Diet for Crohn’s disease: What can you eat, and what should you avoid?

Crohn’s disease is a chronic inflammatory bowel disease that can affect any part of the digestive system, from the mouth right through to the rectum. For patients, everyday life can be a challenge, as abdominal pain, diarrhoea and fatigue can significantly affect their quality of life. Although there is no definitive cure for Crohn’s disease, appropriate treatment – including medication and lifestyle changes – can help to alleviate symptoms and achieve long-term remission (a symptom-free period).

Diet plays a key role in the management of this condition. A balanced diet not only helps to prevent flare-ups of symptoms, but also helps to replenish the energy and nutrients the body needs. For many patients, however, it is not clear what they can eat and what they should avoid.

In this article, we set out the basic principles of the Crohn’s disease diet in detail. We provide practical advice on how to put together a diet that promotes well-being and helps to prevent flare-ups of the condition. The Endomedix Gastroenterology Centre Our experts are committed to ensuring that patients have access to the most up-to-date and reliable information.

The role of diet in Crohn’s disease

It is important to note that there is no single „Crohn’s diet” that works the same way for everyone. A diet should always be tailored to the individual, depending on the current stage of the disease (active or remission), the sections of the bowel affected and individual tolerance. The aim is for the diet to help reduce inflammation, prevent nutrient deficiencies and minimise unpleasant gastrointestinal symptoms.

Nutrition plays a different role in two main stages:

• Active (flare-up) phase: During this period, the most important thing is to relieve the strain on the digestive system and alleviate symptoms such as diarrhoea and abdominal cramps. A low-fibre diet that is easier to digest is recommended at this time.
• Remission phase: Once the symptoms have eased or disappeared completely, the aim is to gradually reintroduce a balanced, nutrient-rich diet that supports long-term health and helps prevent further flare-ups.

Practical advice on putting together a diet

Developing a suitable diet is a process of trial and error, during which the patient must pay attention to their body’s signals. Keeping a food diary can be very helpful in identifying which foods trigger symptoms. We provide general guidelines below, but it is always advisable to consult a gastroenterologist and a dietitian. The Endomedix Gastroenterology Centre Our experts are on hand to help you with personalised advice.

What should you eat during the remission phase of Crohn’s disease?

During the remission phase, the aim is to follow a varied and nutrient-rich diet.

• Low-fat proteins: Proteins are essential for the body’s recovery. Choose lean meats such as chicken or turkey breast (skinless), fish, eggs and tofu. Fish, particularly varieties rich in omega-3 fatty acids (e.g. salmon), can have anti-inflammatory effects.
• Fruits and vegetables that are well tolerated: To begin with, it is best to eat them peeled and seeded, either steamed or boiled. Good choices include bananas, cantaloupe, cooked carrots, pumpkin and courgettes. As your tolerance improves, you can gradually introduce raw versions as well.
• Refined cereals: Although whole grains are generally healthier, their high fibre content can be irritating for people with Crohn’s disease. During a remission, products made from refined grains, such as white rice, white bread or gluten-free porridge, are easier to digest.
• Healthy fats: Oils rich in omega-3 fatty acids, such as olive oil and linseed oil, as well as avocados, may have beneficial effects.
• Probiotics: Fermented foods, such as yoghurt, kefir or sauerkraut (if you can tolerate them), can help restore the balance of your gut flora.

What should you avoid, or consume in moderation?

Certain foods can make the symptoms worse, particularly during the active phase of the illness.

• High fibre foods: Raw vegetables (e.g. broccoli, cauliflower, kale), whole grains, nuts, seeds and pulses (beans, lentils) can be difficult for an inflamed digestive system to digest.
• Lactose: Many people with Crohn’s disease are lactose intolerant, which means that dairy products can cause bloating, cramps and diarrhoea. It is worth trying lactose-free dairy products or plant-based alternatives (e.g. almond milk, rice milk).
• Fatty, spicy, fried foods: These foods may irritate the intestinal lining and make diarrhoea worse.
• Sugary foods and drinks: Soft drinks and sweets with a high sugar content can make diarrhoea worse and lead to an imbalance in the gut flora.
• Alcohol and caffeine: Both can stimulate bowel function and make the symptoms worse.
• Artificial sweeteners: Products containing sorbitol and other sugar alcohols (e.g. chewing gum, diet foods) may cause diarrhoea.

Diet during the active, flare-up phase of the disease

When symptoms worsen, a gentle, so-called low-residue diet is recommended to allow the digestive system to rest.

• Focus on liquid or puréed foods, such as cream soups, smoothies (made from well-tolerated fruits) and mashed potatoes.
• Eat refined grains, such as white rice or pasta.
• Protein sources should be easily digestible: steamed fish, boiled chicken.
• Avoid all raw vegetables, fruit and high-fibre foods.
• Make sure you drink enough fluids (water, weak tea) to prevent dehydration.

Prevention and treatment of nutrient deficiencies

Crohn’s disease often leads to malabsorption, which can cause nutrient deficiencies. Due to chronic inflammation and diarrhoea, the body finds it more difficult to absorb the vitamins and minerals it needs.

Common deficiencies:

• Iron deficiency: It can lead to anaemia, which is accompanied by tiredness and weakness.
• Vitamin B12 deficiency: It is particularly common when the final section of the small intestine (the ileum) is affected. It can cause fatigue and neurological symptoms.
• Vitamin D and calcium deficiency: Long-term steroid treatment and reduced absorption increase the risk of osteoporosis.
• Zinc, magnesium, folic acid: They are also important for the immune system and general health.

It may be necessary to replenish these nutrients in the form of dietary supplements. Be sure to seek advice from your GP or a specialist gastroenterologist to choose the correct dose and type. The Endomedix Gastroenterology Centre It also offers comprehensive diagnostics and a personalised treatment plan for the management of nutrient deficiencies.

Next steps: What happens next?

The key to living with Crohn’s disease is to be proactive and to pay attention to your body’s signals. Diet is no substitute for medication, but it can be an effective complement to it in controlling symptoms and improving quality of life.

Remember, you are not alone in facing this problem. Appropriate specialist support is essential. If you have symptoms, or feel that your current diet is unsuitable, do not hesitate to seek help. An experienced gastroenterologist can help to clarify the diagnosis, determine the appropriate treatment and provide personalised dietary advice.

From Endomedix Gastroenterology Centre It welcomes patients with modern diagnostic equipment and a highly qualified team of specialists, ensuring they receive the best possible care in the treatment of Crohn’s disease and other gastrointestinal conditions.