Here are some expert tips for maintaining a healthy gut: 1. Eat a well-balanced diet with plenty of fruits, vegetables, whole grains, and lean proteins. 2. Avoid processed foods, sugary snacks, and carbonated beverages. 3. Stay hydrated by drinking enough water throughout the day. 4. Manage stress through techniques like meditation, exercise, or counseling. 5. Get regular exercise to promote healthy digestion. 6. Limit alcohol consumption and quit smoking. 7. Take probiotics or eat fermented foods to promote a healthy gut flora.