Tips if you have diarrhoea and pancreatic cancer

Pancreatic cancer can cause diarrhoea (frequent runny poo). Read our tips for dealing with this, and where to get more support.

Speak to your doctor or dietitian for advice about diarrhoea. They can work out what’s causing it and how to treat it.

Read more about diarrhoea and how it is managed.

6 tips to help with diarrhoea

  1. Eat small meals often.
  2. Drink as much as you can manage, to help prevent dehydration.
  3. It can help to avoid spicy foods, alcohol, fruit juice, tea and coffee.
  4. Do not stop eating fruit and vegetables, unless your doctor or dietitian has told you to. They are important for your health and can help to make your poo more solid.
  5. If you have very bad diarrhoea, you may need to replace salts and fluids that you have lost. Eat salty and sugary foods or drink isotonic sports drinks. Or drink a rehydrating drink such as Dioralyte®.
  6. You may worry about going out in case you can’t find a toilet when you need it. Macmillan Cancer Support have a toilet card that helps you access toilets in places like cafes and shops when you are out.

Get support with diarrhoea

If you have diarrhoea, speak to your doctor or nurse.

You can also speak to our specialist nurses on our free Support Line with any questions about diarrhoea or other symptoms.

Speak to our nurses
Specialist nurse

Updated March 2025

Review date March 2028