What are the risks of low FODMAP diet?

There are a number of risks of low FODMAP diet to watch for.

  • Professional support through physicians and dietitians is recommended before embarking on the diet. It is best for patients to seek medical advice instead of self-adopting as there can be a meaningful impact on nutrient intake.


  • Restriction stage of the low FODMAP diet can reduce the number of species of gut microbiota, including bifidobacteria and its beneficial effects. It is not recommended to go on a low FODMAP diet long term for this reason.


  • It is not effective for everyone. Even when followed correctly, and under the guidance of a medical professional, it is estimated that around 1 in 3 patients may not see improvements in symptoms such as abdominal bloating and discomfort.


  • The diet can be complex to adhere to, and requires diligent shopping and selection of relevant ingredients, and can turn expensive. Social interactions may suffer as well due to the food restrictions.


  • Fiber, iron and calcium levels could be negatively impacted by a low FODMAP diet during the restriction stage. Dietitians may recommend calcium fortified meals, meats or meat alternatives for iron and low FODMAP cereals, fruits or vegetables for fiber.


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