Overview
About Lettuce
Lettuce is a safe base green, clean across nearly every trigger: low histamine, low salicylate, gluten free, and importantly low in oxalate, unlike spinach, which is very high in oxalate.
That makes lettuce a reliable salad base when spinach and other leafy greens are off the table. Two small notes keep it honest: it carries a modest FODMAP load in very large volumes, and its nickel content is borderline rather than negligible.
Sensitivities
How Lettuce scores
Watch for
What trips people up
- Low oxalate, in clear contrast to spinach, which is high oxalate: swapping spinach for lettuce is a common move on a low-oxalate diet
- Moderate FODMAP only in large volumes, so a normal side salad is fine while a huge bowl can add up for a sensitive gut
- Nickel sits at a borderline level, worth noting if you have a strict systemic nickel allergy but not a concern for most people
Diet fit
Where it fits
Swap ideas
More alternatives
FAQ
Common questions about Lettuce
Is lettuce high in oxalate like spinach?
No. Lettuce is low in oxalate, whereas spinach is one of the highest-oxalate foods there is. If you are managing oxalate for kidney stones, lettuce is a safe salad base to use in place of spinach.
Is lettuce low FODMAP?
In normal salad portions, yes. Lettuce only adds a moderate FODMAP load at large volumes, so a regular serving is comfortable for most people on the low FODMAP diet.
Is lettuce ok for histamine intolerance?
Yes. Fresh lettuce is low in histamine and is not a histamine liberator, so it works as a base green on a low-histamine diet. Keep it fresh, since any leafy green degrades once it sits too long.
References
Read the background
Ratings reflect the Triggerbites ingredient database and may vary with portion size and preparation.