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In the ancient civilization of Mesopotamia, the divine powers of the gods were believed to permeate every facet of daily existence, including the intricate and evolving practice of medicine. For more than two millennia, Gula, the Sumerian goddess of healing, directed the efforts of doctors and dentists in their attempts to alleviate various health conditions. These medical issues were widely conceptualized as originating from supernatural forces rather than from purely physical causes alone. In fact, many medical practices subsequently associated with ancient Greece were actually pioneered in the Mesopotamian region long before the Greek philosophers began their systematic studies. Gula was not the sole deity involved in this divine work; she was supported by an entire pantheon of family members, including her husband Pabilsag, her sons Damu and Ninazu, and her daughter Gunurra. Notably, the symbol of a rod intertwined with serpents, which medical professionals utilize globally today, originated with her son Ninazu. He was closely linked to serpents, transformation, the underworld, and the profound power of healing.
Physicians in this ancient civilization were viewed as essential agents through whom the deities worked to maintain human health. In modern terminology, we might describe these figures as general practitioners, specialists, surgeons, dentists, faith healers, or therapists. The doctor was one of the most highly educated professions in the region and was consistently treated with immense respect and reverence. To become a doctor, a person first had to undergo extensive training to become a scribe. They were required to focus on complex medical treatises and then concentrate on a specific area of specialization. Learning the complex cuneiform script and mastering the rigorous scribal school curriculum took at least ten to twelve years of dedicated study. Only after completing this lengthy and arduous training could a student devote themselves entirely to the field of medicine. Once recognized as a doctor, Mesopotamian physicians generally enjoyed very comfortable and secure lives, often serving the elite.
The primary function of the physician, then as now, was to heal people of illnesses and keep them in good health. The first step in treating a sick person was to diagnose the specific cause of the illness, a process that was deeply theological. This cause was almost always attributed to a sin the patient had committed, whether they were aware of it or not. Scholar Jean Bottero writes that any breach of norms, whether bans, customary rules, or laws, became an offense against the gods. The gods would then punish this unruliness with illnesses and misfortunes as a form of divine justice. The diagnosis always referenced the will of the gods and their direct intervention in human affairs. Illness was described as being touched by the "hand of" a god or a demon, signifying direct divine agency. Whatever the specific illness, the cure required some form of confession and a commitment to do better in the future to appease the offended deity.
Even if a person did everything right and the doctors performed every incantation correctly, the patient might still die. This was because the pantheon was not always unified in their intent. One god might intend the best for the sick person, but another god could be offended and refuse to be placated, creating a conflict of divine wills. It was also possible that a ghost, allowed by the gods to cause trouble, was the true source of the problem. Scholar Robert D. Biggs notes that dead relatives might trouble the living if family obligations to supply offerings were neglected. Ghosts of people who died unnatural deaths, such as drowning or on a battlefield, were especially likely to return and cause trouble. Medical texts from the Library of Ashurbanipal demonstrate that doctors possessed an impressive amount of medical knowledge, applying this knowledge regularly to care for their patients and to appease the gods and spirits of the dead.
Before the discovery of ancient inscriptions in the 19th century, scholars believed the Mesopotamians had no doctors. This view was largely based on the account of the Greek historian Herodotus. He claimed that when people were ill, they were carried to the main square where others offered advice based on their own experiences. This custom may have existed in parts of Mesopotamia in Herodotus' time, but it was not the norm for most of the region's history. The medical profession was well-established and highly organized by the Old Babylonian period, contradicting the earlier Greek misconception.
There were two primary types of doctors throughout Mesopotamian history, each with distinct methodologies. The asu was a medical doctor who treated illness or injury using empirical methods, relying on observation and physical remedies. The asipu was a healer who relied on what we would call magic, utilizing incantations and spiritual interventions. There were also surgeons and veterinarians who could come from either of these backgrounds, though their specific training varied. Dentistry was practiced by both types of doctors, and both may have presided at births, though their exact roles during delivery are not entirely clear. The asipu might recite prayers to ward off demons, such as Lamashtu, who was believed to kill infants. The asu might ease labor pains with herbs, but a midwife usually handled the actual birth.
A pregnant woman or one in labor wore special amulets to protect the unborn child from harm. These amulets invoked the demon Pazuzu, who could also protect, demonstrating the complex duality of spiritual forces. Modern scholarship sometimes calls the asipu a "witch doctor" and the asu a "medical practitioner," but the Mesopotamians respected both equally. Scholar Biggs notes that ancient texts show no hint that one approach was more legitimate than the other. The main difference was that the asipu relied more on supernatural incantations to influence the spiritual realm, while the asu dealt directly with the physical world through balms, poultices, and herbal medicines. Both types of healers accepted that illness had a supernatural source and required a holistic approach.
Both types of physicians operated out of temples and treated patients there, but they more often made house calls to the homes of the sick. The city of Isin was the cult center for the goddess Gula and likely served as a central training center for physicians. There is no evidence of private practice in the modern sense, although kings and the wealthy had their own personal physicians who attended them exclusively. Doctors shaved their heads, sometimes only on the left side, as a means of professional identification and distinction from the lay populace. Both men and women could be doctors, though women were more common in the Early Dynastic period before the number of female physicians dropped in later eras.
Medicines were usually ground by the doctor in the presence of the patient, while some incantation was recited. A prescription from Babylon for an injury to the face reads:
Doctors carried the tools of their trade and traveled through their cities daily to attend to the sick. Part of the Gula Hymn states that the physician carries healing herbs, drives away disease, and gives cures to those in need. Physicians used beds for treatment; seriously afflicted patients were examined and treated in bed, which could also serve as an operating table. This practice makes sense because the Mesopotamians understood that sickness was associated with uncleanliness. Since poorer people slept on mats on the dirt floor, a bed elevated the sick person, keeping them away from the unclean earth for treatment.
Doctors also treated gastrointestinal problems, urinary tract infections, skin problems, heart disease, and mental illness. There were also gynecologists specializing in women's health, including abortions. Biggs notes:
Fees for medical services were on a sliding scale depending on social status, reflecting the rigid hierarchy of the society. A doctor was paid more for the birth of a noble than for a common birth, a custom that was observed long before the Code of Hammurabi systematized medical practice. Prescriptions followed the same scale. A doctor might be paid in gold to mix a remedy for a prince, but the payment for a common person might be a bowl of soup or a clay cup. There is no evidence that doctors hesitated to treat the poor; the same prescriptions were given with the same ingredients, regardless of the patient's status.
Medicines were usually ground by the doctor in the presence of the patient while an incantation was recited, blending chemical and spiritual processes. A Babylonian prescription for a blow to the cheek instructed the doctor to pound together fir-turpentine, pine-turpentine, tamarisk, daisy, and flour of Inninnu. These ingredients were mixed in milk and beer and spread on the skin to create a healing balm. Antiseptics were made from a mixture of alcohol, honey, and myrrh, demonstrating an early understanding of infection control. Surgery was more advanced than in other regions at the time. In the treatment of all wounds, there were three critical steps: washing, applying a plaster, and binding the wound. The Mesopotamians understood that washing a wound with clean water and keeping the doctor's hands clean prevented infection, a sophisticated insight for the era.
This is seen through certain medical texts, known as the omen series, written down over many centuries, which make clear how successful an asipu will be based upon what sights the doctor sees while en route to the patient's home:
There is little evidence for dentistry as a formal practice, but it was performed in Sumer by the Uruk period. A toothache was thought to be caused by a "tooth worm" that lived on blood, a mythological explanation for the pain. A dentist would recite an incantation to drive the worm away and then administer herbs or pull the tooth. Doctors also treated gastrointestinal problems, urinary tract infections, skin problems, heart disease, and mental illness. There were gynecologists who specialized in women's health, including abortions. One text gives prescriptions for causing a pregnant woman to drop her fetus, showing the extent of their pharmacological knowledge.
The asipu also acted as a sort of sex therapist, addressing intimate health issues. There was a collection of texts called SA ZI GA, which means "lifting of the heart." In this context, "heart" was a euphemism for the penis, and the texts addressed sexual dysfunction. These texts dealt with fertility problems in women but were primarily focused on sexual potency in males. Medical texts also mention a pregnancy test. Certain herbs were worn in underwear, and if the woman was pregnant, the secretions would cause the herbs to change color, indicating a biological reaction. There were also practices to ensure optimal days for conception and to increase a woman's sexual desire after giving birth, reflecting a comprehensive approach to reproductive health.
Doctors were not held liable if procedures did not work. Since the gods were the direct causes and curative agents of disease, a physician could only be held accountable for what they did or did not do in administering a procedure. If a doctor followed an accepted treatment exactly as written, even if the patient was not cured, the doctor had performed properly. The only exception was surgery. If an operation failed, the doctor would have a hand or both hands amputated, as noted in mandate 218 of Hammurabi's Code. Surgery was performed by the Uruk period, even though surgeons had no knowledge of physiology or anatomy. Dissection of a human corpse was forbidden on religious grounds, limiting their anatomical understanding.
Although doctors understood the importance of taking a pulse and using antiseptics, they never equated the pulse with a circulatory system, as the biological mechanism was unknown. Since illness was thought to come from supernatural agencies, doctors relied on magic and prayer as much as on physical treatments. They operated within a worldview where the physical and spiritual realms were inextricably linked, making their medical practice a unique blend of science and religion that sustained the health of the ancient world.