Oyster mushroom is an edible fungus found widely in North America and Europe. It is used in traditional medicine to treat infections, hyperlipidemia, diabetes, and cancer.
In vitro experiments and studies done in mice have shown that Oyster mushroom has antitumor (1) (7) (8) (9) (12) (13), immunomodulatory (10) (11), antifungal (2), lipid lowering, and hypoglycemic (3) (6) properties. The beneficial effects are due to the polysaccharides, lectins, and peptides present in Oyster mushrooms.
In a study of HIV patients with antiretroviral treatment-induced hypercholesterolemia, oyster mushroom was not effective in lowering non-HDL cholesterol (5). But pleuran, a beta-glucan isolated from oyster mushroom demonstrated anti-allergic effects in children with respiratory tract infections (17).