Kos island is known as the hometown of Hippocrates, who was the founder of the Medical school of Kos and his name is strongly connected with the first creative period of scientific medicine. His diagnostic system was based on logical reasoning, on careful clinical observation and to approach an illness not isolated, instead to study the patient as a whole. He maintained that all diseases have natural causes. Illnesses were diagnosed and simple treatments were prescribed like diet, hygiene, sleep and exercises. He believed that diseases were caused naturally and had their cause in a wrong way of life. Today we would call his approach lifestyle medicine. Hippocrates established the ethical and moral rules of medical practice. He is still a contemporary since modern medicine can draw useful lessons from his writings. Hippocrates is widely considered to be the "Father of Medicine” and is often quoted with "Let food be your medicine, and medicine be your food" and "Walking is man's best medicine''.The island was originally colonised by the Carians. A contingent from Kos participated in the War of Troy The Dorians invaded it in the 11th century BC, establishing a Dorian colony with a large contingent of settlers from Epidaurus, whose Asclepius cult made their new home famous for its sanatoria. At the end of the 6th century, Kos fell under AchaemenThe other chief sources of the island's wealth lay in its wines and, in later days, in its silk manufacture. Its early history–as part of the religious-political amphictyony that included Lindos, Kamiros, Ialysos, Cnidus and Halicarnassus, the Dorian Hexapolis (Greek for six cities), is obscure. At the end of the 6th century, Kos fell under Achaemenid domination but rebelled after the Greek victory at Cape Mykale in 479. During the Greco-Persian Wars, when it twice expelled the Persians, it was ruled by tyrants, but as a rule it seems to have been under oligarchic government. In the 5th century, it joined the Delian League, and, after the revolt of Rhodes, it served as the chief Athenian station in the south-eastern Aegean (411–407). In 366 BC, a democracy was instituted.
*P.S: this information is taken from kosinfo.gr which is an official webpage of Kos Island
For more information:You can always visit the following link about Kos Island's historical background: http://www.kosinfo.gr/history/history-references
P.S: The photograph was taken from Wikipedia Commons, By Wmpearl (Yükleyenin kendi çalışması) [Public domain], via Wikimedia Commons