North American medicine was made through Indigenous knowledge, settler colonialism, institutions, experiment, and struggles over access.

For this site's navigation, the page follows entries located principally in present-day Canada and the United States. That boundary is modern and artificial: Indigenous homelands and medical networks pre-date it, colonial jurisdictions changed repeatedly, and people, remedies, institutions, and epidemics crossed every later border. Mexican, Central American, and Caribbean histories are developed in the Latin America and Caribbean guide, not because they were disconnected from the histories below.

There was—and is—no homogeneous “Indigenous medicine.” Nations maintained particular healers, medicines, ceremonies, forms of childbirth care, and relationships among bodies, communities, ancestors, lands, and waters. The U.S. National Library of Medicine's Native Voices exhibition deliberately presents multiple Native speakers and warns against treating their beliefs and practices as uniform (NLM). “Traditional” does not mean frozen in the past: Indigenous practitioners and patients have preserved, revised, combined, or declined practices under changing conditions.

Colonial records require equal care. Settlers learned about plants and therapies from Indigenous and African people while printed accounts often recast that knowledge as a European discovery. Missionary reports, physicians' case notes, government surveys, and hospital files document encounters, but they were created by institutions seeking converts, authority, land, labour, or administrative control; they do not transparently record what patients believed or chose (Wisecup, 2013).

This page discusses historical remedies, disease explanations, and clinical practices as evidence of past medical worlds, not as present-day treatment advice. Historical use alone does not establish a substance's identity, dose, safety, or efficacy. Present-day clinical questions require current medical guidance.

Before European settlement–1800: medical pluralism under colonisation

Indigenous societies already possessed specialised and household knowledge about health, injury, childbirth, food, plants, ceremony, and care. European arrival did not replace those practices with a complete medical system. In British North America, Indigenous, African, and European patients and practitioners exchanged substances and explanations while arguing over spiritual and bodily authority. Surviving colonial texts can reveal those exchanges, but their authors frequently claimed mastery over knowledge acquired from others (Wisecup, 2013).

Smallpox, measles, influenza, and other introduced infections caused devastating mortality in many Indigenous communities, but “lack of immunity” is not an adequate total explanation. Trade and military routes moved pathogens; warfare, enslavement, removal, hunger, ecological disruption, and crowded settlements changed exposure and survival. Colonists also interpreted epidemics to justify occupation or assimilation. The intensity, timing, records, and responses differed by place, so continent-wide mortality estimates and retrospective diagnoses should be treated cautiously (Jones, 2004).

1800–1910: hospitals and credentials reorganised care

In the early nineteenth-century United States, most nursing and treatment still occurred in households and medical practice was a competitive market involving university-trained physicians, apprentices, midwives, sectarian practitioners, drug sellers, and self-treatment. Hospitals initially served especially sailors, immigrants, poor people, and others without households able to care for them. During the later nineteenth century, surgery, laboratories, diagnostic technologies, nursing schools, and specialist wards helped make hospitals sites that paying patients and doctors increasingly sought out. Charity, religious provision, municipal funding, fees, and commercial interests remained intertwined (Rosenberg, 1987; Starr, 1982).

Licensing laws, university affiliation, laboratories, and teaching hospitals narrowed entry into recognised medicine. The Carnegie Foundation's 1910 report by Abraham Flexner surveyed schools in both the United States and Canada and promoted demanding admissions, laboratory science, and hospital-based clinical education. It reflected reforms already under way rather than beginning them alone. New investment improved some schools, but closures and higher costs reduced routes into medicine; Black schools and women faced disproportionate constraints. Historians therefore disagree about how much causal weight to give one report, even while recognising its influence (Cho and Robert, 2024).

1910–1955: therapies and measurements depended on organisations

Insulin illustrates why discovery stories need teams and infrastructure. Work at the University of Toronto in 1921–22 brought together Frederick Banting, Charles Best, J. J. R. Macleod, and biochemist James Collip, then required patients, hospital staff, animal facilities, purification, manufacturing agreements, and earlier research performed elsewhere. The achievement was transformative, but later disputes over the 1923 Nobel Prize and individual credit show the limits of treating Banting as a lone inventor (Bliss, 1982).

Institutional expansion also produced segregated systems. In the United States, Black physicians and communities built and defended hospitals because white institutions commonly denied them staff privileges, training, or admission; the Black hospital movement of the 1920s–40s sought better facilities without accepting segregation as equality (Gamble, 1995). In Canada, the federal government developed a separate network officially called “Indian hospitals” from the 1920s and retained parts of it into the 1980s. The historical administrative term is reproduced here only to identify that system: it imposed separation on First Nations and Inuit patients amid disputes over federal responsibility, discrimination, labour, and the meaning of treaty obligations (Lux, 2016).

Two post-war examples show innovations becoming routines rather than appearing complete in one mind. Virginia Apgar's 1953 paper proposed a five-sign score at one minute so staff could compare newborn condition, obstetric practice, anaesthesia, and resuscitation. It is a primary clinical publication describing the proposal and its first series, not evidence by itself of later outcomes or universal use (Apgar, 1953). Jonas Salk's inactivated polio vaccine likewise depended on laboratory colleagues, the National Foundation for Infantile Paralysis, schoolchildren and families, local health and school staff, manufacturers, and Thomas Francis Jr.'s independent evaluation of the 1954 field trial. Disputes over observed and placebo controls and the separate work of evaluation make “Salk cured polio” an inadequate summary (Marks, 2011).

1932–1979: research abuse prompted rules, but not a simple ethical conversion

The U.S. Public Health Service study at Tuskegee enrolled Black men in Alabama from 1932 to observe untreated syphilis; it also enrolled men without syphilis as controls. Researchers did not infect the men, a persistent misconception, but they used deception, failed to obtain informed consent, and withheld effective treatment after penicillin became available. Public exposure in 1972 ended the study. Susan Reverby's archival history distinguishes the study itself from later memory, while the CDC timeline supplies the agency's current institutional account (Reverby, 2009; CDC).

Tuskegee was one of several abuses and controversies that shaped U.S. regulation. The 1974 National Research Act created a commission that issued the 1979 Belmont Report, organising research ethics around respect for persons, beneficence, and justice. The report is a normative government document produced for policy and review; it records what the commission said ethical research should require, not proof that institutions thereafter complied or that affected communities immediately regained trust (National Commission, 1979).

1947–1984: Canadian and U.S. financing followed different political paths

Canadian public insurance emerged province by province, not as a single federal creation. Saskatchewan introduced universal hospital insurance in 1947 and physician-services insurance in 1962 despite fierce opposition from organised medicine. Federal cost-sharing legislation followed for hospital care in 1957 and physician care in 1966; all provinces and territories participated in physician coverage by 1972. The 1984 Canada Health Act joined the earlier frameworks and discouraged extra-billing and user charges. Canadian medicare chiefly insured hospital and physician services, however, rather than every kind of health or social care (Flood, Marchildon, and Paech, 2018; Health Canada).

The United States instead retained a fragmented combination of employment-linked and individual insurance, charitable and public hospitals, direct payment, and targeted government programmes. The Social Security Amendments signed on 30 July 1965 created Medicare for older people and Medicaid through federal–state assistance for eligible low-income groups; they did not establish universal coverage (U.S. Social Security Administration). Beatrix Hoffman's history shows that access continued to be rationed through income, employment, age, race, region, and insurance status rather than by an explicit national allocation system (Hoffman, 2012).

Universities, hospitals, foundations, manufacturers, and public agencies could coordinate training, production, surveillance, and mass campaigns. They also classified patients, restricted credentials, collected bodies and data, and decided which communities merited investment. Segregation, settler jurisdiction, gendered labour, disability, income, immigration status, and rural distance shaped entry to both care and the historical record.

Large programmes hide indispensable labour. Nurses, midwives, household caregivers, laboratory assistants, technicians, factory workers, trial participants, sanitation staff, interpreters, community organisers, and patients carried a paper, score, vaccine, or drug into daily practice. Manufacturing quality, price, insurance, transport, staffing, and trust determined whether scientific capacity became accessible care.

The sources below do different work. Apgar's article establishes what her team proposed in 1953, not the score's entire later history. The Belmont Report states an official ethical framework, not compliance. Native Voices, CDC, Health Canada, and Social Security pages preserve testimony or institutional chronologies but also speak from within federal institutions. Academic histories are used to challenge heroic, administrative, and commemorative narratives.

This selective guide remains much thinner for Inuit and Alaska Native medicine, French Canada, slavery and reproductive medicine, Mexican and Asian migration, psychiatry and disability, occupational health, rural nursing, military medicine, queer health, and patient activism than for large twentieth-century institutions. Those gaps mark the collection's limits, not the subjects' historical importance.