather, it influences how the body responds to the glucose that enters the bloodstream more gradually. While dietary fiber can aid in reducing caloric intake by promoting feelings of fullness, the primary mechanism for managing blood glucose levels is specifically through the slowing of sugar absorption. Additionally, dietary fiber does not raise blood sugar levels; instead, it actively promotes steadiness in blood glucose response.