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4000 BCE
Primitive Times
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4000 BCE
Primitive Times
people just to believed that illness and diseases were caused by a supernatural spirits and demons. -
3000 BCE
Ancient Egyptians
They had advanced knowledge of anatomy and surgery. Additionally, they treated many diseases, including dental, gynecological, gastrointestinal, and urinary disorders. -
1700 BCE
Ancient Chinese
China has one of the world's oldest medical systems. Acupuncture and Chinese herbal remedies date back at least 2,200 years, although the earliest known written record of Chinese medicine is the Huangdi neijing from the 3rd century BCE. -
1489 BCE
16th Century
Physicians did not widely practice a treatment of medicines, although some chemical elixirs and ointments were applied or administered. They were often produced with dangerous materials like lead or mercury. -
1200 BCE
Ancient Greeks
The humeral theory states that good health comes from a perfect balance of the four humors: blood, phlegm, yellow bile, and black bile. Consequently, poor health resulted from improper balance of the four humors -
800 BCE
Middle Ages
One of the most important contributions to medicine from medieval China was to the creation of amalgams for dental procedure -
800 BCE
Dark Ages
The quality of medical practitioners was poor, and people rarely saw a doctor, although they might visit a local wise woman, or witch, who would provide herbs or incantation. -
752 BCE
Ancient Romans
The Romans were extremely adept engineers. They understood the laws of physics well enough to develop aqueducts and better ways to aid water flow. -
1315
Renaissance
The Renaissance period witnessed groundbreaking developments in medical sciences, including advancements in human anatomy, physiology, surgery, dentistry, and microbiology. -
1347
Black death
Black Death is believed to have been the result of plague, an infectious fever caused by the bacterium Yersinia pestis. The disease was likely transmitted from rodents to humans by the bite of infected fleas -
The Great Plague of London
The plague was caused by the Yersinia pestis bacterium, which is usually transmitted to a human by the bite of a flea or louse. the epidemic was on a much smaller scale than the earlier Black Death pandemi -
18th century
advances in technology, including the invention of the stethoscope, and the first researched and documented text on the ancient techniques of midwifery -
19th Century
Diseases and epidemics of the 19th century included long-standing epidemic threats such as smallpox, typhus, yellow fever, and scarlet fever. -
Malaria
a serious and sometimes fatal disease caused by a parasite that commonly infects a certain type of mosquito which feeds on humans. -
20th century
The health care system became more organized, technologically sophisticated, and costly -
James Watson
American geneticist and biophysicist who played a crucial role in the discovery of the molecular structure of deoxyribonucleic acid -
Francis Crick
was an English molecular biologist, biophysicist, and neuroscientist. He, James Watson, Rosalind Franklin, and Maurice Wilkins played crucial roles in deciphering the helical structure of the DNA molecule -
Spanish Flu
a new influenza A virus that spread easily and infected people throughout the world -
Asian Flu
flu pandemic caused an estimated one million to two million deaths worldwide and is generally considered to have been the least severe of the three influenza pandemics of the 20th century. -
21st century
chronic diseases such as heart disease and obesity are the leading cause of death and disability in the U.S., and the primary drivers of the nation's annual health care costs.