Explore four common diseases and body systems: how they work, how they are treated and prevented. Understanding Common Diseases is designed for everyone who cares about their health or is interested in knowing more about how their body works. Over the course of the subject, you will hear from patients with four different diseases: high blood pressure, heartburn, diabetes and the common cold. We have chosen these diseases as they all affect different body systems and occur commonly in the general public. We will be describing how patients experience the disease, the normal way the body system works and looking at how the disease affects function and how you and your doctor can best manage your health.