Beta Glucan is a soluble dietary fiber found naturally in cereal grains, yeast, and in medicinal mushrooms (cordyceps, reishi, shitake, and maitake). Among its sources, barley has the highest Beta Glucan content. Beta Glucan is a polysaccharide that promotes good health by reducing cholesterol, and controls blood sugar levels. Beta Glucan lowers blood cholesterol by preventing the absorption of cholesterol from food in the stomach and intestines. If injected, Beta Glucan stimulates the immune system by growing chemicals which prevent infection. Beta Glucan also helps with constipation and bowel issues, preserves healthy intestinal bacteria, and helps regulate weight.