ALLERGY RESOURCES

COMPREHENSIVE ALLERGY RESOURCES FOR EVERYONE - THE TOP 14 ALLERGENS AND BEYOND

COMPREHENSIVE ALLERGY RESOURCES FOR EVERYONE - THE TOP 14 ALLERGENS AND BEYOND
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BAY LEAF ALLERGY


Key Allergens

Bay leaves are harvested from the Laurus nobilis plant. These are in the Lauraceae family of plants which includes avocado and cinnamon.

No allergenic proteins have been identified in bay leaves, but it is usually associated with allergic contact dermatitis due to the high concentration of essential oils it contains. It contains eugenol, a chemical compound which can cause contact allergies - it is found in the oil of the leaves and is the component that adds flavour and fragrance.


Food Intolerances

Food is moderate in FODMAP Food is high in salicylates

A single bay leaf would be low FODMAP food, but two may be moderate. FODMAP stands for Fermentable oligosaccharides, disaccharides, monosaccharides and polyols. 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.

Bay leaves are high in salicylates. 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.

Associated Syndromes

Bay leaves are associated with allergic contact dermatitis, mostly affecting those who pick, grow and process the plant.

Bay leaf is also associated with phytodermatitis, which is where the chemical compounds on the leaf transfer to the skin and cause blistering when exposed to sunlight.


Cross Reactivity

Other plants which contain eugenol include allspice, cinnamon, basil, clove, turmeric, marjoram, mace, nutmeg, pepper, ginger, oregano and thyme.

These food lists are not exhaustive, the most up to date information is on the Cross Reactivity Tool.




Resources

Websites

DermNet NZ - Allergic contact dermatitis to essential oils

Allergen Encyclopedia - Bay Leaf

Science Direct - Bay Leaves

FODMAPedia - Bay Leaves

Low Salicylate Diets

DermNet NZ - Phytodermatitis

Science Direct - Sesquiterpene


Articles and Journals

Chemical Profiles and Antioxidant Activities of Essential Oil from Different Plant Parts of Bay Laurel (Laurus nobilis L.), 2024

Biological activities of Laurus nobilis leaves, 2023

Persistent contact dermatitis following use of laurel oil, 2022

Bay leaf phytodermatitis, 2021

Biological Properties and Prospects for the Application of Eugenol — A Review, 2021

Essential oil eugenol: sources, extraction techniques and nutraceutical perspectives, 2017

Systemic allergic dermatitis caused by sesquiterpene lactones, 2016

Contact allergy and medicinal herbs, 2007

Contact allergy to food, 2004

Occupational asthma caused by aromatic herbs, 1996



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, Instagram or Twitter - links at the bottom of the page.


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