The Church and religious beliefs had a great influence over medicine during this period, leading to a continuation of ideas about cause, preventions and treatments
The majority of people in medieval England could not read or write and would learn from what they heard in church about the causes of illness and disease
This theory suggested that the body was made up of four liquids (humours) - blood, phlegm, black and yellow bile- and an imbalance of these substances caused illness and disease
A physician in Ancient Rome who extended the Theory of the Four Humours by suggesting that the humours should be rebalanced by using the Theory of Opposites
Galen also believed in the idea of the soul, which fitted with the teachings of the Church. This led to the Church promoting the ideas of Galen, and doctors widely using the Theory of the Four Humours, throughout the period c.1250-c.1500
A leading physician from Ancient Greece. Hippocrates created the Theory of the Four Humours after carefully observing and recording the symptoms of his patients