What is the FODMAP diet? 

FODMAPs are fermentable oligo-, di-, and monosaccharides and polyols that are poorly absorbed in the small intestine.

A diet high in FODMAPs has been associated with higher levels of hydrogen produced in the breath in both IBS patients and healthy individuals as well as GI symptoms and lethargy in IBS patients, but not in healthy individuals.

Conversely, a diet low in FODMAPs has been associated with lower levels of hydrogen production in both IBS patients and healthy individuals as well as a reduction in bloating, abdominal pain, flatulence, and overall symptoms in IBS patients as compared with a normal diet.

It is likely that a low FODMAP diet reduces the fermentation of these carbohydrates and subsequent hydrogen production, therefore reducing IBS symptoms such as bloating, abdominal pain, and flatulence.

The FODMAP diet

High FODMAP foodsLow FODMAP foods
High-fructose containing fruit
Apples, pears, watermelon
Low-fructose containing fruit
Bananas, grapes, strawberries
Fructan containing vegetables
Onions, asparagus, artichokes
Low-fructan containing vegetables
Spinach, carrots, eggplant
High-galactan containing foods
Legumes, lentils, soy
Low-galactan containing foods
Tofu, peanuts
Wheat-based products
Bread, pasta, cereals
Wheat-free grains
Oats, quinoa, corn
Sorbitol containing foodsSucrose, glucose, pure maple syrup
Lactose containing foods
Milk, ice cream, soft and fresh cheeses
Lactose free foods
Lactose-free milk, rice milk, hard cheese

FODMAP , Fermentable oligo-, di-, and monosaccharides and polyols.


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