These 18 foods have properties that may support a healthy gut, fight inflammation, balance fluid and sodium levels, and keep you hydrated—all factors that help manage bloat: “They also contain fiber (one medium avocado has 9 grams of fiber or 35% of your recommended daily intake),” integrative gastroenterologist Marvin Singh, M.D., says, “which helps feed the trillions of bacteria in the gut.” For anyone sensitive to dairy, she recommends kefir, which is almost lactose-free.