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This course examines the health risks of being overweight, such as Type 2 diabetes, heart disease and stroke, cancer, sleep apnea, osteoarthritis, gallbladder disease, and fatty liver disease.

This course explains how the human immune system works, how vaccinations work to ward off existing and emerging infectious diseases, and some of the great strides that are being made to detect, treat and prevent disorders of the immune system.

This course examines the biology of influenza and types of vaccinations. It also discusses signs and symptoms, lab diagnoses and measures to control infection. Also provided in this course are a brief history of influenza pandemics, the avian flu (H5N1) and current research being conducted.

This course provides an overview of hepatitis C virus (HCV) infection, symptoms, testing, prevention, available treatments, and outcomes.

Over 40 percent of American adults have obesity, putting them at increased health risk for chronic diseases such as heart disease, Type 2 diabetes, high blood pressure, stroke and some forms of cancer. This course provides basic information about obesity.

Osteoporosis is a disease in which the density of bone is reduced, increasing the risk of fracture. Around the world, osteoporosis affects one in three women and one in five men over the age of 50. This course examines this serious world-wide health problem.

This course provides an overview of HIV, how it is spread, its symptoms and diagnoses, and its vaccination.

This course provides you with information you can use when dealing with dying patients and their caregivers and family members.

This course examines Duchenne Muscular Dystrophy, the most common of the muscular dystrophies.

This course provides an overview of the musculoskeletal system including a discussion of the major disorders that can affect it.

This course provides an overview of hepatitis B, how it is spread, its symptoms and diagnoses, and its vaccination.