Ancient Egyptians had some advanced medical knowledge for their time. They performed surgery, set broken bones and even knew about medicines. Some medicines the Ancient Egyptians used are honey and breast milk or gazelle's milk. Not only did they have medicinal values, they also are believed to have been used to ward off evil spirits and demons. The easiest way to see how good they were at medicine is to look at the medical papyri which have survived to the present day. The Edwin Smith papyrus is the world's oldest surviving surgical document, from about 1600 B.C. The text describes anatomy, and the examination, diagnosis, treatment, and prognosis of 48 types of medical problems in detail.