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the claim

Drinking coffee causes dehydration in regular coffee drinkers.

the verdict
REFUTED
the evidence says no
Recorded sources
0 sources for · 5 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 drinking coffee causes dehydration in regular coffee drinkers?

No. Multiple sources, including a controlled crossover study in regular coffee drinkers and a Cleveland Clinic explainer, indicate that coffee does not cause dehydration in habitual drinkers; tolerance to caffeine's diuretic effect develops.

Verdict: REFUTED · 0 sources for, 5 against · Last checked

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

Evidence against · 5
Does drinking coffee or tea dehydrate you?
2015
Get citation
Does drinking coffee or tea dehydrate you?. (2015). skeptics.stackexchange.com. https://skeptics.stackexchange.com/questions/28765/does-drinking-coffee-or-tea-dehydrate-you

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More against · 4
Does drinking coffee interfere with magnesium absorption?
2019
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Does drinking coffee interfere with magnesium absorption?. (2019). skeptics.stackexchange.com. https://skeptics.stackexchange.com/questions/43128/does-drinking-coffee-interfere-with-magnesium-absorption

Coffee consumption and health: umbrella review of meta-analyses of multiple health outcomes.
2017
Get citation
Poole, R., Kennedy, O. J., Roderick, P., Fallowfield, J. A., Hayes, P. C., & Parkes, J. (2017). Coffee consumption and health: umbrella review of meta-analyses of multiple health outcomes.. doi.org. https://doi.org/10.1136/bmj.j5024

Does Coffee Really Dehydrate You?
Get citation
Does Coffee Really Dehydrate You?. (n.d.). health.clevelandclinic.org. https://health.clevelandclinic.org/coffee-dehydration

No Evidence of Dehydration with Moderate Daily Coffee Intake: A Counterbalanced Cross-Over Study in a Free-Living Population
2014
Get citation
Killer, S. C., Blannin, A. K., & Jeukendrup, A. E. (2014). No Evidence of Dehydration with Moderate Daily Coffee Intake: A Counterbalanced Cross-Over Study in a Free-Living Population. doi.org. https://doi.org/10.1371/journal.pone.0084154

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