Which type of dietary fibre is more effective at preventing constipation?

Insoluble fibre is particularly effective at preventing constipation due to its unique characteristics. This type of fibre does not dissolve in water, which means it adds bulk to the stool and promotes movement through the digestive tract. As it passes through the intestines, it helps to keep things moving and can assist in preventing the stools from becoming hard and difficult to pass.

This bulk-forming action is essential for maintaining regular bowel movements and is especially beneficial for individuals who may struggle with constipation. Foods rich in insoluble fibre, such as whole grains, nuts, seeds, and many vegetables, contribute significantly to digestive health by enhancing stool frequency and ease of passage.

In contrast, while soluble fibre can also play a role in digestive health by forming gels in the gut and potentially aiding in softening stool, its primary function is more connected to regulating blood sugar levels and lowering cholesterol, rather than directly preventing constipation. Hence, for the specific goal of preventing constipation, the effectiveness of insoluble fibre is clearer and more impactful.