They found that adding this fiber supplement improved cholesterol and insulin levels. The researchers recommend eating a healthful, fiber-rich diet in addition to taking fiber supplements. It is unclear whether Benefiber would have similar effects.

Which fiber is best for lowering cholesterol?

Oatmeal, oat bran and high-fiber foods

Soluble fiber can reduce the absorption of cholesterol into your bloodstream. Five to 10 grams or more of soluble fiber a day decreases your LDL cholesterol. One serving of a breakfast cereal with oatmeal or oat bran provides 3 to 4 grams of fiber.

Does fiber cancel out cholesterol?

Soluble fiber lowers cholesterol by binding to it in the small intestine. Once inside the small intestine, the fiber attaches to the cholesterol particles, preventing them from entering your bloodstream and traveling to other parts of the body.