Nutrition and digestion with pancreatic cancer

Pancreatic cancer and its treatment can affect your appetite, digestion, and ability to maintain weight. This guide explains common eating challenges, pancreatic enzymes, and questions to ask your care team.

Your needs may change during treatment. A registered dietitian can help you find an approach that fits your symptoms, treatment, and preferences.

This page is general information, not medical advice. Advice from your own care team comes first.

Why eating and digestion can change

The pancreas makes enzymes that break down food so your body can absorb the nutrients in it. Pancreatic cancer can reduce the enzymes your pancreas makes, or block them from reaching your gut. Surgery and other treatments can change digestion too.

When food is not digested and absorbed properly, it is called pancreatic exocrine insufficiency. It can cause weight loss, indigestion, tummy pain, feeling sick, bloating and wind, and changes to your stool — including pale, oily stools that are hard to flush. These problems are common, they are not a personal failure, and many of them can be helped.

Ask for support from a registered dietitian

Ask early — not as an afterthought. A dietitian with experience in pancreatic cancer can assess eating difficulties, advise on nourishing food and supplements, and work with your team on enzyme-related problems.

Ask your care team:
“Can I see a registered dietitian with experience in pancreatic cancer?”
“Could problems with digestion be contributing to my weight loss or symptoms?”

Appetite changes and unintended weight loss

Losing weight without trying, feeling full quickly, and losing interest in food are all common. Approaches that often help include:

• Eating smaller meals and snacks more often, rather than three large meals.
• Adding protein and energy to ordinary foods — for example cheese, nut butters, cream, or olive oil — without greatly increasing portion size.
• Nourishing drinks or nutrition supplements, discussed with your dietitian or care team.
• Reviewing the symptoms that make eating hard — nausea, pain, taste changes, constipation — with your team, because treating the symptom often helps the eating.

There is no special diet you must follow with pancreatic cancer, and no list of foods everyone should avoid. If you are losing weight, restrictive “diet food” advice can work against you — getting enough calories and protein usually matters more.

Understanding pancreatic enzymes

Pancreatic enzyme replacement therapy — PERT — replaces the enzymes your pancreas is not providing. The enzymes are taken as capsules with meals and snacks (and with certain drinks), and they mix with food to help your body digest and absorb it. Common brand names include Creon.

PERT is prescribed, and the amount that works varies from person to person. If symptoms such as oily stools, bloating, or continued weight loss persist, ask your care team to review your prescription — how much you take, and when you take it, often need adjusting. Do not change the amount on your own without talking to the team that prescribed it.

Eating with symptoms and after treatment

Nausea. Small, frequent meals, dry foods, and eating before you feel too hungry can help. Tell your team if nausea is stopping you from eating — there are medicines that can help.

Feeling full quickly. Smaller portions more often, and drinking between meals rather than with them, may leave more room for food.

Taste changes. Treatment can change how food tastes. Many people find that adjusting seasoning, temperature, and food choices week by week works better than giving up on foods altogether.

After surgery. Eating after pancreatic surgery — including a Whipple procedure — usually changes for a while, and your surgical team and dietitian will guide what and how much you can eat as you recover.

Some situations need specific advice — for example, a stent in the duodenum can require changes to food texture. If you have been given individual advice, it takes precedence over anything on this page.

Practical help with meals

In our family, what Mom could eat was everything at the beginning; later on, some foods became an issue. Smoothies were a constant — she loved them throughout. Cookbooks written for people dealing with treatment side effects helped a lot, especially ones that adjust for changes in taste.

Preparing meals can become its own burden when you are unwell. Letting someone else take over shopping and cooking is not giving up — it is part of managing this illness. Caring for someone? Visit our Caregivers Hub for help with sharing tasks and finding support.

Questions to ask your care team

• Could digestion problems be affecting my nutrition?
• Do I need an enzyme assessment, or a review of my prescription?
• What should I do if I keep losing weight?
• Would nutrition supplements be appropriate for me?
• Do my treatment, surgery, or other conditions require specific dietary advice?

Further information and related support

• Diet and pancreatic cancer — Pancreatic Cancer UK
• Diet and nutrition for pancreatic cancer — Pancreatic Cancer Action
• Emotional and mental health support — our guide to groups, communities, and counselling
• Virtual support groups
• Palliative care and symptom support — what palliative care can help with, and questions to ask your care team
• Caregivers Hub

Sources: Canadian Cancer Society information on eating well during treatment and pancreatic enzymes, and registered-dietitian guidance for people living with pancreatic cancer.

Last reviewed: October 24, 2026. Spotted something out of date? Report it here.