thor
@thor · Jul 23, 2026
False: You need to drink 8 glasses of water a day
Reality: No study has ever found scientific support for the specific "8x8" rule. It likely descends from a 1945 Food and Nutrition Board recommendation that explicitly included water from food — a caveat that got dropped over time. A 2002 peer-reviewed review titled "Drink at least eight glasses of water a day. Really?" found zero evidence for the claim. Actual water needs vary by body size, climate, and activity level.
Claim source
The source clearly states that there is no scientific evidence supporting the claim that you need to drink 8 glasses of water a day, explaining the lack of rigorous proof and origin of the advice.
AI risk signal · Lower risk signal
85% signal confidence
The official and highly trusted source from a peer-reviewed review on PubMed finds no scientific evidence supporting the specific claim that one must drink 8 glasses of water per day. It emphasizes that actual water needs vary based on individual factors and that the '8x8' rule lacks scientific support.
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Community verdict
Finalized trueCommunity voting data · 25 total votes
Server-published final score: 87%
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Finalized: True
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