Yes, the pancreas is an organ. It is also a gland, and in fact it functions as both simultaneously. The pancreas is sometimes called a “dual organ” because it operates like two systems in one: it produces digestive enzymes and releases hormones that regulate blood sugar. This dual role makes it one of the few structures in the body that belongs to both the digestive system and the endocrine (hormone-producing) system.
Why It’s Called a Dual Organ
The confusion about whether the pancreas is an organ or a gland comes from the fact that it genuinely qualifies as both. An organ is any structure made of multiple tissue types that performs a specific function. A gland is a structure that produces and secretes substances. The pancreas checks both boxes, which is why medical sources alternate between calling it an organ and a gland depending on the context.
About 95% of the pancreas is made up of exocrine tissue, which produces digestive enzymes. The remaining tissue consists of tiny clusters of hormone-producing cells called islets of Langerhans. These two systems operate independently within the same organ, each with its own job and its own delivery route. Digestive enzymes flow through ducts into the small intestine. Hormones go directly into the bloodstream.
What the Pancreas Looks Like
The pancreas is a soft, lobulated structure roughly 12 to 15 centimeters long, shaped something like a tadpole or a hockey stick. It sits deep in the abdomen, tucked behind the stomach in a space called the retroperitoneal area, meaning it’s positioned against the back wall of the abdominal cavity rather than hanging freely like the intestines. The average volume in adults ranges from 40 to 170 cubic centimeters, with men tending to have slightly larger pancreases than women.
How It Helps You Digest Food
The exocrine function, which accounts for the vast majority of the pancreas, is all about breaking down what you eat. When food enters the stomach, the pancreas releases a cocktail of enzymes into the small intestine through a network of small ducts. Three key enzymes do the heavy lifting:
- Lipase works alongside bile from the liver to break down dietary fats.
- Protease breaks down proteins and also helps protect against certain bacteria and yeast that may live in the intestines.
- Amylase converts starches into sugars your body can use for energy.
Without these enzymes, your body cannot properly absorb nutrients from food. People who lose pancreatic function need to take enzyme replacement pills before every meal to avoid vitamin deficiencies, diarrhea, fatty stools, and even severe osteoporosis over time.
How It Controls Blood Sugar
The endocrine side of the pancreas is smaller but equally critical. The islets of Langerhans contain several types of specialized cells, with beta cells at the core producing insulin and alpha cells producing glucagon. These two hormones work as a counterbalance system to keep blood sugar stable.
Insulin is released when blood sugar rises, such as after a meal. It signals cells in your muscles, fat, and liver to absorb glucose from the bloodstream and use it for energy or store it for later. Glucagon does the opposite: when blood sugar drops too low, the pancreas pumps out glucagon, which triggers the liver to convert its stored glucose back into a usable form and release it into the blood. Glucagon also prompts the body to manufacture glucose from other sources, like amino acids. Together, the two hormones keep blood sugar within a narrow, safe range throughout the day.
What Happens When the Pancreas Fails
Because the pancreas serves two essential systems, problems with it can show up in very different ways. When the insulin-producing beta cells are destroyed or stop working, the result is diabetes. When the organ becomes inflamed, a condition called pancreatitis, it can damage both the endocrine and exocrine tissues at once. The mechanisms overlap, too: pancreatitis can trigger diabetes through loss of islet cells, autoimmune reactions, inflammatory responses, or a combination of these factors.
Pancreatic cancer remains one of the most difficult cancers to treat, largely because it is rarely caught early. The overall five-year survival rate is 13.7%. When detected while still confined to the pancreas, that figure jumps to 43.6%, but once the cancer has spread to distant sites, survival drops to 3.4%.
Can You Live Without a Pancreas?
You can survive without a pancreas, but it requires significant daily management. After a total pancreatectomy (complete removal), patients need to take enzyme pills before every meal to digest food and inject insulin one to four times a day to manage blood sugar. Some people use insulin pumps instead, which deliver a steady infusion of insulin through a small tube under the skin.
The loss of glucagon is actually the bigger medical concern. Without it, there is no built-in safety net to prevent blood sugar from plummeting to dangerous levels. Skipping insulin injections can lead to the complications of uncontrolled diabetes, including nerve damage, kidney failure, vision loss, heart attack, and stroke. The pancreas is a small, easy-to-overlook organ, but losing it means manually replacing two entirely separate biological systems for the rest of your life.