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The key identifying feature of HFI is the appearance of symptoms with the introduction of fructose to the diet. [5] [6] Affected individuals are asymptomatic and healthy, provided they do not ingest foods containing fructose or any of its common precursors, sucrose and sorbitol.
Fructose malabsorption, formerly named dietary fructose intolerance (DFI), is a digestive disorder [1] in which absorption of fructose is impaired by deficient fructose carriers in the small intestine's enterocytes. This results in an increased concentration of fructose. Intolerance to fructose was first identified and reported in 1956. [2]
Most sorbitol is made from potato starch, but it is also found in nature, for example in apples, pears, peaches, and prunes. [4] It is converted to fructose by sorbitol-6-phosphate 2-dehydrogenase. Sorbitol is an isomer of mannitol, another sugar alcohol; the two differ only in the orientation of the hydroxyl group on carbon 2. [5]
FODMAP. FODMAPs or fermentable oligosaccharides, disaccharides, monosaccharides, and polyols [1] are short-chain carbohydrates that are poorly absorbed in the small intestine and ferment in the colon. They include short-chain oligosaccharide polymers of fructose (fructans) and galactooligosaccharides (GOS, stachyose, raffinose), disaccharides ...
Low-FODMAP diet. A low-FODMAP diet is a person's global restriction of consumption of all fermentable carbohydrates (FODMAPs), [1] recommended only for a short time. A low-FODMAP diet is recommended for managing patients with irritable bowel syndrome (IBS) and can reduce digestive symptoms of IBS including bloating and flatulence. [2]
2. Best: Allulose. A newer sweetener on the market, allulose has a similar texture and flavor to sugar with far fewer calories and grams of carbohydrates. This sugar substitute is naturally found ...
A hydrogen breath test (or HBT) is used as a diagnostic tool for small intestine bacterial overgrowth and carbohydrate malabsorption, such as lactose, fructose, and sorbitol malabsorption. [1][2] The test is simple, non-invasive, and is performed after a short period of fasting (typically 8–12 hours). [3] Hydrogen breath tests are based on ...
Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder characterized by a group of symptoms that commonly include abdominal pain, abdominal bloating and changes in the consistency of bowel movements. [1] These symptoms may occur over a long time, sometimes for years. [2] IBS can negatively affect quality of life and may result ...