Unani Medicine

The word Unani (يونانی, pronounced yoo-NAH-nee) is the Arabic and Persian form of "Greek," acknowledging the tradition's Hellenic origins. Hippocrates of Kos (460–370 BCE) laid the foundation: disease has natural causes, not divine ones, and the body contains four fundamental fluids — blood, phlegm, yellow bile, and black bile — whose balance determines health. Galen of Pergamon (129–216 CE) elaborated this into a comprehensive theoretical framework, classifying drugs by temperament and degree, mapping constitutional types, and producing a body of medical writing so vast it dominated Western medicine for over a thousand years.

But Unani medicine is not Greek medicine. What distinguishes the tradition began in 8th-century Baghdad, when Caliph al-Ma'mun established the Bayt al-Hikma (House of Wisdom) and commissioned the systematic translation of Greek, Persian, and Indian medical texts into Arabic. Hunayn ibn Ishaq (809–873), a Nestorian Christian scholar, led this effort — translating over 100 of Galen's works alongside Hippocratic texts and Dioscorides' De Materia Medica. Hunayn did not copy passively. He compared manuscript traditions, corrected scribal errors, and added critical commentary. Without his work, much of the Greek medical corpus might have been lost entirely during Europe's early medieval period.

The physicians who inherited these translations did something no Greek physician had done: they tested the inherited theory against clinical observation, corrected it where it failed, and expanded it with knowledge from Persian, Indian, and Central Asian traditions. Abu Bakr al-Razi (Rhazes, 854–925), head of Baghdad's hospital, wrote Shukuk 'ala Jalinoos (Doubts about Galen) — documenting cases where his bedside experience contradicted Galenic authority. He produced the first clinical distinction between smallpox and measles. He introduced alcohol as an antiseptic and animal gut for sutures. Al-Razi's willingness to challenge the supreme authority of his own tradition — while still building on it — defined the intellectual character of Unani medicine.

Ibn Sina (Avicenna, 980–1037) completed the synthesis. Born in Bukhara, he was a polymath — physician, philosopher, astronomer, and poet — who produced the al-Qanun fi al-Tibb (Canon of Medicine), a five-volume encyclopedia that organized all known medical knowledge into a coherent system. The Canon classified 760 drugs by temperament and degree, described meningitis and distinguished it from pleurisy, proposed that disease could spread through contaminated water centuries before germ theory, and integrated Indian materia medica (Ibn Sina read Sushruta and Charaka in Arabic translation). It served as the standard medical textbook in both Islamic and European universities until the mid-17th century — roughly 600 years of continuous use, a record unmatched in medical history.

Al-Zahrawi (Albucasis, 936–1013) of Cordoba documented over 200 surgical instruments in his Kitab al-Tasrif, many of his own invention, establishing surgical standards that shaped European practice for 500 years. Ibn al-Nafis (1213–1288) of Damascus described pulmonary circulation — blood passing from the right ventricle through the lungs to the left ventricle — three centuries before William Harvey's famous demonstration in 1628. These were not marginal contributions. Islamic physicians built the first hospitals with separate wards, clinical teaching programs, pharmacies, and medical records. The Adudi Hospital in Baghdad (981 CE) and the Mansuri Hospital in Cairo (1284 CE) became models for the institutional practice of medicine worldwide.

When Latin translations of al-Razi, Ibn Sina, and al-Zahrawi entered Europe through the Toledo School of Translators in 12th- and 13th-century Spain, they catalyzed the European medical renaissance. Greek medicine returned to Europe — but transformed by four centuries of Islamic clinical observation, pharmacological expansion, and institutional innovation into something far more sophisticated than the Greeks had produced.

The system practiced today rests on four pillars: the akhlat (four humors), the concept of mizaj (temperament), the asbab-e-sitta zarooriya (six essential factors for health), and tabiyat — the innate healing power of the body that the physician's role is to support, not replace. Treatment follows a strict hierarchy from gentle to invasive: diet, lifestyle, medicine, and surgery only as a last resort. It is, at its core, a medicine of balance — and of respect for the body's own capacity to heal.

Every person has a unique mizaj — a specific balance of hot, cold, moist, and dry qualities determined partly by birth and partly by environment, diet, and habits. Knowing your mizaj is the foundation of Unani medicine, just as knowing your prakriti is the foundation of Ayurveda. Health means living in alignment with your temperament; disease means deviating from it. The same herb given to two different constitutions produces different effects — a principle shared across Unani, Ayurveda, and TCM.

Before any medicine is prescribed, the Unani physician examines these six domains. When all six are in proper balance, the body heals itself through tabiyat (the innate healing power). Most disease originates in disturbances to one or more of these factors — not in external invasion. This approach parallels Ayurveda's emphasis on dinacharya (daily routine) and ritucharya (seasonal routine) as primary medicine.

India is the global center of Unani practice. The Indian government recognizes Unani as a legitimate medical system under the AYUSH Ministry (Ayurveda, Yoga and Naturopathy, Unani, Siddha, and Homeopathy) alongside Ayurveda, Siddha, and other traditional systems. Over 40,000 registered practitioners hold BUMS (Bachelor of Unani Medicine and Surgery) degrees from more than 40 undergraduate colleges. The National Institute of Unani Medicine in Bangalore conducts ongoing clinical research. Aligarh Muslim University and Jamia Hamdard University maintain major Unani medical faculties. Hamdard Laboratories, the largest Unani pharmaceutical company, produces standardized formulations distributed across the subcontinent.

In Pakistan, the tradition is called tibb or hikmat, and practitioners are known as hakims (حکیم, "wise ones"). It is practiced widely and integrated into national healthcare. Bangladesh and Sri Lanka also have recognized Unani traditions. In Iran, a revival of tibb-e-sunati (traditional medicine) has brought renewed interest to the Persian roots of the system, with universities offering courses and research programs.

Modern pharmacological research has validated many Unani formulations. Habbatus sauda (black seed, Nigella sativa — the same kalonji endorsed in prophetic medicine) has extensive evidence supporting anti-inflammatory, antioxidant, and immunomodulatory properties. Khamira Gaozaban has demonstrated cardioprotective effects. Several Unani herbal compounds for diabetes management and inflammatory conditions are under active clinical investigation. The challenge is the same one facing Ayurveda and TCM: translating traditional compound formulations (which treat patterns of imbalance) into the framework of evidence-based medicine (which tests single interventions against single outcomes).

Unani's nature as a synthesis tradition makes its cross-tradition connections unusually deep. It did not develop in isolation and then discover parallels — it was built from the meeting of multiple knowledge systems, tested against clinical reality, and forged into something distinct. Understanding Unani's connections to other traditions in the Library is understanding the tradition itself.