Gut health is increasingly recognized for its impact on digestion, immunity, and mental well-being. Gastroenterologist Saurabh Sethi explains that many people mistakenly believe that eating healthy foods alone can resolve gut issues. He emphasizes the importance of the gut microbiome, a community of microorganisms that aids digestion and supports the immune system. Sethi suggests incorporating fermented foods such as yogurt, kefir, kimchi, and sauerkraut, which are rich in beneficial bacteria. However, he stresses that these foods should be combined with fiber-rich options like seeds, beans, oats, fruits, and vegetables to fuel the beneficial bacteria. Following a diet rich in fermented foods for about two weeks can lead to noticeable improvements in nutrient absorption, digestion, and immunity. Sethi advises starting with small portions, such as a few spoonfuls of kimchi or half a cup of yogurt daily, and gradually increasing the intake as the gut adjusts.