Which of the following is NOT a function of soluble fiber?

Soluble fiber plays a significant role in various health-related functions, but it is important to recognize what each of these functions entails. While soluble fiber is beneficial for many processes within the body, its primary attribute is not focused on helping with regularity. Instead, soluble fiber is known for its ability to dissolve in water, forming a gel-like substance that can effectively slow digestion, thereby aiding in stabilization of blood sugar levels, reducing cholesterol levels, and assisting in weight management by promoting a feeling of fullness.

When talking about regularity specifically, insoluble fiber stands out as the key player, as it adds bulk to stool and is crucial for promoting bowel movements. This distinction is vital when evaluating the specific roles of different types of dietary fiber. Soluble fiber's contributions to lowering cholesterol and stabilizing blood sugar make it an essential component of a balanced diet, particularly for those managing conditions like diabetes or seeking to maintain heart health.