In general, individuals can have different gastrointestinal responses to fermented and carbonated beverages (for example, some may experience bloating). Also, those with IBS may be sensitive to certain high-FODMAP ingredients in kombucha (particularly types of sugar like fructose). It's best to start with a small amount and test for tolerance. From a gut health perspective, there may be benefits to consuming probiotic rich foods and beverages. Some unpasteurized, raw kombucha can contain varying levels of probiotics, or “good” bacteria, however, it is inconclusive if the strands of bacteria and amounts present in kombucha specifically promote a healthy gut in humans. To learn more about probiotics in general, check out The Best Probiotic Supplements of 2022 for Men and Women. To support a healthy gut and bowel regularity, consider diversifying your intake of probiotic-rich foods (like yogurt, kefir, kombucha, kimchi and other fermented products) and consuming adequate fiber from plant-based sources like fruits, vegetables, whole grains and legumes. Additionally, adequate hydration is essential for regularity, particularly as you increase your fiber intake.