Health economics is a branch of economics that studies how scarce resources are allocated among alternative uses for the delivery of health care. Resources like hospital beds, skilled nurses, medications, and advanced medical technology are always limited. Human wants and healthcare needs, however, are virtually unlimited. This fundamental mismatch between finite resources and infinite demands is known as scarcity. Because resources are scarce, choices must be made about who gets care, what treatments are funded, and how health services are organized.
Every choice in healthcare involves a trade-off. Opportunity cost is the value of the next best alternative forgone when a choice is made. When a government allocates a specific budget to build a new tertiary referral hospital, that exact money cannot be spent on rural primary healthcare clinics or malaria prevention programs. The opportunity cost of the new hospital is the health benefit that would have been gained from those rural clinics. Nurses and health managers encounter opportunity cost daily when deciding how to deploy limited staffing hours across competing ward duties.
Demand in health economics refers to the quantity of health services that consumers are willing and able to purchase at various price levels over a given period. Unlike ordinary consumer goods, healthcare demand is often derived from the demand for health itself—people do not want dialysis or surgery for pleasure, but to restore their health. Key factors influencing healthcare demand include patient income, the severity of illness, cultural beliefs, and the presence of health insurance or out-of-pocket costs.
Supply is influenced by production costs, technology, workforce availability, and government policies. A shortage of trained nursing personnel restricts the operational capacity of health facilities, directly lowering the supply of inpatient care regardless of patient demand.
Price in a standard market is the amount a buyer pays to a seller. In healthcare, the true economic price is often masked by third-party payers like health insurance schemes or government subsidies. Patients rarely pay the full cost of major surgeries out of pocket. Furthermore, economic cost encompasses more than just financial outlays; it includes time lost travelling to a clinic, waiting hours in a queue, and enduring the discomfort of untreated illness.
Market equilibrium occurs when the quantity of health services demanded by consumers equals the quantity supplied by providers. At this point, there is neither a shortage nor a surplus of services. However, pure market equilibrium is rare in healthcare because of information asymmetry—where doctors know much more about medical needs than patients—and government interventions. When prices are artificially controlled or subsidies are introduced, the market often shifts away from a natural equilibrium, leading to long waiting lists or under-the-table payments.
An externality occurs when the consumption or production of a good affects third parties who are not directly involved in the transaction. Health interventions often create positive externalities. For example, when a child receives a measles vaccine, not only is that child protected, but the risk of infection for the entire community drops (herd immunity). Conversely, negative externalities can occur, such as antibiotic misuse leading to resistant strains of bacteria that threaten the wider population. Public health policies often use subsidies for vaccinations to encourage positive externalities.