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Can You Eat Too Much Tinned Tuna?

A 2025 Spanish study found 60 cans averaged 0.138 mg/kg of mercury, and FSANZ said most people can eat tuna daily without exceeding limits.

Summary by The Conversation
Nazar Rybak/Getty ImagesTinned tuna is a lunchbox staple for many people. It’s affordable, high in protein and doesn’t need cooking, making it a nutritious and convenient option for busy days. But if you’re eating tuna most days, you might have wondered whether it’s possible to have too much. Or perhaps you’ve watched your child happily eat a tuna sandwich every day for a week and wondered if that’s too much of a good thing. The concern usually …

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The Conversation broke the news in Boston, United States on Tuesday, August 25, 2026.
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