IBS & Parasites What Is IBS and Why Is It So Common? Irritable bowel syndrome (IBS) is one of the most prevalent functional gastrointestinal disorders worldwide. While it does not cause structural damage to the intestines, its symptoms can significantly impact daily life. Common symptoms include: Bloating Abdominal pain Constipation Diarrhea Alternating bowel habits IBS is considered a multifactorial condition, meaning it rarely has just one cause. Instead, it often develops