Key takeaways
- Avocado is low FODMAP at a very small 30 g serving (about one-eighth of a fruit).
- A standard half-avocado (75 g) is high FODMAP — sorbitol is the main culprit.
- Guacamole made with large avocado portions, plus added garlic/onion, is almost always high FODMAP.
- Use a small sliced portion as a topping rather than eating avocado as a standalone.
Avocado has earned superfood status for its healthy fats, but its FODMAP content catches many IBS patients off guard. The fruit is rich in sorbitol — a polyol that is poorly absorbed in the small intestine and rapidly fermented in the colon.
FODMAP status at a glance
- —30 g (one-eighth of an avocado): low FODMAP
- —75 g (one-quarter): moderate FODMAP — sorbitol approaching threshold
- —125 g (one-half): high FODMAP — clearly symptomatic for most sensitive people
The sorbitol content in avocado is meaningful — even a quarter of a fruit can push some people over their personal threshold, especially if they have stacked other polyol sources in the same meal.
What about guacamole?
If you want guacamole, make it at home with 30 g of avocado per serving, lemon juice, tomato, and a pinch of cumin. Skip the garlic — use garlic-infused olive oil for the flavour without the fructans.
How to enjoy avocado safely
- —Slice a small wedge (30 g) onto salads or grain bowls
- —Use as a thin spread on low-FODMAP sourdough bread
- —Add to smoothies in a 30 g portion alongside other low-FODMAP ingredients
- —Weigh portions until you have a reliable visual sense — avocados vary hugely in size
References
- 1.
- 2.Halmos EP et al. — A diet low in FODMAPs reduces symptoms of IBS — Gastroenterology, 2014
