What this experience covers
This experience describes what people eat after fistulotomy surgery — the dietary patterns that support recovery, the foods that help keep stools soft and manageable, and the ones that people learn to avoid during the healing period. It is a composite drawn from many anonymised accounts.
The pattern
Why diet matters after fistulotomy
The fistulotomy wound heals from the inside out, and every bowel movement passes through or near the healing area. The consistency of the stool directly affects comfort and healing. Hard stools cause pain and can disrupt the wound. Very loose stools can irritate the wound and complicate hygiene.
The goal: soft, formed, easy-to-pass stools. Not too hard, not too loose.
The first few days
People describe eating very simply in the first two to three days:
- Soups and broths
- Porridge or soft cereal
- Yoghurt and soft fruits
- White bread or toast
- Scrambled eggs
- Plenty of water and warm drinks
The focus is on gentle, easy-to-digest food that produces soft stools. Most people are not very hungry during this period anyway.
Building back
From day three or four onwards, people describe gradually introducing more variety:
- Fruits and vegetables, initially cooked or soft
- Whole grains introduced gradually to avoid sudden bloating
- Lean proteins — chicken, fish, eggs
- Adequate fibre built up slowly rather than added all at once
Foods people find helpful
- High-fibre fruits: pears, kiwi, berries, prunes
- Vegetables: sweet potato, spinach, courgette, peas
- Whole grains: oats, brown rice (introduced gradually)
- Legumes: lentils, chickpeas (introduced gradually)
- Water: consistently two to three litres daily
- Warm drinks: described by many as helping with morning bowel movements
Foods people learn to avoid
- Spicy food: commonly described as causing burning during bowel movements
- Very fatty or greasy food: can cause loose stools
- Excessive dairy: some people find it constipating
- Processed and low-fibre food: white bread, fast food, snacks — contribute to harder stools
- Alcohol: dehydrating and can affect stool consistency
- Caffeine in excess: can cause loose stools in some people
The long-term shift
Many people describe their post-fistulotomy diet becoming their permanent diet — not because they are still recovering, but because they feel better eating this way. Higher fibre, more water, fewer processed foods. The fistulotomy becomes the prompt for a lasting change.
What people wish they had known
That diet planning before surgery matters as much as after. People who had stool softeners and a good diet established before their procedure describe a smoother early recovery than those who started making changes afterwards.
When to contact your doctor
Seek medical attention if you experience:
- Persistent constipation despite dietary changes and stool softeners
- Diarrhoea that will not settle
- Increasing pain at the wound site
- Fever or signs of infection
- Any symptoms that concern you