Assertion: Cortisol produces anti-inflammatory reactions and suppresses the immune response.
Reason: Cortisol stimulates gluconeogenesis, lipogenesis and proteogenesis.

Explanation

To analyze the assertion and reason provided in the question, we can break down the information step by step:

### Step 1: Understand the Assertion
- **Assertion**: "Cortisol produces anti-inflammatory reactions and suppresses the immune response."
- **Explanation**: Cortisol is a glucocorticoid hormone produced by the adrenal cortex. It is known for its role in reducing inflammation and suppressing the immune system, particularly during stress responses.

### Step 2: Understand the Reason
- **Reason**: "Cortisol stimulates gluconeogenesis, lipogenesis, and proteogenesis."
- **Explanation**: While cortisol does stimulate gluconeogenesis (the formation of glucose from non-carbohydrate sources), it does not stimulate lipogenesis (the synthesis of fat) and proteogenesis (the synthesis of proteins) in the same way. Instead, cortisol primarily promotes gluconeogenesis and lipolysis (the breakdown of fats) and proteolysis (the breakdown of proteins).

### Step 3: Evaluate the Truth of the Assertion and Reason
- **Assertion Evaluation**: The assertion is correct. Cortisol does produce anti-inflammatory reactions and suppresses the immune response.
- **Reason Evaluation**: The reason is incorrect. While cortisol does stimulate gluconeogenesis, it does not promote lipogenesis and proteogenesis as stated.

### Step 4: Conclusion
- Based on the evaluations:
- The assertion is true.
- The reason is false.
- Therefore, the correct answer is that the assertion is true, but the reason is false.

### Final Answer
The answer is **Option C**: Assertion is true, but reason is false.

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