What is the function of fiber in the diet?

Fiber plays a crucial role in the digestive system and overall health. It aids in digestion by adding bulk to the stool, which helps to move food efficiently through the intestines and prevents constipation. This bulk-forming property of fiber is important for maintaining regular bowel movements.

In addition to its digestive benefits, fiber also helps regulate blood sugar levels. Soluble fiber, in particular, slows the absorption of sugar, leading to more stable blood glucose levels. This is beneficial for individuals managing diabetes or those at risk of developing the condition.

While fiber does not provide essential vitamins directly, as seen in the other choices, its overall contributions to digestion and blood sugar management underscore its importance in a balanced diet. Therefore, it is recognized primarily for its roles in digestive health and metabolic regulation.