Galen, a Greek physician, is born. He develops the theory of the four "humors": blood, phlegm, yellow bile and black bile. Good health is thought to result from a balance of the humors ...

Islamic medicine built on the legacies left behind by Greek and Roman physicians and scholars. Islamic physicians and scholars were strongly influenced by Galen and Hippocrates, who were viewed as ...

The physician Galen (about 129–216AD) tells us the water at Mytilene, on the Greek island of Lesbos, had qualities to treat various illnesses, including hydrops, a type of fluid build-up that ...