The immune health is crucial for staying healthy. A sound immune system is of great importance to cope with different diseases or illnesses. We all need to enhance our immune system. Regular exercise or taking some natural or artificial product directly or indirectly boosts the immune system.Natural substances that improve the immune system are the subject of investigation for the last decades. A wide range of synthetic and natural products are available in the market described as having immunomodulatory effects. However, only a few products are probably the best studied, and interesting ones are β-glucans (Goodridge et al., 2009; Stier

What are beta-glucans? Beta-glucans are a type of polysaccharide for which effects on cholesterol, blood glucose, and the immune system have been proposed. Where are beta-glucans found? They are found in cereals such as oats and barley, in algae, fungi, and yeasts. Their properties are related to their chemical structure, origin, molecular weight, and solubility, beta-glucans from fungi and yeasts (from beer or bread: Saccharomyces cerevisiae) that act on the immune system. Structure of beta-glucans Beta-glucans are polysaccharide chains consisting of several glucose units linked together through beta 1-3 and beta 1-4 bonds, with or without branches. The structure of