This document discusses key concepts in health economics. It defines health economics as analyzing the production, distribution, and consumption of health care resources and services. Some main points covered include: - Health and healthcare resources are scarce and societies must make choices about allocating them. - Individuals demand health because it provides utility and the ability to work, and they produce health through behaviors and medical care as one input. - Societies face trade-offs in allocating resources between medical vs. non-medical goods, treatments vs. prevention, and equity vs. efficiency.