In the American Civil War (1861–65), as was typical of the 19th century, more soldiers died of disease than in battle, and even larger numbers were temporarily incapacitated by wounds, disease and accidents.[131] Conditions were poor in the Confederacy, where doctors and medical supplies were in short supply.[132] The war had a dramatic long-term impact on medicine in the U.S., from surgical technique to hospitals to nursing and to research facilities. Weapon development -particularly the appearance of Springfield Model 1861, mass-produced and much more accurate than muskets led to generals underestimating the risks of long range rifle fire; risks exemplified in the death of John Sedgwick and the disastrous Pickett's Charge. The rifles could shatter bone forcing amputation and longer ranges meant casualties were sometimes not quickly found. Evacuation of the wounded from Second Battle of Bull Run took a week.[133] As in earlier wars, untreated casualties sometimes survived unexpectedly due to maggots debriding the wound -an observation which led to the surgical use of maggots -still a useful method in the absence of effective antibiotics.
Since its founding in 1967, the Medical School’s Program in the History of Medicine has been dedicated to research and teaching in the intellectual, political, cultural, and social history of disease, health care, and medical science. The history of medicine provides students with a historical perspective on the role health, medicine, and disease play in society today. It prepares students to think critically about historical and contemporary health issues.
Paracelsus (1493–1541), was an erratic and abusive innovator who rejected Galen and bookish knowledge, calling for experimental research, with heavy doses of mysticism, alchemy and magic mixed in. He rejected sacred magic (miracles) under Church auspisces and looked for cures in nature.[81] He preached but he also pioneered the use of chemicals and minerals in medicine. His hermetical views were that sickness and health in the body relied on the harmony of man (microcosm) and Nature (macrocosm). He took an approach different from those before him, using this analogy not in the manner of soul-purification but in the manner that humans must have certain balances of minerals in their bodies, and that certain illnesses of the body had chemical remedies that could cure them.[82] Most of his influence came after his death. Paracelsus is a highly controversial figure in the history of medicine, with most experts hailing him as a Father of Modern Medicine for shaking off religious orthodoxy and inspiring many researchers; others say he was a mystic more than a scientist and downplay his importance.[83][84]

The underlying principle of most medieval medicine was Galen's theory of humours. This was derived from the ancient medical works, and dominated all western medicine until the 19th century. The theory stated that within every individual there were four humours, or principal fluids—black bile, yellow bile, phlegm, and blood, these were produced by various organs in the body, and they had to be in balance for a person to remain healthy. Too much phlegm in the body, for example, caused lung problems; and the body tried to cough up the phlegm to restore a balance. The balance of humours in humans could be achieved by diet, medicines, and by blood-letting, using leeches. The four humours were also associated with the four seasons, black bile-autumn, yellow bile-summer, phlegm-winter and blood-spring.[75]
Later in Roman times Galen (130-200 AD) became a famous doctor. At first he worked treating wounded gladiators. Then in 169 AD he was made doctor to Commodus, the Roman Emperor's son. Galen was also a writer and he wrote many books. Galen believed the theory of the four humors. He also believed in treating illness with opposites. So if a patient had a cold Galen gave him something hot like pepper. Galen was also interested in anatomy. Unfortunately by his time dissecting human bodies was forbidden. So Galen had to dissect animal bodies including apes. However animal bodies are not the same as human bodies and so some of Galen's ideas were quite wrong. Unfortunately Galen was a very influential writer. For centuries his writings dominated medicine.

Caroline Rance blogs at about the history of medical advertising and health fraud. Her book The History of Medicine in 100 Facts (Amberley Publishing, 2015) explores medicine’s history in bite-sized topics, from prehistoric parasites to the threat of antibiotic resistance. You can follow Caroline on Twitter @quackwriter and on Facebook at

In 1847 in Vienna, Ignaz Semmelweis (1818–1865), dramatically reduced the death rate of new mothers (due to childbed fever) by requiring physicians to clean their hands before attending childbirth, yet his principles were marginalized and attacked by professional peers.[115] At that time most people still believed that infections were caused by foul odors called miasmas.

c.130 CE Birth of Galen, considered by many to be the most important contributor to medicine following Hippocrates. Born of Greek parents, Galen resides primarily in Rome where he is physician to the gladiators and personal physician to several emperors. He publishes some 500 treatises and is still respected for his contributions to anatomy, physiology, and pharmacology.
The ancient Mesopotamians had no distinction between "rational science" and magic.[8][9][10] When a person became ill, doctors would prescribe both magical formulas to be recited as well as medicinal treatments.[8][9][10][7] The earliest medical prescriptions appear in Sumerian during the Third Dynasty of Ur (c. 2112 BC – c. 2004 BC).[11] The oldest Babylonian texts on medicine date back to the Old Babylonian period in the first half of the 2nd millennium BCE.[12] The most extensive Babylonian medical text, however, is the Diagnostic Handbook written by the ummânū, or chief scholar, Esagil-kin-apli of Borsippa,[13][14] during the reign of the Babylonian king Adad-apla-iddina (1069–1046 BCE).[15] Along with the Egyptians, the Babylonians introduced the practice of diagnosis, prognosis, physical examination, and remedies. In addition, the Diagnostic Handbook introduced the methods of therapy and cause. The text contains a list of medical symptoms and often detailed empirical observations along with logical rules used in combining observed symptoms on the body of a patient with its diagnosis and prognosis.[16] The Diagnostic Handbook was based on a logical set of axioms and assumptions, including the modern view that through the examination and inspection of the symptoms of a patient, it is possible to determine the patient's disease, its cause and future development, and the chances of the patient's recovery. The symptoms and diseases of a patient were treated through therapeutic means such as bandages, herbs and creams.[13]
The first medical schools were opened in the 9th century, most notably the Schola Medica Salernitana at Salerno in southern Italy. The cosmopolitan influences from Greek, Latin, Arabic, and Hebrew sources gave it an international reputation as the Hippocratic City. Students from wealthy families came for three years of preliminary studies and five of medical studies. The medicine, following the laws of Federico II, that he founded in 1224 the University ad improved the Schola Salernitana, in the period between 1200 and 1400, it had in Sicily (so-called Sicilian Middle Ages) a particular development so much to create a true school of Jewish medicine.[73]

Late 1800s: The expectation in the United States that hospitals for the mentally ill and humane treatment will cure the sick does not prove true. State mental hospitals become over-crowded, and custodial care supersedes humane treatment. New York World reporter Nellie Bly poses as a mentally ill person to become an inmate at an asylum. Her reports from inside result in more funding to improve conditions.