Intended for healthcare professionals


Sixty seconds on . . . hydration

BMJ 2022; 379 doi: (Published 25 November 2022) Cite this as: BMJ 2022;379:o2869
  1. Jacqui Wise
  1. Kent

I know this one—eight glasses of water a day, right?

Not exactly. New research in Science shows the recommended intake of two litres, or eight glasses of water, a day is too high for most people.1

Wat-er you talking about?

Scientists assessed the water intake of 5604 men and women aged between 8 days and 96 years old from 23 countries. The research involved people drinking a glass of water in which some of the hydrogen atoms were replaced by deuterium, a stable …

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