Your gut contains about 100 trillion microorganisms, including about 400 different species of bacteria. The complex ways in which these organisms interact can play a very large role in how the average person feels. An unhealthy gut can manifest itself in many different ways, from heartburn and constipation to irritable bowel syndrome and possibly even autoimmune diseases.   In , you will discover common-sense ways to avoid many modern habits—from consuming too much sugar and processed foods—that can lead to an unbalanced gut. You’ll also enjoy 150 convenient, delicious, and wholesome dishes, including: This informative, illustrated guide can help put you on the path to a healthier gut, and also a healthier you.