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There were supposedly four humors (black bile, yellow bile, blood and phlegm). When someone was sick, the four humors must have been out of balance and to heal, the four humors had to be balanced again.
Hippocrates believed that the human body was controlled by four humors, phlegm, black bile, yellow bile and blood. Illnesses were caused by an imbalance of the humors.
The ancient Greek physician Hippocrates first popularize the theory that humors in the body contributed to the temperament of people. Melancholia was it was believed to be caused by an excess of black bile.
It has no scientific basis.
Basic to the theory is the concept of the "four humors." These are Dum (blood), Bulghum (phlegm), Sufra (yellow bile), and Sauda (black bile).
Most people believed that diseases were caused by miasma (bad air), the alignment of the stars, the four humors & a punishment from god.
earth, water, fire and air
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Alfred Wegener originated the theory of pangaea.
Egyptian
yes
Galen learned from doctors such as Hippocrates about the four humors.