What Was Healthcare Like in the Middle Ages?
“Let food be thy medicine and medicine be thy food.” — Hippocrates
The Renaissance rewrote the rules of art, science, philosophy and medicine. As these fields flourished, doctors began asking an obvious question: How does the human body actually work?
The Middle Ages were decidedly before all that.
Spanning the 5th to the late 15th century, the Middle Ages were known for their less-than-stellar healthcare. Think bearded scholars reviewing patients’ symptoms before throwing up their hands and saying, “I think it’s ghosts!”
We’re exploring the history of healthcare — because you can only appreciate how far medicine has come by looking at where it started.
Rome Falls. Science Stalls.
When Rome collapsed in the 5th century, it took Greek, Roman and Egyptian intellectual traditions down with it. Medical knowledge didn’t just stagnate; it reversed.
Enter Emperor Constantine. After he converted to Christianity, the Roman Catholic Church rose to power across Western Europe and effectively controlled the direction of medicine for roughly a thousand years. Deviate from Church doctrine and you were not only wrong but a heretic, too.
Under this framework, sickness wasn’t a biological event; it was a punishment from God. The cause and cure of any disease came down to three things:
- Sin
- Heavenly influences
- Destiny
Thoughts and prayers weren’t just a comfort: They were the prescription.
What Did Medieval Doctors Have to Work With?
Medieval physicians weren’t completely in the dark. Alongside spiritual explanations, they drew on Greek and Roman texts preserved in monastery libraries, doing the best they could with what survived.
The dominant framework was humoral theory. According to the AMA Journal of Ethics, physicians believed the body contained four fluids, or humors, each tied to a classical element:
| Humor | Characteristics | Element |
| Yellow bile | Hot and dry | Fire |
| Phlegm | Cold and wet | Water |
| Black bile | Cold and dry | Earth |
| Blood | Hot and wet | Air |
Health meant these humors were in balance, and illness meant something had thrown them off. This is where the phrase “in good humor” comes from: balance your fluids, balance your moods. The moon, the planets, your diet, your environment — all of it could tip the scales.
A patient with a nosebleed? Better try bloodletting. Open a vein — or apply leeches and let them go to town. Not sure bloodletting is the right call? Consult the zodiac chart first to confirm the planets are properly aligned.
It’s all absurd by modern standards, but humoral theory was actually a step forward. Ancient Greek physician Hippocrates laid the groundwork by arguing that illnesses had natural, not supernatural, causes. That forced physicians to actually observe each patient’s diet, exercise habits, environment and physical condition.
The logic was flawed, but the instinct to observe was spot on.
Herbal Remedies and the People Who Used Them
Visiting a doctor was no easy feat during the Middle Ages. Most medieval doctors served the wealthy. Everyone else turned to a much larger network of healers: monks and nuns in monastery infirmaries, apothecaries, local herbalists, midwives and barber-surgeons, who handled everything from bloodletting to tooth extractions to wound care. The treatments were surprisingly varied:
- Aching joints: Henbane and hemlock
- Headaches: Rose, lavender, sage and hay
- Fever: Coriander
- Stomach pain: Wormwood, mint and balm
- Lung issues: Licorice and comfrey
- Wounds: Cleaned with vinegar or mint
- Infection: Myrrh as an antiseptic
Some of these remedies had real merit. Myrrh does have antimicrobial properties, and vinegar is a legitimate wound cleanser. Others … not so much. Though medieval physicians did their best, many people suffered and died from conditions that are easily treated today.
Galen: The Guy Who Got a Lot Wrong (And a Lot Right)
Much of medieval medicine leaned heavily on the work of Galen, a 2nd-century Greek physician working in Rome whose influence stretched well into the Middle Ages.
Known for expanding on Hippocrates’s humoral theory, Galen got a lot wrong. (He believed the liver produced blood and sent it out through the veins to be used up by the body’s tissues — with no return trip.) But cut him some slack: Galen was working almost entirely from animal dissection, since dissecting human corpses was forbidden in the Roman Empire.
He also made genuine contributions to understanding human musculature and the spinal cord, and he correctly identified that urine is produced in the kidneys, not the bladder, overturning a long-held assumption. Galen’s texts shaped what physicians believed, taught and practiced for more than a thousand years.
While medieval medicine got a lot wrong, it also kept this flame of medical inquiry alive: asking questions, observing patients and building on what came before. It took centuries of trial, error and hard-won discovery to get from humoral theory to modern healthcare. But it all started here.
Key Takeaways
Here are some key points to keep in mind the next time you’re wondering about the history of healthcare.
How did the Roman Catholic Church view illness during the Middle Ages?
Simple: You were sick because you sinned. Under the Church’s framework, disease wasn’t a biological event; it was divine punishment. The cause and cure of any illness came down to sin, divine influences and destiny. Doctrine, not observation, drove the conversation.
What was humoral theory?
The big idea in medieval medicine. Physicians believed the body contained four fluids — called humors — each tied to a classical element: yellow bile (fire), phlegm (water), black bile (earth), and blood (air). Healthy? Your humors were balanced. Sick? Something — the moon, your diet, your environment — had thrown them off.
Where did ordinary people go for healthcare during the Middle Ages?
Not to a doctor — those were reserved almost exclusively for the wealthy. Most others turned to a monastery, apothecary, midwife, barber-surgeon or local herbalist and hoped for the best.
What herbal remedies did medieval healers use?
More than you’d expect — and some actually worked. Common treatments included:
- Aching joints: Henbane and hemlock
- Headaches: Rose, lavender, sage and hay
- Fever: Coriander
- Stomach pain: Wormwood, mint and balm
- Lung issues: Licorice and comfrey
- Wounds: Cleaned with vinegar or mint
- Infection: Myrrh as an antiseptic
Who was Galen, and why does he matter?
Galen was a 2nd-century Greek physician who became the backbone of medieval medicine, largely by expanding on Hippocrates’s humoral theory. He got a lot wrong, but he also made real contributions to understanding human musculature and the spinal cord. He was also the first to correctly identify that urine is produced in the kidneys, not the bladder. Flawed, yes. Irrelevant, no.
Bring Your Medical Knowledge Into the Future
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Sources:
https://pmc.ncbi.nlm.nih.gov/articles/PMC3573364
https://www.bbc.co.uk/bitesize/articles/zk4nf82#zysq2v4
