To solve the problem, we need to identify which gland is related to diabetes.
1. Understanding Diabetes:
Diabetes is a metabolic disorder characterized by high blood sugar levels. It is primarily caused due to the improper production or utilization of insulin, a hormone that regulates glucose levels in the blood.
2. Role of Pancreas:
The pancreas is the gland responsible for producing insulin through its beta cells located in the Islets of Langerhans. Dysfunction or destruction of these cells leads to diabetes mellitus.
Final Answer:
Diabetes is related to the \( {\text{Pancreas}} \).