 Inflammatory bowel disease, IBD, is characterized by chronic inflammation of the gastrointestinal tract. It is believed to be caused by a combination of genetic and environmental factors, including a disruption in the balance of bacteria in the gut. This imbalance leads to increased intestinal permeability, allowing for the entry of antigens into the body, triggering an immune response and leading to inflammation. Clinically, this can manifest itself in two main forms, Crohn's disease and Ulcerative Colitis. Both diseases cause damage to the lining of the digestive system, resulting in symptoms such as abdominal pain, diarrhea, rectal bleeding, weight loss, fatigue, and malnutrition. Treatments include medications, surgery, and lifestyle modifications. This article was authored by Andrea Michelen and Renata Dienker.