What are the 'four humors'? Hippocrates is often credited with developing the theory of the "four humors," or fluids. The philosophers Aristotle and Galen also contributed to the concept.

In her quest for self-diagnosis, Sibel becomes obsessed with the four humors enumerated by Hippocrates, the ancient Greek physician born on an island off present-day Turkey. Hippocrates believed ...

Leading medical minds were once convinced that health and sickness resulted from the interplay of the four "humors": blood ... with the ancient physicians Hippocrates and Galen, the Persian ...