The pancreas has two main jobs in your body

Your pancreas is a small organ about the size of your hand, tucked behind your stomach. It does two very different things: it makes digestive juices that break down food, and it makes hormones that control your blood sugar. When you have pancreatitis, one or both of these functions can be affected, which is why understanding what the pancreas normally does helps explain what goes wrong.

The pancreas sits in a tricky spot—it's connected to your small intestine through a tube called the pancreatic duct, and it's also woven into your bloodstream. This location lets it do its two jobs at once, but it also means problems in one part can affect the other.

Key Takeaways

  • The pancreas makes digestive enzymes that break down fats, proteins, and carbohydrates in your small intestine.
  • The pancreas also produces insulin and glucagon, two hormones that keep your blood sugar at a safe level.
  • When the pancreas is inflamed (pancreatitis), these digestive enzymes can leak into surrounding tissue and cause damage.
  • Chronic pancreatitis can scar the pancreas over time, making it harder for it to produce both digestive enzymes and hormones.

How the pancreas breaks down food

Part of your pancreas acts like a factory that makes digestive juices. These juices contain enzymes—proteins that cut apart the different parts of food so your body can absorb them. The pancreas makes enzymes for fats, enzymes for proteins, and enzymes for carbohydrates. When you eat, these enzymes travel down the pancreatic duct and empty into your small intestine, where they do their work.

The pancreas also makes a substance called bicarbonate, which is basic (the opposite of acidic). This bicarbonate neutralizes the acid that comes from your stomach, so the enzymes can work properly in your small intestine. Without this balance, the enzymes wouldn't function and you wouldn't be able to digest your food.

When pancreatitis happens, the pancreas becomes inflamed and swollen. In acute pancreatitis, the enzymes can leak backward into the pancreas itself and the tissue around it, causing pain and damage. In chronic pancreatitis, repeated inflammation scars the pancreas, and over time it produces fewer and fewer enzymes. This is why people with chronic pancreatitis often have trouble digesting fats and may lose weight.

How the pancreas controls blood sugar

Another part of your pancreas—separate from the enzyme-making part—produces hormones. The two most important are insulin and glucagon. These hormones work like a thermostat for your blood sugar, keeping it in a safe range.

When you eat and your blood sugar rises, insulin tells your cells to take in that sugar and use it for energy or store it. When your blood sugar drops (like between meals or during exercise), glucagon tells your liver to release stored sugar back into your bloodstream. This back-and-forth keeps your blood sugar steady without you having to think about it.

Chronic pancreatitis can damage the cells that make insulin and glucagon. When enough of these cells are scarred, the pancreas can't produce enough hormone, and blood sugar control becomes difficult. Some people with chronic pancreatitis develop pancreatogenic diabetes—diabetes caused by pancreas damage rather than the more common type 2 diabetes. This usually happens after years of chronic inflammation.

What happens when the pancreas is inflamed

In acute pancreatitis, the pancreas swells suddenly, usually because a gallstone blocks the pancreatic duct or because of alcohol use. The swelling traps the digestive enzymes inside the pancreas instead of letting them flow into the intestine. These trapped enzymes start digesting the pancreas itself, causing pain, inflammation, and sometimes serious damage. Most people recover from acute pancreatitis, but it can be life-threatening if it's severe.

Chronic pancreatitis is different—it's long-lasting inflammation that scars the pancreas over months or years. The scarring makes the ducts narrower and stiffer, so enzymes can't flow freely. The pancreas also shrinks and hardens. Over time, both the digestive function and the hormone-making function decline. This is why chronic pancreatitis can lead to both digestion problems and blood sugar problems.

How doctors test pancreatic function

Doctors have several ways to check whether your pancreas is working normally. Blood tests can measure pancreatic enzymes (amylase and lipase) that leak into the bloodstream when the pancreas is inflamed. They can also measure how much insulin your pancreas is making and how well your blood sugar is controlled.

Imaging tests like ultrasound, CT scan, or MRI can show whether the pancreas is swollen, scarred, or has blockages in the ducts. Some doctors order a fecal elastase test, which measures how much digestive enzyme is in your stool—a low number means your pancreas isn't making enough enzymes.

If your doctor suspects chronic pancreatitis, they might order a secretin stimulation test, where they give you a hormone called secretin and then measure how much bicarbonate and enzymes your pancreas produces in response. This test directly measures whether the pancreas can still do its job.

How pancreatic function changes with pancreatitis

In acute pancreatitis, pancreatic function usually returns to normal once the inflammation goes down—often within a few weeks. The pancreas heals and starts making enzymes and hormones normally again. However, if acute pancreatitis is very severe, it can cause permanent scarring and lasting damage.

In chronic pancreatitis, pancreatic function gets worse over time. Early on, you might have pain but still digest food fairly well. As scarring increases, you may start having trouble absorbing fats (which causes greasy, floating stools) or trouble controlling blood sugar. By the time chronic pancreatitis is advanced, the pancreas may be producing only a fraction of the enzymes and hormones it should.

The rate at which function declines varies from person to person. Some people have slow decline over decades, while others lose function more quickly. Stopping alcohol use (if that's the cause) can slow the decline, but it usually doesn't reverse scarring that's already happened.

What you can do to protect pancreatic function

If you've had pancreatitis, protecting your remaining pancreatic function matters. The most important step is avoiding alcohol, which is a major cause of both acute and chronic pancreatitis. Even moderate drinking can trigger inflammation if your pancreas is already damaged.

Eating a low-fat diet helps because fat is harder for a damaged pancreas to digest. Your doctor may recommend pancreatic enzyme supplements (taken by mouth with meals) if your pancreas isn't making enough enzymes on its own. These supplements help you absorb nutrients and can reduce symptoms like bloating and loose stools.

If chronic pancreatitis has affected your blood sugar control, managing your diet and blood sugar becomes important, just as it would with diabetes. Regular check-ups let your doctor track how your pancreatic function is changing and adjust treatment as needed.

Frequently Asked Questions

Can the pancreas heal itself after pancreatitis?

After acute pancreatitis, the pancreas usually heals completely and function returns to normal. With chronic pancreatitis, scarring is permanent and the pancreas cannot fully repair itself, though the inflammation can be controlled to slow further damage.

Will I develop diabetes if I have chronic pancreatitis?

Not everyone with chronic pancreatitis develops diabetes, but the risk increases over time as more of the insulin-making cells are damaged. Your doctor can monitor your blood sugar and watch for signs that diabetes is developing.

What does it mean if my pancreatic enzymes are high?

High amylase or lipase in your blood usually means the pancreas is inflamed and enzymes are leaking into your bloodstream. This is a sign of acute pancreatitis or a flare-up of chronic pancreatitis, and your doctor will want to find out what's causing the inflammation.

Can I live normally with reduced pancreatic function?

Many people live well with reduced pancreatic function by taking enzyme supplements with meals, eating a low-fat diet, and managing blood sugar if needed. The key is working with your doctor to monitor your function and adjust treatment as your pancreas changes.

How often should I have my pancreatic function tested?

If you have chronic pancreatitis, your doctor will likely check your pancreatic function periodically—how often depends on how severe your condition is and how quickly your function is declining. Ask your doctor what schedule makes sense for you.