Researchers developed an improved method to extract beneficial polysaccharides from Ganoderma leucocontextum (white Ganoderma), a rare mushroom from the Tibetan plateau. The extracted compound GLSP-A1 showed strong anti-inflammatory effects by reducing inflammatory markers and reduced signs of aging in test organisms by decreasing harmful reactive oxygen species and cellular aging pigments. This work suggests the mushroom polysaccharide could potentially be used in dietary supplements to help slow aging.