Fermentable, oligosaccharides, disaccharides, monosaccharides and polyols, i.e. FODMAPs, are a family of carbohydrates that are poorly absorbed the the gastrointestinal tract – and that means bloating, gas and constipation. This is particiularly pertinent for anyone with irritable bowel syndrome (IBS). You'd be surprised which foods contain FODMAPs, a sample includes apples, wheat products (like bread, biscuits or pasta), legumes, cows milk, cashews, onions and garlic.