High-nickel foods: the complete list
Nickel isn't just a metal in jewellery - it's in food too, and for some people that matters.
Most people know nickel as the metal that turns earrings and watch-backs into an itchy problem. Fewer know that nickel is also a trace element in food - and that, for a subset of people with nickel allergy, dietary nickel can matter too.
If that's you, here's the complete list of high-nickel foods, and a plain explanation of why.
What nickel sensitivity to food is
Nickel allergy is one of the most common contact allergies - the rash you get from metal jewellery. In a subset of people who have it, eating foods relatively high in nickel can trigger not just skin flare-ups but systemic symptoms - gut, skin and other extracutaneous complaints. This is called systemic nickel allergy syndrome (SNAS).1
It's important to keep this in proportion: SNAS affects a specific group - people who already have a confirmed nickel contact allergy - not the general population. For them, a low-nickel diet is the recognised approach, and studies show symptom improvement when high-nickel foods are reduced.13
Nickel concentrates in plant foods - particularly legumes, nuts and seeds, whole grains, soy, and cocoa - because plants draw it up from soil. Meat, fish, dairy and refined grains are generally much lower.2
The high-nickel foods
Below is the full list of high-nickel foods - drawn directly from the Triggerbites ingredient database.
The pattern is consistent: legumes, nuts, seeds, whole grains, soy and cocoa sit at the top, alongside some shellfish and a handful of vegetables.
It's a load, and it's relevant to a specific group
For most people, the foods on this list - beans, nuts, oats - are exactly the foods nutrition advice recommends, and there's no reason to avoid them. High-nickel foods are only worth limiting if you have a confirmed nickel allergy and react systemically to dietary nickel. Even then, it's the total nickel load that matters, not any single food.3
Finding your pattern
If nickel is relevant to you, the things worth tracking are your total daily intake of high-nickel foods and how it lines up with skin and gut symptoms over the following day or two.
Where Triggerbites fits in
This list comes straight from the food data inside Triggerbites, which tags every ingredient for nickel alongside 20+ other compounds.
So when you log meals in plain language, Triggerbites extracts the ingredients, tags the nickel load, and shows your cumulative intake against your symptoms over time - a clear, documented picture to bring to a doctor.
Triggerbites Features
- Log like you're texting: plain language, not database searches
- Automatic ingredient breakdown: we parse your entries into the basic components so you don't have to
- Built-in chemical tagging: FODMAP, histamine, salicylates, oxalates ++ more compounds flagged automatically
- Multi-window pattern recognition: correlations across same-day, next-day, and multi-day windows
- Reports you can share: something to take to a doctor or dietitian
It takes seconds a day, and it makes a trace element you can't taste finally trackable.
For related pieces, see why your skin reacts to food and how to find your food triggers.
Live, love, log. 🧡
References
Article References and Citations
- U.S. National Library of Medicine (PMC): "Systemic nickel allergy syndrome" - https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4406458/
- WebMD: "High-Nickel Foods to Avoid" - https://www.webmd.com/diet/foods-high-in-nickel
- Nickel Institute: "Low Nickel Diet for Nickel-Allergic Individuals" - https://nickelinstitute.org/en/science/human-health-fact-sheets/fact-sheet-6-low-nickel-diet