What does your urine say about your health? (Medieval Version)

During the Middle Ages, one way physicians would check on the health of their patients was to look at their urine. Uroscopies were very popular medieval texts that detailed what health problems one might have depending on the look and smell of someone’s urine. These are excerpts from a text called ‘On Urines‘, written by Giles Corbeil around the start of the 13th century.

An Expert Judge of Urine

The physician who wishes to be considered an expert judge of urine must consider with care the following things: what sort, what it is, what is in it, how much, how often, where, when, age, nature, sex, exercise, anger, diet, anxiety, hunger, movement, baths, ointment, drink. But the first four, which are particularly important, form the best basis of judgment. Health or illness, strength or debility, deficiency, excess, or balance, are determined with certainty by examination in this way.


If muddied with sediment

A large quantity of urine, darkened by a black cloudiness, and muddied with sediment, if produced on a critical day of an illness, and accompanied by poor hearing and insomnia, portends a flux of blood from the nose, depending on whether the other other signs are ominous or favourable, the patient will die or recover.

If the urine is livid

If the urine is livid, the lividity is partial or total. If total, it means the mortification of a member or of its humours. Livid near the surface, it suggests various things: a mild form of hemitriteus fever; falling sickness; ascites; synochal fever; the rupture of a vein; catarrh, strangury; an ailment of the womb; a flux; a defect of the lungs; pain in the joints; consumptive phithisis; the extinction of natural heat. These are the causes of lividity – interpret them according to other symptoms.


White in color

Thin urine, white in color, is a sign of spleen, dropsy, intoxication, nephritis, delirium, diabetes, rheumatism, black bile, epilepsy, dizziness, chill of liver, or (with a bilious fever) death; in the old it is a sign of debility or childishness; in those suffering in the neck or shoulders, of lipothymia; in women, it is a sign of a number of complaints of the womb; and it also signifies hemorrhoids and condylomata.

Wine colored

If the urine is wine colored, it means danger to health when it accompanies a continued fever; it is less to be feared if there is no fever. It can be produced when a caustic humor inflames the kidneys and liver; or when the renal vein ruptures; or when, its vessel broken, the menstrual blood passes from a woman’s body. Dancing, overmuch coitus, running and immoderate exercise produce the same signs in a healthy body. Blue-black urine follows this pattern too.

Rumblings of the guts

Swollen, airy, persistent bubbles rising to the top indicate crudeness of the humors causing the illness; also prolongation of the illness, with nephritis, headache, rugitum (rumbling of the guts), vomiting, and diarrhea.

The sure indication of health

Color, consistency, duration, form, and place are the determining characteristics of urinary sediment. The color should be white, the consistency continuous, the form conical, the place the bottom of the vessel, and the duration marked. If the sediment is all these – white, continuous, lasting, conical – digestion will be good, virtue strong, and natural action will flourish with a triple activity: it whitens, it cleanses, and it condenses, concentrates, and unites. This shows that the natural heat is dissipating ventosity and absorbing vapor; that the natural force is absorbing what is beneficial and resisting what it not; that nature’s actions are not interrupted or stopped. The sure indication of health derives from these signs.



A very limited quantity of urine, passed with difficulty, livid and oily, foreshadows death.

Urine tinged green indicates jaundice, spasm, severe fever, and finally death.

This translation is part of the book Medieval Medicine: A Reader, edited by Faith Wallis and published by the University of Toronto Press in 2010.

You can learn more about how urine was used in medieval medicine from these articles:

Signs and Senses: Diagnosis and Prognosis in Early Medieval Pulse and Urine Texts

A New Look at the Role of Urinalysis in the History of Diagnostic Medicine

Medical Prognosis in the Middle Ages: William the Englishman’s De urina non visa and its fortune


When Urine is like Snot – Middle English Uroscopy Texts

The Judgement of Urines

Examining urine is also used in modern-day medicine – you can learn more about it from de Ketham revisited: a modern-day urine wheel and What Does Your Pee Mean?