Probiotics are beneficial live microorganisms that support health, primarily through enhancing gut microbiota. Present in fermented foods like yogurt, kimchi, and kefir, as well as in supplements, probiotics help maintain a balance of good bacteria in the gut. This balance is essential for supporting digestion, immune function, and even mental health through the gut-brain axis. Studies show that probiotics may alleviate symptoms of gastrointestinal issues, including irritable bowel syndrome (IBS), and aid in treating inflammatory bowel diseases such as Crohn’s disease and ulcerative colitis. Probiotics have also been associated with enhanced immune response, reduced risk of infections, and improved nutrient absorption. Emerging research suggests their role in weight management and controlling metabolic disorders. Probiotic supplementation, therefore, can be a valuable tool in promoting overall well-being, as maintaining gut health is key to holistic health.