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the claim

Cooking tomatoes in copper cookware poses health and toxicity risks

the verdict
SUPPORTED
the evidence backs this
Recorded sources
2 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that cooking tomatoes in copper cookware poses health and toxicity risks?

Yes. Cooking acidic foods like tomatoes in copper cookware poses health and toxicity risks due to the accelerated leaching of copper into the food under low-pH conditions.

Verdict: SUPPORTED · 2 sources for, 0 against · Last checked

The analysis

The claim is specific and testable. Paper [7] directly demonstrates that acidic environments (such as citric or malic acid, which mimic the acidity of foods like tomatoes) drastically increase the rate at which copper ions leach from unlined or commercial copperware. Paper [5] notes that copper cookware contains heavy metal contaminants and that acidic foods promote metal leaching into food. Therefore, the claim is supported by direct experimental evidence on pH-dependent copper release.

Evidence for · 2
Assessing Leaching of Potentially Hazardous Elements from Cookware during Cooking: A Serious Public Health Concern.
2023
Identifies copper cookware as containing toxic metal contaminants that can leach into food during use.
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SA, A. S., F, A. K., A, W., B, F., H, K., A, B., SZ, S., C, S., A, A., SY, A., & M, I. (2023). Assessing Leaching of Potentially Hazardous Elements from Cookware during Cooking: A Serious Public Health Concern.. doi.org. https://doi.org/10.3390/toxics11070640

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More for · 1
Temperature and pH affect copper release kinetics from copper metal foil and commercial copperware to food simulants.
2020
Demonstrates that acidic conditions (such as those found in tomatoes) significantly accelerate copper release kinetics from copperware.
Get citation
JL, K., GL, L., & BW, R. (2020). Temperature and pH affect copper release kinetics from copper metal foil and commercial copperware to food simulants.. doi.org. https://doi.org/10.1080/19440049.2019.1704447

Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8204 Aug 2026
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