History of early western medicine shared principles of ancient Greek humors these include blood, phlegm, black bile, and yellow bile. Off balance of any one of the humors was once thought to be the cause of sickness and disease, ancient Greeks believed that if you have too little or too much of the fluids would cause bad health. They utilized the healing powers of hot, cold, dry, and wet preparations. The function of many herbs and slaves were also highly regarded, it was very rare when a person had the need to utilize a "bone-setter" or surgeon, most of whom had no conventional training. Physicians with adequate preparation and scientific training started in America in the late colonial period. The University of Pennsylvania was the first
