The Theory of the Four Humours can't be used to explain certain diseases anymore
people are more curious about the world, so there are lots of new ideas about the causes of disease and illness
Now, many scientists and great thinkers want to better understand the world around them
people would still rely on remedies and cures from earlier times
they still believed that miasma causes disease
The practice of medicine is the same, even though ideas about medicine are changing
People who fell ill during the period 1500 to 1700 were likely to believe the same things about the cause of their illness as their medieval ancestors
Very little changed in the practice of medicine during this period
Secular
Not religious or in any way connected with spiritual beliefs
Epidemics of the plague and other killer diseases, such as smallpox, the Great Pox (syphilis) and sweating sickness, could not be easily explained by the Theory of the FourHumours
They affected everybody in the same way and were not cured by traditional humoural treatments, like blood-letting and purging
There was still a widespread belief in miasmata as a cause of humoural imbalance and disease
A miasma could be the product of rottenvegetables,decayingbodies of humans or animals,excrement or any swampysmelly,dirty place
Alchemy
An early form of chemistry. Alchemists tried to turn one material into another: mostly, they were trying to discover a way of making gold.
In the 16th century, the Theory of the Four Humours was rejected by some radical physicians
Disease was seen as something separate from the body, which needed to be attacked
New chemical treatments started to appear, influenced by the increasing popularity of alchemy
In 1546, a new text called OnContagion theorised that disease was caused by seeds spread in the air
In 1628, a new theory was published in Britain, which suggested that bloodcirculated around the body instead of being made in the liver, as taught by Galen
A better understanding of the digestive system developed
This meant that people gradually stopped believing disease was caused by eating the wrongthings
Urine was no longer seen as an accurate way of diagnosing illness
New microscopes were being developed, which allowed for much clearer magnification
A new book, Micrographia, published in 1665, showed many detailed images, including a close-up drawing of a flea, copied from a magnified image
In 1676, the medical textbook Observationes Medicae was published. This to theorised that illness was caused by external factors rather than the four humours.
By c1700 the Theory of the Four Humours had been discredited, however, it was still being followed by the general population of Britain
Other ideas about causes of disease had been discovered (for example, 'animalcules')
Even though some of these ideas were very close to what we now know as the truth, they had very little impact at the time
A better understanding of human anatomy (the makeup of the body) was developing all the time
However, there was no point studying correct drawings of the internal organs when it was impossible to diagnose or treat internal problems on a living patient
Also, the lack of quality medical instruments, such as microscopes, prevented any rapid change in people's beliefs about the causes of disease
The new theories might have been very convincing, but without scientific proof they were just that-theories
Because the general public believed in the Theory of the Four Humours, most physicians stuck to the old methods
They were in the business of healing the sick, not coming up with better methods of doing it
Even those who did look for new ideas still needed to work, and patients did not want to pay physicians to experiment on them
While the practice of medicine did not change much at this time, ideas were starting to change
Scientists like Galileo and Copernicus were challenging the authority of the Church in other areas of scientific understanding
This encouraged medical scientists to start looking beyond the works of Galen and Hippocrates
By the end of the 17th century doctors and scientists had lots of new ideas about the causes of illness and disease-it just wasn't applied to everyday medical practice
Ideas about the causes of disease and illness
Stayed the same: Miasmata
Changed a lot: The Theory of the Four Humours, The human body, Diagnosis using urine
Changed a little: The use of medical books, The influence of the Church, Supernatural