Timeline of medicine and medical technology

People have worked to stay well for a long time.

Long ago, they used plants to feel better. One man used a special fungus to fight germs.

Doctors also learned how the body works. They studied the brain and the heart. Some doctors even used tools to fix teeth. Later, people built special places to help the sick. These places are called hospitals. We still learn from them today.

People have worked to heal others for thousands of years.

In ancient times, people used plants as medicine. One man used a birch fungus to fight worms. Around 3,000 BCE, Ayurveda began in India. This is an old way of healing. In Egypt, doctors were specialists. Some only treated eyes or teeth.

Later, doctors studied the human body. Alcmaeon of Croton studied the brain. He thought the brain was the seat of intelligence. Herophilus studied the nervous system. He found the difference between sensory nerves and motor nerves. These nerves help us feel and move. In the 1200s, Ibn al-Nafis studied the heart. He found how blood moves through the lungs. This is called pulmonary circulation. People also built places to care for the sick. These places are called hospitals. Some were built for the poor or the old. In 1084, England had its first documented hospital. Doctors still use these old ideas to help us today.

People have worked to heal others for thousands of years.

Long ago, medicine was often tied to nature and magic. In the Paleolithic era, people in Northern Italy worked on dental caries, which are cavities in teeth. By 7300 BC, people in Ukraine were performing trepanation, a way of working on the skull. Around 3350 BC, a man named Ötzi carried a birch fungus that could fight whipworms. This fungus likely worked as an anthelmintic, which is a medicine used to clear out worms. In ancient Egypt, doctors were often specialists. One man named Iry was an eye-doctor for the palace. Other doctors focused only on the belly or the intestines.

Medicine works by understanding how the body moves and reacts. For a long time, many believed disease came from gods or magic. In the 9th century, Hesiod wrote that disease had a life of its own. However, thinkers like Hippocrates changed this view around 420 BC. He argued that diseases have natural causes. This was the start of rational medicine. Later, doctors began to study the body through dissection. Alcmaeon of Croton studied the brain and optic nerves. He believed the brain was the center of intelligence. Herophilus also studied the nervous system. He found the difference between sensory nerves and motor nerves.

History shows us how many different cultures shared ideas. Around 3000 BC, the practice of Ayurveda began in India. In China, the Huangdi Neijing was published to guide traditional medicine. Many important books were written in different languages. For example, the Ebers Papyrus is an old Egyptian medical text. In the 2nd century AD, Galen created a system of medicine. His ideas stayed important for many hundreds of years. During the Middle Ages, many scholars translated these works. They moved ideas from Greek and Arabic into Latin. This helped doctors in Europe learn new things.

There are many specific facts about how tools and treatments changed. Around 500 BC, people began using pills. These were made so patients could take a measured amount of medicine. In 1249, Roger Bacon wrote about spectacles to help people see better. By 1030, Avicenna wrote The Canon of Medicine. This book was used in universities for a very long time. In the year 1242, Ibn al-Nafis made a huge discovery. He found how blood moves through the lungs. This is called pulmonary circulation. He also found how blood moves through the heart.

We can see how medicine links to the buildings we use today. Early on, people built special places to care for the sick. In 362 AD, Julian ordered buildings called xenones to be built. These were like early versions of hospitals. Later, Basil of Caesarea founded a place with workshops and schools. Different buildings were made for different needs. Some were for orphans, and some were for the poor. In 1084, England had its first documented hospital in Canterbury. In 1123, St. Bartholomew's Hospital was also founded. These old ideas helped create the modern hospitals we know.

The history of medicine is a long journey of discovery. It is the study of how humans heal the body and treat disease. For thousands of years, people have sought ways to fix what is broken. This includes everything from fixing teeth to understanding the brain. Medicine has evolved from ancient magic to a complex science. It involves doctors, researchers, and specialized tools. By studying the past, we can see how we learned to save lives.

Early medical practices often combined natural remedies with spiritual beliefs. In the Paleolithic era, humans in Northern Italy practiced dental caries manipulation. This means they worked on cavities in teeth. Around 7300 BC, evidence from Ukraine shows people performed trepanation. This is a procedure where a hole is made in the skull. Some skulls show signs of healing, which means the patients survived. Around 3350 BC, a man named Ötzi carried a birch fungus. This fungus contains resins that act as an anthelmintic. An anthelmintic is a medicine used to clear out parasitic worms. Ötzi likely used it to fight a whipworm infection.

As civilizations grew, medicine became more organized and specialized. In ancient Egypt, doctors often focused on a single disorder. An inscription mentions Iry, who was an eye-doctor for the palace. Other physicians were guardians of the bowels or specialists of the belly. Around 500 BC, the practice of Ayurveda began in India. This system provided a framework for medical knowledge. In China, the Huangdi Neijing was published to guide traditional medicine. Around the same time, Bian Que became known for using acupuncture. Acupuncture involves using needles to treat the body. He also used pulse diagnosis to check a patient's health.

Scientific understanding grew through the study of anatomy. Anatomy is the study of the structure of the body. Alcmaeon of Croton studied the optic nerves and the brain. He argued that the brain was the seat of intelligence. He also distinguished between veins and arteries. In the 3rd century BC, Herophilus and Erasistratus practiced androtomy. Androtomy is the dissection of human bodies. Herophilus studied the nervous system and identified sensory and motor nerves. He also studied the anatomy of the eye. He used the term "retiform," which means net-like, to describe parts of the eye.

Rational medicine changed how doctors viewed the causes of sickness. For a long time, people believed disease was divine or magical. In the 9th century, Hesiod described disease as having a life of its own. However, Hippocrates of Cos argued that diseases have natural causes. He is often called the father of rational medicine. This shift led to more observation and less reliance on incantations. In the 2nd century AD, Galen developed a comprehensive medical philosophy. His system was based on observation and experience. Galen's ideas dominated medical thought throughout the Middle Ages and into the modern era.

Medical knowledge was often preserved and shared through books and translations. The Ebers Papyrus is an ancient Egyptian text about medicine. In the 2nd century AD, Dioscorides wrote De Materia Medica. This work was a precursor to modern pharmacopoeias, which are books of medicinal drugs. During the Middle Ages, many scholars translated Greek and Arabic works into Latin. This allowed European doctors to access ancient wisdom. In 1030, Avicenna wrote The Canon of Medicine. This book was so important it remained a standard textbook in universities until the 18th century.

Humanity also developed ways to care for the sick in dedicated buildings. In 362 AD, Julian ordered the construction of xenones. These were early versions of hospitals. Later, Basil of Caesarea founded the Basileias, which included buildings for patients and schools. Different institutions were created for specific groups. Some were for orphans, some for the poor, and some for the elderly. In 1084, the first documented hospital in England was founded in Canterbury. By 1123, St. Bartholomew's Hospital was established in London. These institutions laid the groundwork for the modern hospital systems we use today.

Technological and biological discoveries continued to push medicine forward. Around 500 BC, the invention of pills allowed for measured doses of medicine. In 1249, Roger Bacon wrote about convex lens spectacles. These helped people with long-sightedness see more clearly. In 1242, Ibn al-Nafis made a major discovery regarding the heart. He suggested that the left and right ventricles are separate. He also discovered pulmonary circulation, which is how blood moves through the lungs. He also identified coronary circulation. These discoveries helped us understand how the body's internal systems work together.