Diabetes mellitus is characterized by

Options

A. Loss of appetite
B. Loss of growth
C. increase of glucose
D. All of those

Answer

**Step-by-Step Solution:**

1. **Understanding Diabetes Mellitus**: Diabetes mellitus is a metabolic disorder characterized by high blood sugar levels over a prolonged period. It is primarily due to the body's inability to produce or effectively use insulin.

2. **Role of Insulin**: Insulin is a hormone produced by the beta cells of the islets of Langerhans in the pancreas. It plays a crucial role in regulating blood glucose levels by facilitating the uptake of glucose into the cells for energy.

3. **Insulin Deficiency**: In diabetes mellitus, there is either a deficiency in insulin production (hyposecretion) or the body’s cells become resistant to insulin. This leads to an inability to lower blood glucose levels effectively.

4. **Symptoms of Diabetes Mellitus**: The hallmark symptom of diabetes mellitus is hyperglycemia, which is an increase in blood glucose levels. Other symptoms may include increased thirst, frequent urination, fatigue, and blurred vision, but the key characteristic is the elevated glucose levels.

5. **Conclusion**: Therefore, diabetes mellitus is characterized by an increase in glucose levels in the blood due to insufficient insulin action.

**Final Answer**: Diabetes mellitus is characterized by an increase of glucose in the blood.

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