The disease mellitus is the result of

Options

A. Undersecretion of insulin
B. Undersecretion of thyroxine
C. Undersecretion of oestrogen
D. None of the above

Answer

**Step-by-Step Solution:**

1. **Understanding Diabetes Mellitus**: Diabetes mellitus is primarily a metabolic disorder characterized by improper glucose metabolism in the body. This leads to fluctuating glucose levels in the blood.

2. **Types of Diabetes Mellitus**: There are two main types of diabetes mellitus:
- **Type 1 Diabetes**: This occurs when the beta cells in the pancreas, which produce insulin, are damaged. As a result, there is insufficient insulin production.
- **Type 2 Diabetes**: This occurs when the body’s cells become resistant to insulin, meaning that even though insulin is produced, the cells do not respond to it effectively.

3. **Identifying the Cause**: The question asks for the cause of diabetes mellitus. Since insulin is the hormone responsible for regulating glucose metabolism, any under secretion of insulin will lead to diabetes mellitus.

4. **Evaluating the Options**:
- **Option A**: Under secretion of insulin hormone - This is correct as it directly relates to Type 1 diabetes.
- **Option B**: Under secretion of thyroxine hormone - This is related to thyroid function and does not cause diabetes mellitus.
- **Option C**: Under secretion of estrogen - This is related to reproductive health and does not cause diabetes mellitus.
- **Option D**: None of the above - This is incorrect as option A is valid.

5. **Conclusion**: The disease mellitus (diabetes mellitus) is primarily the result of under secretion of the insulin hormone.

**Final Answer**: The disease mellitus is the result of under secretion of insulin hormone (Option A).

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