Avocado is in the Lauraceae
family of plants which also includes plants like cinnamon. This family of plants are not usually associated with food allergies.
The main allergen found in avocado is called Pers a 1, this is a chitinase
, which is a plant derived enzyme made by plants naturally to act as a defence against fungal attacks.
Avocado is not associated with oral allergy syndrome, but oral symptoms are linked with latex allergy
due to the chitinase.
Avocado can contain a moderate amount of sulphites
when processed into a dip or guacamole. This is a food intolerance which is more common in asthmatics. An improvement in symptoms can be made with a change to a low sulphite diet.
Avocado is a low FODMAP food. FODMAP
stands for F
olyols. Foods high in FODMAPs can cause symptoms of food intolerance, affecting the gastro intestinal system and this can be mistaken for a true IgE food allergy.
Avocado is a food high in salicylates
. Salicylates have the potential to cause worsening of asthma, swelling, itching and hives as well as food intolerance symptoms in people who are sensitive to salicylates.
You can read more about Food Intolerances
on the dedicated Food Intolerance Page.
Avocado allergy has been linked to Latex Food Syndrome
, which is caused by the body confusing the proteins it encounters in food to that of latex proteins to which it is already sensitised.
Avocado allergy has also been linked in recent years to FPIES - Food Protein Induced Enterocolitis Syndrome. This is a condition commonly linked with food sensitivity and intolerances in babies.
Those with a sensitivity to chitinase may have linked allergies to foods which contain high levels of chitinase, like banana, chestnuts, corn (maize), kiwi, papaya, pomegranate and tomatoes.
These foods lists are not exhaustive, the most up to date information is on the Cross Reactivity Tool.
DermNet NZ - Latex Allergy
Allergen Encyclopedia - Avocado
Allergy information for: Avocado (Persea americana)
NY Allergy & Sinus Centers - Avocado
Healthline - Dealing with an Avocado Allergy
FODMAPedia - Avocado
ATP Science - Salicylate Foods
Articles and Journals
Food Protein Induced Enterocolitis Syndrome: A Culprit Food Analysis, 2023
Avocado allergy. Identification of a new allergen, 2023
Prevalence and Patterns of Latex Glove Allergy among Healthcare Workers in a Tertiary Care Center In South India - A Cross-Sectional Study, 2022
Avocado allergy. Identification of a new allergen, 2022
Non-IgE-mediated food allergy: Evaluation and management, 2021
Are Dietary Lectins Relevant Allergens in Plant Food Allergy? 2020
Three cases of delayed onset repetitive emesis after avocado ingestion, 2018
Clinical characterization of Chilean patients with IgE-mediated food allergy, 2018
Class I endochitinase containing a hevein domain is the causative allergen in latex-associated avocado allergy, 1999
Class I chitinases as potential panallergens involved in the latex-fruit syndrome, 1999
Cross-reacting allergens in natural rubber latex and avocado, 1995
Latex allergy: clinical features and cross-reactivity with fruits, 1994
Let me know if you found any of these interesting or useful.
If you spot an article or research that you think is interesting you can message me or tag me on Facebook or Twitter - links at the bottom of the page.