Understanding disease

Describes how the bones and joints are put together, what goes wrong when there is arthritis, what causes it, and how it is treated.

Discusses how the body uses foods, food groups, what goes wrong when diabetes occurs, the different types of diabetes, treatment, and research for future improvements in treatment and prevention.

Describes how the heart and circulatory system work and discusses such problems as heart defects, heart attacks, and other malfunctions. Also discusses ways of maintaining a healthy heart and treatments for heart disease.