Beta-glucans are complex carbohydrates. They are a type of polysaccharide that is made of a string of glucose (sugar) molecules joined together. , that are known for stimulating the immune system and having a positive impact on the reduction of cholesterol levels(1). Yeast stores a significant amount of β-glucans in its cell walls. However, beta-glucans concentration in bread is so low that its contribution to health is almost insignificant.
(1)(EFSA opinion references 2009;7(9):1254, 2011;9(6):2207 ; Commission Regulation (EU) 432/2012 of 16/05/2012). For example, according to the EFSA, consuming 3g of beta-glucans per day (present in oat or oats oat bran) helps lower cholesterol levels in humans.