Mannose is a simple sugar, specifically a type of monosaccharide, that is found in various fruits and plants. It plays a crucial role in human metabolism and is involved in the formation of glycoproteins, which are essential for cell communication and immune function. Mannose is often studied for its potential benefits in urinary tract health. In addition to its natural occurrence, mannose is available as a dietary supplement. Some research suggests that it may help prevent urinary tract infections by inhibiting the adhesion of bacteria to the urinary tract lining. However, more studies are needed to fully understand its effectiveness and safety.