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What are the four major bodily fluids?

Published in Human Biology 2 mins read

The four major bodily fluids, according to historical understanding, are black bile, yellow bile, phlegm, and blood. These were known as the four humors.

The Four Humors

Ancient medical thought viewed the human body as a system governed by four fluids, or "humors." These humors were believed to determine a person's health and temperament. A balance of these humors meant good health, while an imbalance led to disease. This theory, influential in both ancient Greek and medieval European medicine, is a significant part of medical history.

Detailed Breakdown

Humor Description
Black Bile Associated with melancholy and sadness.
Yellow Bile Linked to anger and a fiery temper.
Phlegm Connected to calmness, sluggishness, and apathetic nature.
Blood Believed to correspond to a cheerful and courageous disposition.

Historical Significance

  • This humoral theory dominated Western medicine for over 1500 years.
  • Practices like bloodletting were based on the idea of restoring humoral balance.
  • Understanding this historical context helps appreciate the evolution of medical thought.
  • The concept is a testament to ancient attempts to understand the human body.

While modern medicine has debunked the humoral theory, understanding it offers a glimpse into the history of health beliefs. The idea that four fluids controlled health was foundational to many medical practices for centuries.

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