FODMAP stands for fermentable oligosaccharides, disaccharides, monosaccharides, and polyols. FODMAPs generate gas as side effect of being fermented in the gut. Most people just pass this gas, but for some people, usually people with irritable bowel syndrome (IBS), it can be very uncomfortable and amplify their other IBS problems.

People who are suffering from pain and bloating with no obvious cause may be advised to go on a low-FODMAP diet for a few weeks to see if their symptoms go away.