What is the main cause of diabetes?

Explanation

**Step-by-Step Solution:**

1. **Understanding Diabetes**: Diabetes is a condition characterized by increased levels of glucose (sugar) in the blood. This condition can lead to various health complications if not managed properly.

2. **Role of Glucose**: Glucose is a type of sugar that is a primary source of energy for the body's cells. It is crucial to maintain normal levels of glucose in the bloodstream.

3. **Pancreas and Hormones**: The pancreas is a gland in the body that plays a vital role in regulating blood sugar levels. It secretes two important hormones:
- **Insulin**: This hormone helps to lower blood sugar levels when they are too high.
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