In medieval physiology, it was considered that black bile is the humor secreted by kidneys or spleen and it cause melancholy (feeling of sadness which lasts for a long time). Actually black bile was hypothetical fluid. Who disproved “Good homor” hypothesis ?

Options

A. Hippocrates and Galen
B. Indian Ayurveda system of medicine
C. Willian Harvey
D. Early Greeks

Answer

To answer the question about who disproved the "Good Humor" hypothesis, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the "Good Humor" Hypothesis**: The "Good Humor" hypothesis was a belief in medieval physiology that human health and temperament were influenced by four bodily fluids or "humors": blood, phlegm, yellow bile, and black bile. Each humor was thought to be linked to specific emotions and physical conditions.

2. **Identifying the Role of Black Bile**: Black bile was specifically associated with melancholy, a state of prolonged sadness. It was believed to be secreted by the kidneys or spleen, but this was based on hypothetical reasoning without physical evidence.

3. **Historical Context**: The concept of humors was popularized by early Greek physicians, particularly Hippocrates, who is often referred to as the "Father of Medicine." He and others believed in the influence of these humors on health and personality.

4. **Disproving the Hypothesis**: The "Good Humor" hypothesis was ultimately challenged and disproven with the advancement of medical science, particularly with the discovery of the circulatory system. This was significantly advanced by William Harvey, who demonstrated how blood circulates through the body, providing physical evidence that contradicted the earlier humor theory.

5. **Conclusion**: Therefore, the individual who is credited with disproving the "Good Humor" hypothesis is William Harvey.

### Final Answer:
William Harvey

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