IBD Diet 2025: The latest scientific findings on prevention

Inflammatory bowel diseases (IBD) - Crohn's disease and ulcerative colitis - are affecting more and more people around the world, including Hungary. It is estimated that around 55 000 patients in Hungary live with this chronic condition. Although the exact causes are not yet fully understood, in addition to genetic predisposition, lifestyle factors, particularly diet, play a key role in the development and course of the disease. Many people fear diagnosis and the necessary tests, but proper information and conscious dietary planning can go a long way towards alleviating symptoms and preventing the disease.

This article provides a comprehensive overview of what can be done to prevent IBD through nutrition in the light of the latest scientific findings. Our aim is to provide clear, practical advice to help anyone who wants to reduce their risk or live a fuller life with their existing condition. Visit Endomedix Gastroenterology Centre experts are committed to providing their patients with the most up-to-date knowledge for effective prevention and treatment.

What exactly is IBD?

Before we get to the dietary suggestions, it is important to clarify what inflammatory bowel disease is. IBD is an umbrella term that covers two main types of disease:

• Crohn's disease (CD): This chronic inflammatory condition can affect any part of the digestive tract, from the mouth to the rectum, and can involve all layers of the intestinal wall. It is characterised by „skip” lesions, i.e. diseased sections of the intestine are separated by healthy ones. Common symptoms include abdominal pain, diarrhoea, weight loss and malabsorption.
• Ulcerative colitis (UC): It is a chronic ulcerative inflammation of the lining of the colon, typically starting in the rectum and spreading steadily upwards from there. The most common symptoms are bloody, pus-filled diarrhoea and an urgent urge to defecate.

Both diseases are autoimmune in origin, which means that the immune system mistakenly attacks the body's own cells, in this case the cells of the intestinal tract. Although genetic predisposition (e.g. mutation in the NOD2/CARD15 gene) increases the risk of developing the disease, environmental factors, including diet, trigger the inflammatory process.

The role of diet in preventing IBD

A modern, Western-style diet - high in processed foods, refined carbohydrates, fat and red meat, but low in fibre - is increasingly being linked by research to an increased risk of IBD. Let's see which dietary factors have the biggest impact on the development of the disease!

Fibres: friends of the gut flora

High fibre intake has been shown to reduce the risk of developing Crohn's disease. But why is fibre important?

• They feed the „good” bacteria: The balance of the gut flora is key to the proper functioning of the immune system. Soluble fibres (e.g. found in oats, barley, apples, carrots) act as prebiotics, i.e. they provide food for beneficial gut bacteria.
• Butyrate is produced: These bacteria produce short-chain fatty acids, such as butyrate, during the fermentation of fibres. Butyrate is the main source of energy for the epithelial cells of the colon and has a strong anti-inflammatory effect.

Proposal: Gradually increase your fibre intake! Eat more whole grains, vegetables, fruit and pulses. If you experience bloating, start with smaller portions and give your body time to adjust.

Fats: It matters what we eat

The type of fat has a significant influence on the inflammatory processes.

• Omega-3 fatty acids (beneficial): These fatty acids have anti-inflammatory properties. Research suggests that they may be beneficial in both Crohn's disease and ulcerative colitis. Their best sources are marine fish (salmon, mackerel, herring), flaxseed and nuts.
• Omega-6 fatty acids and saturated fats (to be avoided): The predominance of omega-6 fatty acids (sunflower oil, corn oil) and saturated fats (red meat, fatty dairy products, processed foods) in the Western diet can contribute to inflammation.

Proposal: Include seafood in your diet at least twice a week! Use more olive oil for cooking and reduce your intake of red meat and processed, high-fat foods. From Endomedix Gastroenterology Centre dietitians can give you personalised advice to help you achieve the right fat intake.

Proteins and the role of sulphur

Certain protein sources, especially those high in sulphur (e.g. red meat), can contribute to inflammatory processes. Intestinal bacteria produce hydrogen sulphide from sulphur-containing amino acids, which in high concentrations can damage the intestinal lining and increase inflammation.

Proposal: Prefer poultry, fish and vegetable protein sources (e.g. lentils, chickpeas, tofu) instead of red meat.

Vitamins and minerals

• Vitamin D: Patients with IBD are often deficient in vitamin D, which plays an important role in the regulation of the immune system. Supplementing this deficiency can be beneficial, especially in Crohn's disease. Its main source is sunlight, but it is also found in egg yolks and fortified foods.
• Calcium, zinc, vitamin B12: In case of malabsorption, deficiencies of these substances may also occur, so it is important to supplement them properly under medical supervision.

Lifestyle factors that matter

In addition to diet, other factors influence the risk of IBD:

• Smoking: It nearly doubles the risk of Crohn's disease and worsens the course of the disease, increasing the chance of complications such as strictures or fistulas (abnormal fistulae). Interestingly, smoking cessation can have a negative effect on the course of ulcerative colitis.
• Antibiotics: Antibiotic courses in early childhood can disrupt the healthy development of gut flora, which can increase the risk of developing IBD, especially Crohn's disease, later in life.
• Breastfeeding: Breastfeeding is considered a protective factor and can reduce the likelihood of developing IBD.

What science promises for 2025: Prevention strategies for the future

Research is ongoing and more is known about the link between IBD and diet. The future lies in personalised prevention that takes into account an individual's genetic background, gut flora composition and lifestyle characteristics. It is expected to become increasingly important:

• Microbiome-based therapies: Targeted dietary interventions that aim to restore the balance of gut flora.
• Specific nutrients: Researchers are investigating the effect of targeted intake of certain amino acids, fatty acids and plant compounds (polyphenols) in preventing inflammation of the gut.
• FODMAP diet in prevention? Although the low FODMAP (fermentable oligo-, di-, mono- and polysaccharides) diet is currently mainly used to alleviate the symptoms of irritable bowel syndrome (IBS), its role in preventing IBD is also being investigated, as it reduces intestinal fermentation and gas formation.

From diagnosis to treatment: the role of the Endomedix Gastroenterology Centre

Ha emésztőrendszeri panaszai vannak, ne halogassa a kivizsgálást! Az időben történő diagnózis kulcsfontosságú a hatékony kezeléshez és a súlyos szövődmények elkerüléséhez. Az Endomedix Gastroenterology Centre modern diagnosztikai eljárásokat kínál, amelyek segítenek a pontos diagnózis felállításában:

• Colonoscopy (colonoscopy of the colon): Az IBD diagnosztikájának és követésének alapvető eszköze, amely lehetővé teszi a nyálkahártya vizsgálatát és szövettani mintavételt.
• Vékonybél-kapszulaendoszkópia: Crohn-betegség gyanúja esetén, ha a vékonybél érintettségét a hagyományos tükrözés nem tudja igazolni, ez a fájdalommentes eljárás részletes képet ad a vékonybél állapotáról.

Szakorvosaink és dietetikusaink a diagnózis felállítása után személyre szabott terápiás és étrendi tervet dolgoznak ki, amely segít a tünetmentesség elérésében és fenntartásában.

A következő lépések az egészségesebb emésztőrendszerért

Az IBD megelőzése egy tudatos, hosszú távú elköteleződést igénylő folyamat, amelyben az étrend központi szerepet játszik. A rostban gazdag, növényi alapú ételek előnyben részesítése, az omega-3 zsírsavak bevitele, valamint a feldolgozott élelmiszerek és a vörös húsok kerülése mind hozzájárulhatnak a bélrendszer egészségének megőrzéséhez és a gyulladások kockázatának csökkentéséhez.

Ne feledje, a megelőzés mindig egyszerűbb, mint a már kialakult betegség kezelése. Ha Ön vagy családtagja a kockázati csoportba tartozik, vagy tartós emésztőrendszeri panaszokat tapasztal, forduljon bizalommal az Endomedix Gastroenterology Centre szakembereihez. Szakértő csapatunk készen áll, hogy segítsen Önnek a megelőzésben, a pontos diagnózis felállításában és a leghatékonyabb, személyre szabott kezelési terv kialakításában. Tegyen egy lépést az egészsége érdekében még ma!