Our Approach · Origins · West Africa
Yorùbáland and the Atlantic diaspora · Ilé-Ifẹ̀ from c. 1000 CE, practiced today
The Yorùbá
A living West African medicine in which reading the case is a discipline of its own, separate from treating it.
Àṣẹ is the Yorùbá name for the vital force present in people, plants, words, and places, and Yorùbá medicine is built on keeping it in balance. A babaláwo reads a case through the Ifá corpus before any remedy is chosen. An oníṣègùn matches that reading to specific leaves. A bonesetter restores structure by hand. What the method tracks is a regulated bodily state, read without instruments. The Unified Model of Tone names that state tone.
forthcoming
Practiced
Continuously, in West Africa and across the Americas
Region
Southwestern Nigeria, Benin, Togo, and the Atlantic diaspora
Source corpus
Ifá: 256 odù, about 800 ẹsẹ each
Recognition
UNESCO Masterpiece 2005, Representative List 2008
The documentary record
What the record shows
Yorùbá medicine is practiced today, and the modern record of it is dated, counted, and published in journals. These are the points that carry the argument.
UNESCO proclaimed the Ifá divination system a Masterpiece of the Oral and Intangible Heritage of Humanity in 2005. It was inscribed on the Representative List of the Intangible Cultural Heritage of Humanity in 2008. (UNESCO)
The listing describes a practice resting on a system of signs rather than on any diviner's oracular power. Reading is a procedure, and a procedure can be taught and checked.
The Ifá literary corpus holds 256 odù, each subdivided into verses called ẹsẹ, with around 800 ẹsẹ per odù. UNESCO records the exact total as unknown and still rising. (UNESCO)
At that rate the corpus passes two hundred thousand verses. It works as a case library, held in trained memory, that a diviner consults before acting.
Rowland Abiodun records the standard translations of àṣẹ as power, authority, command, and vital force in all living and non-living things, and as a coming to pass of an utterance. (Abiodun, 1994)
Àṣẹ is a quantity carried by things and by people. A quantity can run high or low, and it can be acted on deliberately.
Ajala and colleagues at the University of Ibadan report that Yorùbá healing practitioners establish the causation of ill health before assuming the healing processes, and that the worldview sorts causation into preter-natural, natural, and cultural. (Ajala et al., 2019)
Diagnosis is a separate stage with its own rules. Nothing is applied until the case has been classified.
The same study found specialization among the traditional healers interviewed. General practitioners accounted for 26 percent, paediatrics 19 percent, reproductive health 17 percent, orthopaedics 14 percent, abdominal illness 12 percent, psychiatry 9 percent, and cardiology 3 percent. (Ajala et al., 2019)
Those percentages are shares of the healers interviewed. Yorùbá medicine divides its labor by organ system and by life stage, which is what accumulated case knowledge produces.
An inventory of Yorùbá plant use in southwestern Nigeria cataloged 493 flowering-plant species across 99 families. 418 of those species are used medicinally, which the authors report as 71 percent of all recorded uses, since one species can carry several. (Ajao et al., 2021)
Medicine is the dominant reason a Yorùbá household knows a plant at all. The pharmacopoeia was assembled by observation and it remains in daily use.
A mixed-method study of Yorùbá bonesetters across Ogun, Ondo, and Ọ̀yọ́ states interviewed 69 bonesetters, 130 of their patients, and 15 orthopaedic surgeons. 54.6 percent of those patients chose a bonesetter as their first treatment option. (Asa et al., 2018)
The manual tradition is a current first choice for injury. Referrals run in both directions between bonesetters and hospital surgeons.
Archaeologists date classic Ilé-Ifẹ̀, the earliest Yorùbá city, to roughly 1000 to 1400 CE. (Ogundiran, 2023)
The urban center where this knowledge system matured is dated by excavation. The depth of the tradition does not rest on memory alone.
Àṣẹ, the vital force
What àṣẹ names in Yorùbá thought
Àṣẹ is the force by which anything acts. Rowland Abiodun, writing in the Journal of Religion in Africa in 1994, gives its standard translations as power, authority, command, and vital force in all living and non-living things. He also renders it as a coming to pass of an utterance.
It runs first from Olódùmarè, the supreme being, and reaches the world through the Òrìṣà, the ancestors, and the living. Abiodun describes àṣẹ as the innate energy, power, and natural law believed to reside in animals, plants, hills, rivers, and human beings. Yorùbá practice turns on identifying that energy, activating it, and putting it to use.
Àṣẹ sits unevenly in the world, and it is not self-conferred. Abiodun records the Yorùbá position that àṣẹ must be received from a source outside of and higher than oneself, which is why Ifá is consulted before a community installs a ruler. The same logic governs the sickroom. A healer reads the state of a person before deciding what to do about it. Abiodun names the trained perception behind such reading ojú-inú, the inner eye, the faculty a Yorùbá artist needs to see the form and character of a subject.
Orí, the inner head
Why the Yorùbá place the steering of a life in the head
Orí is the head, and orí inú is the inner head, the seat of a person's destiny. Yorùbá practice treats the inner head as a thing that can be attended to directly.
The ilé orí, the house of the head, is the altar for venerating a person's inner head, and the orí itself sits inside it. Duke University's Sacred Arts of the Black Atlantic collection holds examples covered in cowrie shells, arranged densely across the surface as a prayer for the owner's wealth and for the orderliness of that owner's life. Talabi Adedoyin Faniyi, chief priestess of Ọ̀ṣun in Òṣogbo, explains that mirrors set on the four sides let the orí see what is invisible in the owner's world.
A Yorùbá person tends the head as the thing that governs how a life runs, at a fixed address on the body and by repeated physical practice.
Ifá and the babaláwo
The reading comes before the remedy
Ifá is the divination system attributed to Ọ̀rúnmìlà, the Òrìṣà of wisdom, and the babaláwo is its priest and diviner. UNESCO records the mechanism. The babaláwo works with sacred palm nuts and a divination chain, and the result identifies one of the 256 odù by its divination signature.
The diviner then inquires into the causation and the extent of the illness through the cast. Ajala and colleagues record that diagnosis also involves medical observation of the patient and the taking of a medical history. Ifá healers source treatment from the verses, most of which carry herbal recipes for treating illness.
Ifá separates three things that most systems run together. The classification of the case comes first. The observation of the body and its history comes alongside it. The remedy comes last, and it is selected from a corpus rather than improvised.
The odù corpus
A case library held in trained memory
The 256 odù are the chapters of the Ifá corpus, and the ẹsẹ are their verses. UNESCO puts the count at around 800 ẹsẹ per odù, records the exact total as unknown, and notes that the number keeps rising because the corpus is still being added to.
The verses carry Yorùbá history, language, beliefs, cosmovision, and contemporary social issues. Among them sit the precedents a diviner needs: what a trouble of this shape turned out to be before, what was done, and what followed. Wande Abimbola, whose translated selection Sixteen Great Poems of Ifá was published by UNESCO in 1975, is the scholar who first brought the corpus into print at scale.
Transmission runs by apprenticeship. Ajala and colleagues report that the duration of training is not fixed, and that in Ifá herbal practice an apprentice graduates when the master practitioner judges the conduct satisfactory. UNESCO records the pressure on that transmission now, as colonial legacies and religious pressure reduce the number of young people entering the priesthood.
Ọ̀sanyìn and ewé
Who holds the knowledge of leaves
Ọ̀sanyìn is the Òrìṣà of herbal medicine, and Yorùbá accounts place the knowledge of healing with him first. Ajala and colleagues record the legend directly: Ọ̀sanyìn taught Ọ̀rúnmìlà the art and science of healing, which makes the deity of divination the first student of the deity of medicine.
Ọ̀sanyìn is remembered for command of botany, of human physiology, and of the application of botanical elements in healing. The oníṣègùn, the herbalists, work in his line. They do not rely mainly on Ifá verses, they cut across religions, and their expertise is the plant itself.
An inventory published in Heliyon in 2021 cataloged 493 flowering-plant species in 99 families in Yorùbá use, and 418 of them are used medicinally. Preparation is specified as tightly as species. Abiodun records that oògùn, the medicinal preparations, are taken by mouth or absorbed into the bloodstream through small cuts made at designated places on the body, the upper and lower lips among them. Route and site are part of the medicine, not an afterthought about how to deliver it.
How the pharmacopoeia was built
Where Yorùbá plant knowledge comes from
Ajala and colleagues name the sources of Yorùbá healing knowledge. It passes through organized apprenticeship with a master practitioner, through inheritance from a parent who healed, through documentation shared among trusted practitioners, and through the observation of nature.
Observation of nature has a stated method. Hunters traveling in the bush examine how plants behave and how they respond to different conditions, then judge whether a plant or an animal can be used in healing. Practitioners also watch what a plant does to an animal that eats it, and take the reaction observed in the animal as the reaction a person will have.
Inference from an animal response to a human response is the logic behind preclinical testing. The Yorùbá reached it without a laboratory, ran it across generations, and kept the results. An inventory of 493 species is what that method leaves behind.
Ara, ọkàn, ẹ̀mí
How the Yorùbá define health
Health in Yorùbá construction is a complete state of wellness. Ajala and colleagues, following the medical sociologist Ayodele Samuel Jegede, define it as the ability to eat, drink, sleep, play, walk, talk, laugh, breathe, and defecate, together with the ability to remain emotionally stable.
Every inability counts as illness, so a failure at any one of those capacities is a failure of the whole person. The person in question is composed of ara, the body, ọkàn, the heart and mind, and ẹ̀mí, the animating spirit, and Yorùbá thought holds these together rather than apart.
Illness therefore has to be located before it is treated. Causation is sorted as preter-natural, natural, or cultural, which is to say it is traced to a broken relationship, to weather and infection, or to the way a person has been living. Two of those three categories are things a person can change.
Yoruba healing practitioners establish the causation of ill health before assuming the healing processes.
Ajala and colleagues, University of Ibadan · Anthropology and Ethnology Open Access Journal, 2019The bonesetter
The hands that set the bone
Yorùbá bonesetting is manual medicine with a documented technique. The bonesetter reduces a fracture or a dislocation by hand, then immobilizes the limb with splints of bamboo stick, rattan cane, or palm-leaf axis, bound with cotton thread or cloth.
A review of 31 published Nigerian studies (Dada et al., 2011) describes the binding held tight for the first two to three days, then released intermittently. Massage and manual traction of the affected bone are applied alongside it. The same review reports that about 85 percent of patients with fractures in Nigeria present first to a traditional bonesetter, and it records the complications that follow binding left too tight.
In the 2018 survey of Yorùbá bonesetters across Ogun, Ondo, and Ọ̀yọ́ states, 54.6 percent of the 130 bonesetter patients interviewed had chosen a bonesetter first. 93.3 percent of the 15 orthopaedic surgeons interviewed had received patients from bonesetters, and 91.2 percent of the 69 bonesetters had received patients from hospitals. Both sets of authors argue for training and integration.
The craft passes down families and through apprenticeship. What it applies is graded manual force, chosen for the site, the direction, and the duration, against a structural problem the practitioner has already assessed by hand.
Practiced today
What Yorùbá medicine looks like now
Yorùbá healing runs in registered clinics. Ajala and colleagues describe traditional clinics in Òṣogbo, Ibadan, and Ọ̀yọ́ using stethoscopes for examination, thermometers for temperature, and written medical records, with hospital beds installed for admission.
Some traditional orthopaedic clinics in Ibadan use crutches and plaster of Paris. Educated practitioners have formed professional associations, registered their clinics with government agencies, and specialized in maternal and child care, in orthopaedics, and in mental health. Herbal preparations are dosed, preserved, and refrigerated.
The tradition also crossed the Atlantic and held. Sheneese Thompson, writing in Yoruba Studies Review in 2022, argues that the organized and urban structure of Yorùbá Òrìṣà practice made it portable. Yorùbá deities became the most broadly worshipped African deities in the Black Atlantic, despite Yorùbá people forming a small share of those imported to Trinidad, Brazil, and Cuba. UNESCO records Ifá practice today among the Yorùbá and among the African diaspora of the Americas and the Caribbean.
The convergence
What the Yorùbá documented, and what it is called now
Yorùbá healers had no instruments and no anatomy of the nervous system. They built a medicine around a bodily state that can be read, classified, and returned toward balance, working from the cast, the case history, the appearance of the patient, and the feel of the tissue. Independent traditions across the world arrived at the same short list of observations, which is evidence that the state itself is real and detectable by an unaided observer. The Unified Model of Tone names that state tone and measures it.
- Ifá fixes a reading before any remedy. The case is cast to one of 256 odù, the healer takes a medical history, and causation is classified as preter-natural, natural, or cultural before treatment begins.Prediction, where a system commits to a model of what is happening before it acts.
- Ewé are chosen by species out of 493 cataloged, and oògùn is specified by route, taken by mouth or entered at designated places on the body.Input quality, where the character, the site, and the dose of an input decide the response.
- Health is defined as the ability to eat, sleep, walk, talk, laugh, breathe, and stay emotionally steady, so a failure at any one of them counts as illness of the whole person.Coupling, the linkage that makes separate parts behave as one system.
Common questions
Frequently asked
What is àṣẹ in Yorùbá thought?
Àṣẹ is the Yorùbá name for the vital force by which anything acts. Rowland Abiodun gives its standard translations as power, authority, command, and vital force in all living and non-living things, and as a coming to pass of an utterance. It runs from Olódùmarè through the Òrìṣà, the ancestors, and the living, and it sits unevenly in people, plants, places, and words. Yorùbá healing is the work of reading it and bringing it back to balance.
What is Ifá divination?
Ifá is the Yorùbá divination system attributed to Ọ̀rúnmìlà, the Òrìṣà of wisdom. A babaláwo works with sacred palm nuts and a divination chain, and the result identifies one of 256 figures called odù. Each odù carries verses called ẹsẹ, around 800 apiece by UNESCO's count, and those verses hold the precedents and the herbal recipes a diviner draws on. UNESCO describes Ifá as resting on a system of signs rather than on oracular power.
Who is a babaláwo?
A babaláwo is a Yorùbá diviner-priest of Ifá, commonly translated as father of secrets. The babaláwo casts to identify the governing odù, then reads its verses to establish what has gone wrong and what should follow. Ajala and colleagues record that the consultation also includes medical observation of the patient and the taking of a medical history. Training runs by apprenticeship with no fixed duration, and the apprentice graduates when the master practitioner judges the conduct satisfactory.
Is Ifá recognized by UNESCO?
Yes. UNESCO named the Ifá divination system a Masterpiece of the Oral and Intangible Heritage of Humanity in 2005. It joined the Representative List of the Intangible Cultural Heritage of Humanity in 2008 under Nigeria. The listing describes a corpus of 256 odù subdivided into verses called ẹsẹ, and records the exact number of verses as unknown and still rising. It names the pressure on transmission from colonial legacies and religious hostility toward the practice.
What is ewé, and who is Ọ̀sanyìn?
Ewé means leaves, and Ọ̀sanyìn is the Òrìṣà of herbal medicine. Ajala and colleagues record the Yorùbá account that Ọ̀sanyìn taught Ọ̀rúnmìlà the art and science of healing, and that Ọ̀sanyìn commanded botany, human physiology, and the application of plants in treatment. The herbalists, the oníṣègùn, work in that line. A 2021 inventory cataloged 493 flowering-plant species in 99 families in Yorùbá use, of which 418 are used medicinally.
How do the Yorùbá define health?
As a complete state of wellness. Ajala and colleagues, following Ayodele Samuel Jegede, define health as the ability to eat, drink, sleep, play, walk, talk, laugh, breathe, and defecate, together with emotional stability. Every inability counts as illness, so a failure at one capacity is a failure of the whole person. That person is composed of ara, the body, ọkàn, the heart and mind, and ẹ̀mí, the animating spirit, and Yorùbá thought holds the three together.
Is Yorùbá medicine still practiced?
Yes, in West Africa and across the Americas. Ajala and colleagues describe registered Yorùbá clinics in Òṣogbo, Ibadan, and Ọ̀yọ́ using stethoscopes, thermometers, written records, and hospital beds, with plaster of Paris in some traditional orthopaedic clinics in Ibadan. A 2018 survey found that 54.6 percent of 130 bonesetter patients had chosen a bonesetter first. UNESCO records Ifá practice among the Yorùbá and among the African diaspora of the Americas and the Caribbean.
What does the Unified Model of Tone say about Yorùbá medicine?
That Yorùbá healers are reading tone without instruments. Ifá fixes a classification of the case before any remedy, which is prediction working as a clinical stage. Ewé chosen by species, and oògùn specified by route and site, are input quality. Health defined as many capacities standing or failing together is coupling. The model does not adopt àṣẹ as its mechanism. It holds that the state Yorùbá healers read and act on is the state it now measures.
Keep reading
Where this connects
- Tone is the regulated state Yorùbá healers read in the patient before choosing a remedy, defined and measured.
- Prediction is why Ifá classifies the case first and treats second, rather than answering the symptom in front of it.
- Input quality is why the species of a leaf, and the route oògùn takes into the body, are specified as tightly as the dose.
- Coupling is the modern account of a definition of health in which eating, sleeping, walking, and emotional steadiness stand or fall together.
- Set point is the value a body defends, which is what the Yorùbá healer aims at when returning a person to a complete state of wellness.
- Nubia and Kush worked the same continent with a written medical record and a court of trained physicians.
- Bantu and Nguni divide diagnosis from treatment between two named practitioners, as the Yorùbá divide babaláwo from oníṣègùn.
- Ethiopia kept a manuscript pharmacopoeia alongside a living herbal practice, the written counterpart to the Ifá corpus.
Sources
References
- UNESCO Intangible Cultural Heritage. Ifa divination system. Proclaimed a Masterpiece 2005, inscribed on the Representative List 2008 (Nigeria).
- Abiodun, R. Àṣẹ: Verbalizing and Visualizing Creative Power through Art. Journal of Religion in Africa, 1994;24(4):309 to 322.
- Ajala, A. S. et al. Conceptualization of Traditional Healing System in Yoruba Worldviews. Anthropology and Ethnology Open Access Journal, 2019;2(2):000126.
- Ajao, A. A., Mukaila, Y. O. and Sabiu, S. Wandering through southwestern Nigeria: an inventory of Yoruba useful angiosperm plants. Heliyon, 2021;8(1):e08668.
- Asa, S. S., Ilori, M. O. and Akinyoola, L. A. Healthcare Delivery among Yoruba Bonesetters in Southwest Nigeria and the Need for Collaboration with Orthodox Orthopedic Healthcare Services: A Mixed Method Study. Yoruba Studies Review, 2018.
- Dada, A. A., Yinusa, W. and Giwa, S. O. Review of the practice of traditional bone setting in Nigeria. African Health Sciences, 2011;11(2):262 to 265.
- Ogundiran, A. Classic Ilé-Ifẹ̀: A Consideration of Scale in the Archaeology of Early Yorùbá Urbanism, AD 1000 to 1400. Journal of Urban Archaeology, 2023;7.
- Thompson, S. The Proliferation of Yorùbá Religion in the Atlantic during the Nineteenth Century: The Portability of the Orisha. Yoruba Studies Review, 2022;7(2).
- Sacred Arts of the Black Atlantic, Duke University. Yoruba House of the Head (Ile Ori) with Ori, catalog D045.
- Abimbola, W. Sixteen great poems of Ifá. UNESCO, 1975.
- Jegede, A. S. The Yoruba Cultural Construction of Health and Illness. Nordic Journal of African Studies, 2002;11(3):322 to 335.
Last updated 2026-08-10