Galacto-oligosaccharides (GOS) are widely used as prebiotics in the food and beverage industry to promote gut health. They are added to infant formula to mimic the prebiotic effects of human milk, supporting the growth of beneficial gut bacteria like bifidobacteria and lactobacilli. In functional foods and dietary supplements, GOS helps improve digestive health, enhance mineral absorption, and boost the immune system. They are also incorporated into dairy products, baked goods, and beverages to enhance nutritional value without significantly altering taste or texture. Additionally, GOS is used in animal feed to improve gut health and overall well-being in livestock and pets.