How Gut Bacteria (SIBO) Create Pressure and Reflux

TL;DR: SIBO (Small Intestinal Bacterial Overgrowth) occurs when bacteria colonize the small intestine, where they typically do not belong in large numbers. These bacteria ferment carbohydrates, producing gas that raises intra-abdominal pressure and can force open the lower esophageal sphincter. Research strongly links SIBO and GERD, with a 2025 study finding GERD is an independent […]