Episode 7 – FODMAPs and IBS

Key Points

  • A low-FODMAP diet significantly helps improves IBS symptoms in 50-86% of cases.
  • More successful for diarrhea than constipation.
  • FODMAPs are short chain fermentable carbohydrates and polyols that can draw in water and gas into the intestines.
  • Gold standard approach is 2-6 weeks of strictly limiting FODMAP intake, followed by a 8-12 week systematic re-introduction phase, followed by a final phase of adjusting diet based on what foods do or do not cause symptoms in different amounts.
FODMAP Phases
  • The re-introduction phase is important. If doing FODMAPs, you really should re-introduce foods where possible. Staying low-FODMAP long-term can be detrimental.
  • Always look at other potential medical conditions before FODMAPs. Otherwise you might be delaying getting an accurate diagnosis, which could be detrimental.
  • The microbiota can change quickly. Even 2-4 weeks on the low-FODMAP diet can significantly reduce the diversity of the bacteria and reduce the number of “healthy” bacteria.
  • It is worth seeing a dietitian if you are choosing to do a low-FODMAP diet.

Relevant Links/Resources

Helpful blog posts:

Helpful App:

Studies Referenced: