William Petty, a 17th-century English economist, is widely regarded as the father of health economics for his pioneering work on the economic value of health and healthcare.

Early health economics research primarily focused on cost-benefit analysis, evaluating the economic benefits of healthcare interventions relative to their costs.

World War II had a profound impact on health economics, leading to increased government involvement in healthcare and stimulating research on the economic aspects of healthcare.

The Beveridge Report, commissioned by the British government during World War II, aimed to establish a comprehensive national health service, laying the foundation for modern healthcare systems.

Classical economics, with its focus on individual rationality and utility maximization, has significantly influenced health economics, particularly in the analysis of healthcare demand and consumer behavior.

The RAND Health Insurance Experiment, conducted in the United States from 1974 to 1982, aimed to evaluate the impact of health insurance on healthcare utilization and health outcomes.

Kenneth Arrow, a Nobel Prize-winning economist, is credited with formally analyzing the concept of 'moral hazard' in health insurance, highlighting the potential for individuals to overconsume healthcare services when insured.

The Alma-Ata Declaration emphasized the importance of primary healthcare as a key strategy for achieving health for all, highlighting the need for accessible, affordable, and comprehensive healthcare services.

Information economics, with its focus on the role of information in economic decision-making, has significantly influenced health economics, particularly in the analysis of healthcare markets and the behavior of healthcare providers and consumers.

The Affordable Care Act, also known as Obamacare, was enacted in 2010 with the primary goal of expanding health insurance coverage to millions of Americans who previously lacked it.

The rise of health maintenance organizations (HMOs) in the 1970s and 1980s significantly influenced the development of managed care organizations, which aimed to control healthcare costs through various mechanisms such as capitation payments and provider networks.

The WHO Commission on Macroeconomics and Health aimed to assess the economic impact of health on economic growth and development, highlighting the importance of investing in health as a means of promoting economic prosperity.

Institutional economics, with its focus on the role of institutions in economic decision-making, has significantly influenced health economics, particularly in the analysis of healthcare systems and the behavior of healthcare providers and consumers.

The United Nations' Millennium Development Goals (MDGs) were a set of eight goals adopted in 2000, with the primary goal of eradicating extreme poverty and hunger.

The rise of managed care organizations in the United States in the 1970s and 1980s contributed to the development of value-based healthcare (VBHC) models, which aim to align healthcare payments with the value of care delivered.