Nutrition
Hydration Facts: How Much Water You Actually Need, and Where 'Eight Glasses' Came From
The eight-glasses rule traces to an unreferenced 1945 guess. Here is what evidence-based bodies recommend instead.
Apr 8, 2025
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2 stories for“eight glasses a day myth”
Health
Nobody Ever Found the Study Behind Eight Glasses of Water a Day, Because There Is Not One
A physiologist went looking for the origin of the rule in 2002 and came back empty. What the reference intakes actually say, why food and coffee count, how much the number varies between people, and when in a Gulf summer it genuinely matters.
Sep 6, 2026
