Unani System of Medicine has its origin in Greece. It was established by the great Physician and philosopher Hippocrates (460-377 BC). This system is based on Hippocratic Theory of four humours viz. Dam (blood), Balgham (phlegm), Safra (yellow bile), Sauda (black bile) and four qualities of living human body i.e. hot, cold, moist and dry. Another great physician Galen contributed for its further development. Aristotle laid down foundation of Anatomy and Physiology. The Arab scholars and physicians have played great role in the development of this system. There are many well known names like Jabir bin Hayyan, Ibn Rabban Tabari, Abu Bakar Zakariya Razi, Ibn Sina, and Abul Qasim Zohravi who flourished this system. The Arab physicians put the Greek ideas as seven principles known as Umoor-e-Tabiya. They are Arkan (element), Mizaj (temperament), Akhlat (humors), Aaza (organs), Arwah (sprits), Quwa (powers) and Afaal (functions).
In Unani System of Medicine the seven principles are supposed to be responsible for the body constitution and its health, as well as, diseased conditions.In India this system was nurtured and flourished by some eminent personalities like Hakim Mohd Shareef Khan, Hakim Ajmal Khan, Hakim Akbar Arzani, Hakim Kabiruddin etc.
Now Unani System of Medicine received boost in the form of government support through Central Council of Indian Medicine, Department/Ministry of AYUSH.Unani Medicine is the most well known traditional medicine systems and the WHO has recognized it as an alternative system to cater the health care needs of human beings. Unani System of Medicine involves the use of herbal medicines, minerals and animal parts. In many countries along with the modern medicine, Unani medicines and herbal products are being used more.