The diabetes mellitus is caused by :

Options

A. Hyper secretion of Insulin
B. Hyposecretion of Insulin
C. Hyposecretion of ADH
D. Hyper secrection of ADH

Answer

**Step-by-Step Solution:**

1. **Understanding Diabetes Mellitus**: Diabetes mellitus is a condition characterized by high levels of glucose in the blood, known as hyperglycemia. It is important to identify the underlying cause of this condition.

2. **Identifying the Hormones Involved**: The key hormone involved in regulating blood glucose levels is insulin. Insulin is produced by the pancreas and helps lower blood glucose levels by facilitating the uptake of glucose into cells.

3. **Analyzing the Options**:
- **Hypersecretion of Insulin**: This would lead to lower blood glucose levels, not diabetes mellitus.
- **Hyposecretion of Insulin**: This means that there is insufficient insulin being produced, which would result in elevated blood glucose levels, leading to diabetes mellitus.
- **Hyposecretion of ADH**: Antidiuretic hormone (ADH) is involved in water reabsorption in the kidneys and does not directly affect blood glucose levels.
- **Hypersecretion of ADH**: Similar to hyposecretion, hypersecretion of ADH does not relate to glucose metabolism.

4. **Conclusion**: The correct cause of diabetes mellitus is hyposecretion of insulin, which leads to prolonged hyperglycemia and the associated symptoms of diabetes.

5. **Final Answer**: The diabetes mellitus is caused by hyposecretion of insulin.

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