Gastrointestinal conditions include functional constipation or frequent acidity, to more serious, chronic conditions such as metabolic syndrome and non-alcoholic fatty liver disease. If not treated effectively, such conditions can increase the risk of complications such as type 2 diabetes and heart disease, as per MayoClinic.org. In order to tackle these conditions, a holistic disease management approach that includes diet and lifestyle modifications is necessary. (Source: Getty Images/Thinkstock)