Side Effects of Bowel Surgery

Bowel surgery can be an important part of bowel cancer treatment, but it may also cause side effects during recovery. Some side effects improve with time, while others may need ongoing support from doctors, nurses, dietitians, physiotherapists or stoma nurses.

This article is for general information only. If you have new, severe or worrying symptoms after surgery, contact your healthcare team promptly.

Common Side Effects After Surgery

Common side effects after bowel surgery may include tiredness, pain, wound discomfort, bowel habit changes, appetite changes, wind, bloating or temporary weakness.

Your hospital team should explain what is expected and what symptoms need urgent attention.

Bowel Habit Changes

After part of the bowel is removed, bowel habits may change. Some people have looser stools, constipation, urgency, more frequent bowel movements or difficulty controlling bowel movements.

For more detail, read our Managing Bowel and Dietary Changes article.

Diet and Appetite Changes

Some people need to adjust food choices after surgery, especially during early recovery. Appetite may be reduced, and certain foods may cause discomfort, wind or diarrhoea.

A dietitian can help if eating is difficult, weight is changing or symptoms continue. Read our Diet After Treatment guide.

Fatigue

Fatigue is common after major surgery. It can take weeks or months to rebuild strength. Rest is important, but gentle activity may also help if your doctor says it is safe.

Ask your healthcare team what level of activity is appropriate during recovery.

Stoma-Related Side Effects

Some people need a temporary or permanent stoma after bowel surgery. This can involve learning how to use a stoma bag, protect the skin and manage output.

For more information, visit our Having a Stoma and Living With a Stoma articles.

Sexual and Bladder Changes

Some people may experience changes in sexual function, bladder function or pelvic comfort after bowel surgery, especially after surgery involving the rectum or pelvis.

If this happens, talk with your healthcare team. Support may be available. You may also read our Sexuality After Bowel Cancer Treatment article.

When to Seek Medical Help

Contact your healthcare team urgently if you have fever, worsening pain, vomiting, heavy bleeding, wound redness or discharge, severe diarrhoea, inability to pass stool or gas, chest pain, shortness of breath or signs of dehydration.

Final Thoughts

Side effects of bowel surgery can affect daily life, but many can be managed with the right support. Keep follow-up appointments, report symptoms early and ask your healthcare team for practical help during recovery.