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the claim
Drinking green tea causes dehydration.
the verdict
CONTESTED PARTIAL
Recorded sources
1 source for · 1 against
Is it true that drinking green tea causes dehydration?
Partly. One source notes green tea's caffeine has diuretic properties that remove water from the body, while a mouse study reports green tea promotes renal water reabsorption and mitigates diabetic polyuria. Neither settles whether drinking green tea causes dehydration in humans.
Verdict: CONTESTED PARTIAL · 1 source for, 1 against · Last checked
Evidence for · 1
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Can a healthy "water cycle" in the body prevent or delay dementia ?. (2022). doi.org. https://doi.org/10.13140/rg.2.2.29159.82082
Evidence against · 1
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Zhao, G., Yang, L., Ge, Y., Qiu, Z., Tang, D., Fang, Y., Ban, Q., Yang, C. S., & Zhang, J. (2025). Tea drinking effectively improves symptoms of diabetes and prevents hepatorenal damage in mice.. doi.org. https://doi.org/10.1016/j.foodres.2025.116502
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