Hippocratic Medicine refers to the medical practices and theories developed by the ancient Greek physician Hippocrates and his followers around the 5th century BCE. This approach emphasized the importance of observation, diagnosis, and prognosis in treating patients. It also introduced the concept of the four humors—blood, phlegm, yellow bile, and black bile—believing that a balance among them was essential for good health. The Hippocratic Corpus, a collection of texts attributed to Hippocrates and his school, laid the foundation for medical ethics and practice. One of the most famous principles from this corpus is the Hippocratic Oath, which emphasizes the ethical responsibilities of physicians to their patients and society.