Medicine and Healing
The knowledge system of the onisegun, the categories of oogun, what pharmacological research has and has not confirmed about Yoruba herbal medicine, and the specialist practitioners.
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The knowledge system of the onisegun, the categories of oogun, what pharmacological research has and has not confirmed about Yoruba herbal medicine, and the specialist practitioners.
The Yorùbá wey dem quote, the proverbs, oríkì, ẹsẹ Ifá, word list headwords, Odù names and citations dey exactly as the corpus record dem, for every language.
Yoruba medicine na complete knowledge system wey get im own understanding of wetin dey cause sickness, im own way to diagnose wetin dey do person, im own list of herbs and materials wey dem dey use treat sickness, and im own way wey specialists take divide work. Right now, plenty research on pharmacology dey go on about am, even though di research no balance for everywhere. Dis file dey try do two things together wey people dey normally do separately: to explain di system as e take stand on im own, and to report clearly wetin laboratory and clinical research don establish about am. Dis one mean say e go talk where dem don separate active compounds and show say e dey work, and e go still talk clearly where dem never document di practice or where research don show say e dey cause harm. To just condemn am or to just dey praise am no go give correct report.
First thing to clear: e no make sense to describe Yoruba medicine as just spiritual healing wey dem mix small herbs put. Wetin Buckley find out na say di main foundation of Yoruba medicine resemble conventional medicine well well, because e dey aim to kill or pursue tiny invisible organisms, kòkòrò, and worms, aràn, comot from body, wey dem believe say dey live inside small bags inside person body . Dem get their own indigenous theory about wetin dey cause sickness and how to pursue dem comot, and na di herbal medicine dem dey use fight dem. Di spiritual part dey stand side by side with dis one, no be say e replace am.
Di classification wey Oyebola do, wey dem publish for Social Science & Medicine for 1980, na im still be di standard division and e identify seven categories .
Babaláwo. Di Ifá diviner, wey im direct meaning na father of secrets. Im primary work na divination, and im medical role dey follow from there: e dey establish wetin dey do person and why e happen, wey fit include spiritual cause, e dey prescribe di sacrifice or observance wey person must follow, and e dey prescribe or refer person for materia medica. Ifá self carry plenty botanical and medical knowledge inside di ẹsẹ Ifá, di verses wey dey attached to di odù, so part of wetin babaláwo dey learn na pharmacological training wey dem pass down through verse wey dem memorize. Section 05 go treat Ifá.
Oníṣègùn, wey dem still dey call adáhunṣe. Di real herbalist: im direct meaning na owner or person wey get medicine, from oògùn, wey mean medicine . Na dis specialist dey prepare and give medicine. Oyebola and other scholars distinguish adáhunṣe as healer wey get di skill by himself instead of through long formal training , though people dey use di names loosely and their work dey overlap for practice.
Aláṣọtẹ́lẹ̀. Di soothsayer or seer, wey im diagnostic method no follow di formal system of Ifá.
Olóòṣà or abọ́rè. Di òrìṣà priest, wey im healing power dey tied to particular deity and di sicknesses wey follow dat deity. Di connection between specific òrìṣà and specific sicknesses get system and no be just arbitrary: Ṣọ̀pọ̀ná/Obalúayé with smallpox and epidemic skin disease, Ọ̀ṣun with fertility and children health, and so on. Dis one belong to section 06.
Aláwo ewé and the market herb sellers, di ẹlẹ́wé or "ọlọ́mọ ewé", people wey dey trade medicinal plants. Di category of traditional pharmacists wey Oyebola identify na real occupational division: many times, di person wey know, gather, and sell di material no be di person wey dey prescribe am, and market herb stall na institution on im own right.
Specialists. Traditional bone-setters, traditional psychiatrists, traditional birth attendants or midwives, and di olola, di specialist for cutting, wey im work include circumcision, facial marks (ilà) and scarification .
The miscellaneous category. Àáfáá, Muslim clerics wey dey practice Islamic healing wey include to write and wash Quranic text, and àlàdúrà, Christian spiritual healers . Say dem dey inside classification of Yoruba traditional healers no be category error: Yoruba medical field absorb Islamic and Christian healing practices, and na di same patients dey consult dem, many times one after di other.
Oògùn na di general word for medicine, and wetin e cover wide pass wetin di English word dey cover. E include preparations to cure disease, but e still include preparations for protection, for success, for love, to cause harm, and to boost capacity. Na dis wide scope make Western categories fail pass, because English dey divide "medicine" from "charm" and Yoruba no dey divide dem, and di underlying logic na say all of dem na application of di same knowledge of substances and words to change how things go turn out.
Dem dey usually group preparations by their form and mode: àgbo, decoction or infusion wey person dey usually drink, wey be di most common form; agunmu, powder wey dem make by grinding dry material, wey person dey take inside pap or food; ọṣẹ, medicated soap for washing; ètù, powder wey dem dey use differently; ìpáyà and other applications wey dem dey rub enter cuts for skin, wey be administration method wey no get Western equivalent and get serious infection risk; ààbò and ìṣẹ́tì, protective preparations wey person dey wear or keep.
People believe say two components dey act together inside most preparations. Di material component na di plant, animal, or mineral substance. Di verbal component na di ọfọ̀, di incantation, wey dem dey speak over di preparation. Di Yoruba explanation of how medicine dey work include di two things, and di ọfọ̀ frequently dey depend on di name of di plant, as e dey use tonal and etymological connection between di name of di ingredient and di result wey person want. Dis one mean say from inside di system, di incantation no be just decoration, and to replace one plant with another one wey get similar properties but different name no be neutral matter. E still mean say pharmacological testing of di substance dey answer only part of wetin di practitioner dey claim, point wey make sense to state clearly for both directions.
Ewé, leaf, stand for all di botanical body of di tradition. Di Yoruba proverb ewé ni oògùn, leaf na medicine, state di central position plainly, and di claim wey follow am inside Ifá literature say no plant dey wey no be medicine show say their botany get system and no be just accidental.
Di knowledge really wide well well. Yoruba herbalist-dem dey separate and name hundreds of different plant species, dem know where dem dey grow and which season dem dey come out, dem know which part to use and when to pluck am, and dem dey mix dem together. Dis kind deep knowledge about plant names na wetin ethnobotanical survey work don dey document since di 1970s, and di surveys consistently dey record big collection of medicine where different practitioners dey agree well well on which plant dey treat which sickness. Dis agreement itself na proof say na systematic knowledge wey dem dey pass down, no be say person just dey make am up on di spot.
Na here precision matter pass, so dem arrange di claims step by step.
Di precedent really dey. Two of di most important drugs for di history of medicine come out from dis exact kind of tradition: quinine from Cinchona and artemisinin from Artemisia annua. Di review literature describe artemisinin as di biggest achievement for ethnopharmacological research inside twentieth century, and na im be di foundation for artemisinin-based combination therapy today . So di general idea say traditional antimalarial botany fit produce real drugs no be speculation, na established fact, and na why dis research programme dey exist.
Specific Yoruba antimalarial plants don show say dem get antiplasmodial activity. Di cases wey dem study pass, from di systematic review wey Oladeji and colleagues write inside Scientifica :
Enantia chlorantha, wey people know as awópa or dòkítà igbó (forest doctor) for Yoruba, and wey dey among di Yoruba antimalarial plants wey dem dey mention pass . Di active alkaloid wey dem isolate na jatrorrhizine, with reported ED50 values of 0.34 mg/g for di ethanolic extract and 6.9 mg/g for di aqueous extract against Plasmodium yoelii . One recent study on di aqueous extract from di stem bark report preclinical findings wey support substantial antimalarial capacity, and di study describe am as scientific validation for di ethnobotanical use .
Morinda lucida, Yoruba òrúwo, also dey among di ones wey dem dey mention pass . Bioassay-guided isolation don identify antimalarial triterpenoid acids like asperulosidic acid and asperuloside, with reported parasitaemia reduction of 51.52 percent against P. berghei NK65 and chemosuppression between 39.8 to 90.5 percent .
Alstonia boonei, Yoruba awùn or àhun, with reported chemosuppression from 0.2 to 74.8 percent inside mice wey get P. berghei . Make una note di range: dat spread across different studies na part of di finding itself, and e mean say di material potency no steady under di conditions wey dem test am.
Azadirachta indica, neem, dòngòyárò, wey get gedunin as one of di active constituents, with reported dose-dependent suppression of 69.65 to 78.32 percent .
Cymbopogon citratus, lemongrass, kóóko oyinbo, wey get geranial inside di essential oil, and wey get reported IC50 of 4.2 micrograms per millilitre against P. falciparum .
Wetin dat evidence prove and wetin e no prove. E prove say dis plants get compounds wey get clear antiplasmodial activity wey person fit measure, and dis one na real and solid proof for di ethnobotanical record: di herbalists identify plants wey dey do sometin, and dem identify dem without any of di modern apparatus wey dem later use demonstrate di activity. Dat na serious epistemic achievement and e make sense make dem talk am out.
E no prove say di traditional preparation, at di traditional dose, dey cure malaria for human beings. Almost all di cited work na in vitro or inside rodent models, dem never standardise di extracts, potency dey vary well well with di plant material and di extraction method, and controlled clinical trials for human beings almost no dey at all. Di gap between "dis extract dey suppress parasitaemia for mice" and "dis decoction dey treat malaria for human being" na di whole drug development pipeline, and dis plants never pass through dat whole process. Safety dimension also dey wey dem don document: at least one study don examine abortifacient properties of common African indigenous antimalarial plants inside pregnant mice, with implications for maternal and fetal health . Di plants get active chemical power, and na dis same fact dey make dem potentially useful and also potentially dangerous.
Where efficacy no dey documented. For di large majority of di Yoruba pharmacopoeia and for most conditions apart from malaria, pharmacological evaluation no dey at all. Say evidence no dey here na genuinely say dem never test am, no be say dem don test am see say e no dey work, because research effort don concentrate on malaria for clear funding reasons. Person wey dey read no suppose conclude from di malaria results say di whole tradition get general validation, and person no suppose conclude from di silence for other areas say di tradition generally wrong. Most of am simply never enter test.
Yoruba diagnosis dey operate on two registers at di same time, and di practitioner dey move between dem.
Di first one na proximate and physical: wetin di symptoms be, wetin di patient chop, which sickness dey go round, wetin di body dey show. Dem dey match preparations to symptoms in a way wey any clinician go recognise as symptomatic treatment.
Di second one dey ask why na dis person and why now. Na here divination dey enter, and na where causes wey biomedical account no contain dey show: taboo wey person break, unfulfilled obligation to an òrìṣà or ancestor, curse, hostility from enemy, action of àjẹ́, or di working out of person orí and destiny. Di Yoruba framing no be say di physical cause na illusion, but say e no complete on im own, since e no explain why na dis particular patient dem select.
Di practical consequence be say treatment dey get two parts most times: di material one and di ritual or restitution one, and if patient no get well, dem dey put di blame say dem neglect di second one, no be say di first one no correct. Dis kind structure dey make am hard to prove say di system wrong from inside, wey be accurate observation about am and no be say person dey attack am, and na feature wey Yoruba medicine share with most pre-modern medical systems, including di European ones.
Di other practical consequence na medical pluralism. Today, Yoruba patients dey move between traditional healers, church and mosque healing centres, patent medicine vendors, and hospital, many times for di same sickness, and na cost, distance, wetin dem feel say cause am, and wetin dem don try before wey no work dey guide dem choice. To talk say patient dey choose "traditional" instead of "modern" medicine dey give wrong picture of wetin most people dey actually do.
Traditional bone-setting na di specialisation wey actual data about results dey, and di situation get two sides wey need proper reporting instead of to just conclude for one side.
Di practice dey widespread and people dey use am well well, and di reasons why patients prefer am dey documented: lower cost, availability, say e dey near dem, and di feeling say e dey heal fast pass orthodox hospital treatment . For country wey no get enough orthopaedic capacity, traditional bone-setter na dem people dey easily reach most times.
Di results no good for many kinds of injury. One research for Nigeria on top results show say 49.0 percent of patients talk say di treatment dey satisfactory, 40.8 percent talk say e fair, and 10.2 percent talk say e no satisfactory at all, with complications like pain, malunion or nonunion, joint stiffness, and contractures wey happen for 61.2 percent of dem . Di main complications wey research literature record na nonunion, malunion, traumatic osteomyelitis, and limb gangrene . For one comparison, pass half of di people wey go meet traditional bone-setter get malunion, and one-quarter get nonunion .
Di important point be say di results no be di same for every kind injury. Results dey good for closed fractures of di shafts of di humerus, ulna, radius, and tibia, but e bad for peri-articular and open fractures . Dis result make sense: closed shaft fractures mostly need make dem hold di bone steady (immobilisation), wey traditional practitioner fit provide, but open fractures and di ones wey touch joints need debridement, infection control, and anatomical reduction, wey dem no dey do. Gangrene and osteomyelitis cases dey happen because of tight splint wey dem tie round di limb and open wounds wey dem no treat.
Di direction wey research dey follow now come out from dis. Feasibility studies don check whether dem fit train traditional bone-setters as technicians make dem join di health system instead of to push dem comot , wey be serious proposal since na dem dey treat big part of fractures for Nigeria whether di health system approve am or not.
Midwifery. Traditional birth attendants still remain major providers of maternity care for Yoruba areas, especially for rural places. Di practice dey include herbal preparations wey dem dey use during pregnancy and labour, massage, positioning, and di ritual plus social management of childbirth and di naming ceremony wey dey follow. Di evidence situation resemble bone-setting: for deliveries wey no get complication, di results fit dey acceptable, but di palava dey concentrate for obstructed labour, haemorrhage, and sepsis, wey need intervention wey di attendant no fit provide, and also for delayed referral. Di herbal preparations wey dem dey give during pregnancy na di part wey dem never research well, and di findings say some fit cause abortion show why dis na real concern.
Mental health. Yoruba traditional treatment for mental illness, wèrè and other categories like am, na one of di areas wey psychiatry take di tradition seriously pass, mostly through di work wey connect to Aro Hospital at Abẹ́òkúta and di village system wey dem develop there from di 1950s, wey deliberately carry community-based care join body, di kind care wey traditional practice already dey use. Di things wey traditional practice dey do include herbal sedation, physical restraint, make patient stay for di healer compound with di healer family, work, and ritual treatment for wetin cause di problem. Di strong points be say dem no dey isolate di patient from society and dem dey carry family join body for di treatment. Di harm wey dem don document na physical restraint including chaining, wey people still dey report for some traditional and religious healing centres for Nigeria, and dis na serious human rights issue, no be just cultural practice wey person go describe without concern.
Dem dey actively document Yoruba ethnobotany, and di surveys na di strongest part of di literature: dem dey record wetin practitioners dey use, wetin dem dey use am for, and how dem dey prepare am, with proper voucher specimens and species identification for di better works. Dat documentation dey urgent because di way dem dey pass di knowledge down dey reduce as practitioners dey old, forest habitat dey lost, and apprentices dey go school instead.
Di pharmacological evaluation no balance. E focus mostly on malaria, na in vitro and rodent work dominate am, e rarely reach clinical trial, and e dey suffer from non-standardised extracts wey dey make results hard to compare across different studies. Dem never research toxicology well compared to activity, and dis na di wrong approach for substances wey people already dey consume.
Wetin dey largely miss na di middle layer: standardised preparations, to measure how dosage dey work, drug interaction studies with di pharmaceuticals wey patients dey take join am, and clinical evaluation of di actual traditional medicine as dem dey prepare am instead of solvent extracts of single plant dem. Until dat one dey, di honest position on most Yoruba herbal medicine na say deep and sophisticated knowledge system don identify plants wey get real pharmacological activity, but di question of weda di medicine dey work for human body as dem actually prepare and give am na question wey still dey open, no be wetin dem don answer.
Di earliest documented record of Yoruba medicine show inside oral corpora, where healing knowledge and botanical formula dem take Ifá verse preserve and pass down across generations of oníṣègùn . Under Ọ̀yọ́ Empire during di seventeenth and eighteenth centuries, herbalist and diviner dem get formal place inside palace structure and military war, dey supply battlefield treatment, protective preparations, and epidemic control across imperial territories [S10, S11].
Di nineteenth-century Yoruba civil wars disrupt established medicinal guilds and bring strong innovation for traumatic wound treatment, bullet extraction, and field bone-setting [S10, S11]. During mid-nineteenth century, Christian missionary contact bring European medical dispensaries come, wey start long rivalry where mission bodies condemn indigenous herbalism and divination say na idolatry, while dem dey often quietly depend on local herbalists to survive for malaria-endemic regions .
Colonial rule make dis suppression official for 1900 and through subsequent public health ordinances wey outlaw indigenous healing guilds, especially targeting di Ṣọ̀pọ̀ná cult under anti-smallpox law, while dem push traditional practitioners comot from state recognition . Despite administrative prohibition, Yoruba medicine continue to stand alongside colonial dispensaries, dey sustain community healthcare across rural and urban centers [S10, S11].
Following Nigerian independence for 1960, medical scholars and university faculties start systematic scientific investigation into indigenous pharmacology and ethnobotany . Psychiatric work during di 1950s and 1960s for Aro Hospital inside Abẹ́òkúta show di clinical validity of traditional community-based healing methods . For postcolonial era, professional associations of traditional medicine practitioners form to seek legal integration into primary healthcare .
Today, Yoruba healing dey operate in active coexistence with Western biomedicine, Islamic medicine, and Pentecostal healing ministries, while e still maintain presence inside market pharmacopoeias and rural midwifery [S10, S11]. Inside Atlantic diaspora, especially for Brazil, Cuba, and Trinidad, enslaved Yoruba communities preserve core botanical classification and ritual pharmacopoeias inside Candomblé, Lucumí, and Orisha traditions, using local plants replace di original ones while dem retain di structural logic and incantatory framework of di original system .
How knowledge was taught and preserved before schools existed, the memorization systems, the specialist knowledge classes, initiation as pedagogy, and what mission and colonial schooling replaced.
The agricultural base, yam and its ritual centrality, the staple dishes and their regional variation, palm oil, food taboos and their lineage and orisa basis, and the social meaning of feeding people.
Lagos and Ibadan, the emigration wave, where traditional institutions actually stand in the Nigerian state, religion in the family, and an honest account of what has persisted and what has gone.
The orisa of leaves and of the knowledge of what plants do, the one-limbed body, the iron staff of birds, and the relationship between Osanyin and the practising herbalist.
The scale of the documented Yoruba pharmacopoeia, how plants are classified and named, the tonal wordplay that makes a plant's name a mnemonic for its use, and a worked table of named plants against what pharmacological research has and has not established.
The Yoruba deity of botanical pharmacopoeia, herbal medicine, and forest mysteries, who operates in essential partnership with Ifa divination.