Which of the following is not the function of androgen in males ?

Options

A. Stimulate muscular growth , growth of facial and axillary hair
B. Influence libido
C. Produce catabolic effect on protein and carbohydrate metabolism
D. Stimulate aggressiveness and low pitch of voice

Answer

To determine which of the following is not a function of androgens in males, we will analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Androgens**: Androgens, primarily testosterone, are male sex hormones produced mainly by the Leydig cells in the testes. They play a crucial role in the development of male secondary sexual characteristics.

2. **Analyzing Each Option**:
- **Stimulate Muscular Growth**: Androgens are known to promote muscle growth by enhancing protein synthesis. This is a recognized function of androgens.
- **Growth of Facial and Axillary Hair**: Androgens stimulate the growth of body hair, including facial and axillary hair. This is also a known function of androgens.
- **Influence Libido**: Androgens play a significant role in influencing sexual desire or libido in males. This is another established function of androgens.
- **Produce Catabolic Effect on Protein and Carbohydrate Metabolism**: This option suggests that androgens have a catabolic effect, which means breaking down proteins and carbohydrates. However, androgens are generally known for their anabolic effects, promoting growth and synthesis rather than breakdown.
- **Stimulate Aggressiveness and Low Pitch of Voice**: Androgens are associated with increased aggressiveness and contribute to the deepening of the voice during puberty. This is a recognized effect of androgens.

3. **Identifying the Incorrect Function**: Based on the analysis, the only option that does not align with the known functions of androgens is "produce catabolic effect on protein and carbohydrate metabolism." Instead, androgens are known for their anabolic properties.

### Conclusion:
The correct answer is **"produce catabolic effect on protein and carbohydrate metabolism"** as it is not a function of androgens in males.

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