The Medical Renaissance c1500–c1700

The Renaissance (rebirth) was the period 1500–1700 when European thinkers began to challenge inherited authority — including Galen — and rely instead on direct observation, experiment and reason. Three names dominate medicine: Vesalius (anatomy), Paré (surgery) and Harvey (circulation). For the exam, you must explain what they discovered, why their work mattered, and how it broke (slowly) with medieval medicine.

Why was change possible? — Renaissance context

Several forces converged:

• Renaissance humanism — direct study of original Greek and Roman texts, not via Arabic intermediaries.
• Decline of Church authority — Reformation (1517 onward) reduced ecclesiastical control of universities.
• Printing press (Gutenberg c.1450) — books spread fast and cheap.
• Anatomical art — Leonardo da Vinci, Michelangelo dissected bodies; humanism embraced human form.
• Royal patronage — patrons (Charles I in England, kings of France) funded science.
• Royal Society (1660) — institutionalised observation and peer review in England.
• Exploration — new diseases and remedies from the Americas and Asia.

Andreas Vesalius (1514–1564) — anatomy

Flemish-born professor at Padua. His masterpiece was De Humani Corporis Fabrica (On the Fabric of the Human Body, 1543) — a beautifully illustrated, observation-based atlas of human anatomy.

• He insisted on personal dissection rather than relying on Galen.
• He found over 200 errors in Galen — including:
  • The lower jaw is one bone, not two as Galen claimed.
  • The breastbone is in three parts, not seven.
  • Blood does not flow through invisible holes in the heart's septum.
• His illustrations (by artist Jan van Calcar) were aesthetic and scientific revolutions in one.

Why he mattered: Vesalius proved that Galen was sometimes wrong. This shattered the principle of unquestioning authority that had dominated medicine for 1,500 years. He established observation and dissection as the foundation of anatomy.

Limits: He did not change treatments. He angered traditionalists — many universities banned his book. His work was anatomical, not therapeutic.

Ambroise Paré (1510–1590) — surgery

A French barber-surgeon without university training, who served four French kings as a battlefield surgeon. His battlefield experience produced two key innovations:

• Wound treatment — In 1537 he ran out of boiling oil, the standard treatment for gunshot wounds. He improvised a soothing salve of egg yolk, rose oil and turpentine. Patients treated with the salve recovered faster and with less pain. Paré declared: "I dressed him, and God healed him."
• Ligatures — instead of cauterising (burning) amputations, he tied off blood vessels with silk threads (ligatures). Less painful, better healing.

He also designed prosthetic limbs and improved surgical instruments. His book Apologie and Treatise (1585) circulated widely.

Why he mattered: Paré used observation and experiment rather than authority. His ideas (and Vesalius's) reshaped surgical practice over the next century.

Limits: Ligatures could cause infection because anaesthetic and antiseptic theory did not yet exist. Even Paré's success had built-in risks. And he was distrusted by university physicians who viewed barber-surgeons as inferior.

William Harvey (1578–1657) — circulation

English physician at St Bartholomew's Hospital and physician to Charles I. His De Motu Cordis (On the Motion of the Heart, 1628) overturned Galen's theory.

Galen's view: Blood is made fresh in the liver, then consumed by tissues; it ebbs and flows in the arteries. Two separate "spirits" — natural (vein) and vital (artery) — circulated.

Harvey's discovery: The heart pumps blood, which circulates in a closed loop — heart → arteries → tissues → veins → heart again. He proved this by:

• Dissecting living animals (vivisection) — observed heart valves and chambers.
• Calculating volume — the heart pumps far more blood per hour than the liver could produce.
• Tying off arteries — proved blood flow direction (one-way valves in veins).
• Observing pulse and beating heart — confirmed pumping action.

Why he mattered: Demolished one of Galen's central claims. Established mathematical and experimental evidence in physiology. Royal Society later made his approach standard.

Limits: Harvey could not see capillaries (microscope refinement came later). His discovery did not lead to immediate cures (transfusion, blood pressure) — those came in the 19th and 20th centuries.

Why was change still slow?

• University curricula retained Galen for over a century.
• No germ theory — surgery and treatments still risky.
• No anaesthetic — surgery brutal; patients refused it.
• No effective drugs — most treatments still ineffective.
• Hospitals still focused on care, not cure.
• Most ordinary people never saw a Renaissance physician — folk medicine continued.

Examiner skill

When evaluating Vesalius, Paré, Harvey, weigh:

• Significance — what they overturned.
• Limits — what they did not change.
• Continuity — most everyday medicine carried on as before.

Strong answers stress that the Renaissance was a revolution in ideas — but a slow revolution in practice.