This research examines chitosan and chitooligosaccharide (COS), two natural compounds derived from the shells of crustaceans and fungal cell walls, and their potential health benefits. These compounds show promise as natural alternatives to synthetic pharmaceuticals with multiple health-promoting properties. Impacts on everyday life: – Could lead to safer and more natural food preservatives and additives – May help develop better treatments for digestive disorders and metabolic diseases – Potential for creating more environmentally friendly packaging materials – Could improve the effectiveness of dietary supplements and functional foods – May contribute to reducing antibiotic use through natural antimicrobial alternatives