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Pancreatic Insufficiency
Pancreatic insufficiency means too few digestive enzymes. Fat, protein, and fat-soluble vitamins go unabsorbed. We look at causes, nutrient losses, upstream signaling, and the vagus nerve.
What you may be noticing
Pale, greasy, or floating stools that are hard to flush. Bloating and gas after fatty meals. An oily film in the toilet. Weight loss despite eating well. Fatigue, dry skin, easy bruising, or night vision changes that may reflect low fat-soluble vitamins.
Severe upper abdominal pain radiating to the back, jaundice, or unexplained weight loss need urgent medical evaluation.
Why it is rarely one thing
The pancreas produces lipase for fat, protease for protein, and amylase for starch. Their release depends on signals: the vagus nerve during the cephalic phase, and hormones such as cholecystokinin, released from the gut lining when acid, fat, and protein reach the upper small intestine. When enzyme output falls, food passes through undigested.
Established causes include chronic pancreatitis, cystic fibrosis, pancreatic surgery, long-standing diabetes, celiac disease, and pancreatic tumors. Milder insufficiency also appears with aging and after gut surgery. In functional medicine we also consider weak upstream signaling, from low stomach acid or a stressed nervous system, a working hypothesis for milder cases. Not only an organ that stopped working, but sometimes an organ not receiving the signal to work.
This is why I think upstream. In my 8R gut model the Replace step looks at stomach acid, bile flow, pancreatic signaling, and mineral cofactors together, because digestion is a cascade. Without enough fat absorption, vitamins A, D, E, and K decline and the microbiome shifts as undigested food reaches the colon. Fecal elastase, a simple stool test unaffected by enzyme supplements, estimates pancreatic output and can change the plan.
Patterns we look for
- Fecal elastase, a marker of pancreatic enzyme output.
- Fat in stool.
- Vitamins A, D, E, and K.
- Blood sugar regulation, since the pancreas also makes insulin.
- Celiac disease.
- Low stomach acid and bile flow upstream.
- Alcohol history and pancreatitis risk.
- SIBO and microbiome shifts from undigested food.
- Vagal tone and autonomic balance.
How I evaluate it
The comprehensive functional neurological exam includes autonomic and vagal assessment, since enzyme release depends in part on vagal signaling.
Functional labs may include fecal elastase, a comprehensive stool analysis, vitamins A, D, E, and K, a lipid panel, fasting glucose and HbA1c, celiac antibodies, and a comprehensive metabolic panel. I coordinate imaging and gastroenterology care when structural disease is possible.
How we address it
- Confirm the diagnosis and rule out serious pancreatic disease with your physician.
- Replace enzymes with meals when indicated, prescribed and dosed with your care team.
- Replete fat-soluble vitamins and monitor levels.
- Support the upstream cascade: stomach acid, bile flow, and calm, seated eating.
- Strengthen vagal tone with slow breathing before meals to support digestive signaling.
- Rebalance blood sugar.
- Restore microbiome balance and address SIBO.
When food is truly digested, the whole body receives the nourishment it has been missing.
Book your Comprehensive Functional Medicine Eval/Neurological Exam today to discover what the contributing root causes are that are underlying your health concerns.