What is the primary function of soluble fibers in the digestive system?

Soluble fibers play a crucial role in the digestive system primarily by absorbing water to soften bowel contents. This characteristic allows soluble fibers to form a gel-like substance in the presence of water, which helps to maintain bowel regularity and prevent constipation. By absorbing water, soluble fibers can also slow down digestion, which may contribute to a feeling of fullness and help regulate blood sugar levels.

In addition to their role in softening stool, soluble fibers also have beneficial effects on overall health. They can help lower cholesterol levels and improve gut health by serving as a food source for beneficial gut bacteria.

Other options present ideas that, while they relate to digestion, do not accurately describe the primary function of soluble fibers. For instance, making bowel contents harder, adding bulk to the digestive system without addressing the water absorption aspect, or eliminating toxins, while components associated with digestive health, are not the main role of soluble fibers.