The intestine (and the gut microbiota), often referred to as the «real brain» of the body, has been implicated in a wide range of diseases, including obesity, and diet has a direct impact on intestinal health. While bloating, flatulence and constipation seem like routine, everyday symptoms, one cannot deny the significant societal burden they impart partly through their effect on the quality of life and partly through the medical and surgical costs they incur on patients desperate to improve symptoms. This book discusses irritable bowel syndrome, which is accompanied by complaints of bloating, flatulence, constipation and diarrhea, from which many people routinely suffer. Furthermore, it presents treatment methods, e.g., dietary and nutritional approaches, and recommendations to change lifestyle and manage digestive symptoms.