The organ in the body that produces insulin is the pancreas. This vital gland functions both as an endocrine and exocrine organ, playing a crucial role in regulating blood sugar levels. When blood sugar rises after eating, the pancreas releases insulin into the bloodstream. Insulin helps cells in the body absorb glucose, which they use for energy or store for later use. In individuals with diabetes, the pancreas either does not produce enough insulin or the body becomes resistant to its effects, leading to elevated blood sugar levels that can result in various health complications if not managed properly.