The pancreas produces insulin. The structures within the pancreas that produce insulin are the islets of Langerhans, located in the beta cells. Insulin is a hormone used to regulate the glucose or sugar levels in the blood.
The human body uses glucose as an energy source. When food is consumed, the glucose levels rise, promoting the body to release insulin. Insulin communicates with different cells of the body, prompting them to open up, receive the glucose and increase their energy.
Diabetes is a health condition in which the cells have a resistance to insulin or the pancreas does not produce enough. With a lack of insulin or resistance to insulin, the levels of glucose in the blood rise, creating more health problems.