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oats
Grains
Trigger checker for oats
See oats rated across every trigger — FODMAP, histamine, salicylate, oxalate, tyramine and more — plus diet compatibility, all in one quick ingredient profile.
Related checkers
Compare oats across criteria
Sensitivities
What oats contains
FODMAPs
Histamine & Amines
Plant compounds
Irritants
Additives
Allergens
Diet fit
Where oats fits
Therapeutic diets
Lifestyle diets
Religious diets
What to know about oats
Oats are naturally gluten free, yet they carry two triggers people miss. First, cross-contact: most oats are grown and milled alongside wheat, so unless the box says gluten free they usually pick up gluten, and a minority of people also react to avenin, oat's own protein. Second, oats are high in nickel, which matters if you have systemic nickel allergy.
Watch for
- Naturally gluten free, but routinely cross-contaminated with wheat unless labelled gluten free (the grade C reflects this, not the grain itself)
- A small share of coeliacs also react to avenin, oat's own protein, even with certified gluten-free oats
- High in nickel (grade D), a common trigger for systemic nickel allergy and dyshidrotic eczema
- Rated poorly for SIBO, where the fermentable beta-glucan fibre can add to bloating
Explore related in Grains
Compare similar foods to build a personalized list of swaps that work for your system.
FAQ
What does the FODMAP rating mean for oats?
Medium FODMAP: portion size matters more than the ingredient itself.
Is oats generally well tolerated?
Lectin (Avoid) and Low Fermentation (Avoid) Start with those if you react.
What should I check next?
Compare within the Grains group.