The Unani system of medicine originated in Greece and was developed by Hippocrates and later Arabian scholars, focusing on balancing body humors. It identifies four elements (earth, air, water, fire) and four humors (blood, phlegm, yellow bile, black bile) as essential to health, differing from other traditional systems like Ayurveda and Chinese medicine. Currently, Unani medicine is integrated into India's national healthcare system, with recognized practitioners and research institutions dedicated to its development.