Which type of fiber is beneficial for lowering cholesterol levels?

Soluble fiber is particularly beneficial for lowering cholesterol levels because it has the ability to dissolve in water, forming a gel-like substance in the digestive system. This gel can help to trap cholesterol and bile acids in the intestines, preventing their absorption into the bloodstream. As a result, the body compensates for the decrease in cholesterol by drawing on stores, thus leading to lower overall cholesterol levels.

In contrast, insoluble fiber primarily aids in promoting regular bowel movements and has a different role in digestive health. Fermentable fiber refers to certain types of soluble fiber that can be fermented by gut bacteria, which contributes to gut health but does not have the same direct cholesterol-lowering action. Dietary fiber is a broad term that encompasses both soluble and insoluble fibers, so while it positively impacts health, it does not point specifically to an effective type for lowering cholesterol.