The purpose of this curriculum is to help physicians, scientists, and healthcare practitioners learn the basic principles of what Dr. Cowan calls the "New Biology" and incorporate them into their lives and practices. The old biology is largely incorrect, outdated, and misleading, and there is an urgent need to replace these outdated principles with a new understanding that reflects the actual way that biological organisms are organized and function. Understanding the principles of the New Biology will lead to a better understanding of how living systems are organized, why and how they fall ill and how to restore them to health.