When to worry about unexplained weight loss with pancreatic cancer

Pancreatic cancer can affect digestion, appetite and the body's use of nutrients. Pain, nausea, early fullness, changes in bowel habits or treatment side effects may make eating difficult. Weight can also fall when the pancreas does not release enough digestive enzymes. Weight loss alone cannot show whether cancer has changed, so your team will consider your symptoms, examination and treatment history together.

Tell your oncology team when you first noticed the change and whether your appetite, meals, bowel movements or blood sugar symptoms have changed. Keep a simple record of meals, nausea, vomiting and weight if your clinician recommends it. Ask whether a dietitian, pancreatic enzyme replacement or changes to symptom medicines could help you maintain nourishment. Do not start supplements without checking, because some products can interfere with treatment.

Contact your cancer team promptly if you cannot keep fluids down, have repeated vomiting, worsening abdominal pain, yellowing of the skin or eyes, confusion, faintness or marked weakness. Seek emergency help for severe breathing difficulty, collapse or inability to stay awake. These signs need assessment regardless of the amount of weight lost.

Could digestion, treatment side effects or another condition be contributing to my weight loss? Should I see a dietitian? Would pancreatic enzymes or a change in symptom control be appropriate? Which changes should prompt a same-day call?