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the claim

Drinking eight glasses of water a day is necessary to maintain health.

the verdict
REFUTED
the evidence says no
Recorded sources
1 source for · 4 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 eight glasses of water a day is necessary to maintain health?

No. Multiple reference and peer-reviewed sources state the advice to drink eight glasses of water daily lacks scientific support, with thirst described as a better guide; one recipe book repeats the advice without evidence.

Verdict: REFUTED · 1 source for, 4 against · Last checked

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

Evidence for · 1
Infused Water: 75 Simple and Delicious Recipes to Keep You and Your Family Healthy and Happy
2017
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Infused Water: 75 Simple and Delicious Recipes to Keep You and Your Family Healthy and Happy. (2017). ebookcentral.proquest.com. https://ebookcentral.proquest.com/lib/kxp/detail.action?docID=5669951

Evidence against · 4
Drinking water
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Drinking water. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Drinking_water

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More against · 3
Drinking
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Drinking. (n.d.). en.wikipedia.org. https://en.wikipedia.org/wiki/Drinking

“Drink at least eight glasses of water a day.” Really? Is there scientific evidence for “8 × 8”?
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“Drink at least eight glasses of water a day.” Really? Is there scientific evidence for “8 × 8”?. (n.d.). cir.nii.ac.jp. https://doi.org/10.1152/ajpregu.00365.2002

2 recorded entries grouped as this source

Additional records of the same source are shown below. They are not counted as additional sources.

"Drink at least eight glasses of water a day." Really? Is there scientific evidence for "8 x 8"?
2002
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H, V. (2002). "Drink at least eight glasses of water a day." Really? Is there scientific evidence for "8 x 8"?. doi.org. https://doi.org/10.1152/ajpregu.00365.2002

Do people need to drink 8 glasses of water a day?
2011
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Do people need to drink 8 glasses of water a day?. (2011). skeptics.stackexchange.com. https://skeptics.stackexchange.com/questions/2308/do-people-need-to-drink-8-glasses-of-water-a-day

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