Understand why low-FODMAP should be temporary

What to Do

If following a low-FODMAP diet for IBS, treat it as a short-term diagnostic tool (2-6 weeks elimination), then systematically reintroduce FODMAP groups one at a time. Do not stay on the elimination phase long-term.

Why It Works

Low-FODMAP diets consistently reduce Bifidobacteria abundance, raising concerns about long-term gut health. The diet works by removing fermentable carbohydrates that trigger IBS symptoms, but these same carbohydrates are the primary fuel for beneficial bacteria. Reintroduction identifies your personal triggers while restoring prebiotic intake for tolerated foods.

Tips

• Developed at Monash University — the Monash FODMAP app is the gold-standard reference
• Research shows two distinct microbial subgroups respond differently to FODMAP restriction, suggesting personalization is key
• Work with a dietitian experienced in FODMAP reintroduction for best results
• The goal is the least restrictive diet that controls symptoms, not permanent avoidance