Oats are rich in cellulose and vitamin B group, which contributes to the normal operation of digestive function. Oat bran-oat bran is also a treasure. Its soluble fiber can reduce the content of cholesterol in blood and reduce the incidence of coronary heart disease and stroke. Phytic acid in oat bran can inactivate powerful hormones and prevent tumors from being stimulated and growing. Oat bran is a kind of water-soluble fiber, which can not be absorbed by gastrointestinal tract, but can be dissolved in water to form gel, which expands in gastrointestinal tract and increases in volume, thus stimulating intestinal peristalsis, making digestion smooth and avoiding constipation. A study pointed out that people who eat a cup of oat bran every day can reduce their blood cholesterol by 14%. Why can oat bran produce this effect? It turns out that the liver uses cholesterol to make bile acid, and the soluble fiber in oat bran can attach bile acid and excrete it. In this case, the liver can absorb more cholesterol from the blood to supplement bile acids and achieve the effect of lowering cholesterol.

Researchers at the University of Minnesota reviewed 10 studies on oat bran and found that eating 3 grams of oat bran every day can reduce cholesterol by 5%~6% and indirectly reduce the incidence of heart disease 12%.