Just when we had a handle on the current FODMAPs, a new discovery has emerged from Monash University in Australia: Perseitol, categorized as a polyol. Recognizing polyols can be simplified by identifying names ending in “-ol,” much like mannitol and sorbitol, the other polyol subcategories.

2024 brought positive news that avocado was assigned a new low FODMAP. The updated low FODMAP, or green, serve now stands at ¼ medium avocado, up from the previous 1/8 medium avocado. However, during reassessment, researchers unearthed a previously unnoticed carbohydrate: perseitol, distinguished by its larger molecular structure compared to sorbitol. Notably, unlike most fruits that undergo a carbohydrate increase as they ripen, avocados experience a rise in oils/fats and a decline in the carbohydrate perseitol during ripening.

For those who have used avocado in sorbitol challenges, consider retesting using another suitable food such as peach, turnip, or blackberries, as these foods only contain sorbitol. I have changed my challenge phase handout to reflect this new discovery and perseitol is it’s own category.

Given the considerable variance in avocado size and pit shape, estimating suitable portion sizes for different FODMAP serves can be challenging. To clarify green, yellow, and red serve portions, clients can initially weigh portions to familiarize themselves with varying quantities. Eventually, estimating portions via “eyeballing” becomes more manageable. Referencing the Monash app provides specific serving size information, but in Australian measurements. Below is a chart to illustrate the difference in Australian tablespoon measurements provided vs the US equivalants:

It’s worth noting that Australian tablespoons are approximately 20ml, while US tablespoons are roughly 15ml. Though the difference is modest, it’s helpful to acknowledge. When utilizing the Monash app for serve information, US users can multiply the specified amount by a factor of 1.35 to determine the US equivalent for tablespoons or use this app for help. However, teaspoon and cup conversions have minimal disparity and do not require adjustments.

To keep up with the latest recommendations and navigate through potentially confusing information, reach out to set an appointment or current clients can conveniently schedule via Healthie.

Sources:
https://www.monashfodmap.com/blog/avocado-and-fodmaps-a-smashing-new-discovery/https://www.asknumbers.com/australian-tablespoons-to-us-tablespoons.aspx