Skip Navigation LinksHome > April 2014 - Volume 32 - Issue 4 > “Drink at Least 8 Glasses of Water a Day to Be Healthy???”
Home Healthcare Nurse:
doi: 10.1097/NHH.0000000000000050
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“Drink at Least 8 Glasses of Water a Day to Be Healthy???”

Clark, William F. MD, FRCPC, FACP, FASN, FCAHS; Susan Huang, Shih-Han MD, FRCPC; Garg, Amit X. MD, FRCPC, FACP, PhD; House, Andrew MD, MSc, FRCPC, FASN; Moist, Louise M. MSc, MD, FRCPC; Weir, Matthew MD, MSc, FRCPC; Sontrop, Jessica M. PhD

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Abstract

The saying “drink at least 8 glasses of water per day to be healthy” has had little supporting evidence. The purpose of this article was to briefly introduce the role of hydration in health in order to explore in more detail recent observational studies of hyperhydration in chronic kidney disease (CKD) in man. The Modification of Diet in Renal Disease study initially noted a negative association between increasing urine output and progression of CKD that was absent when corrected for baseline variables. Recently, data from 2 different cross-sectional populations found those with the highest fluid intake had a significantly lower risk of CKD. In a longitudinal, community-based cohort study adjusted for baseline variables, decline in kidney function was significantly slower in those with higher versus lower baseline urine volume. These new and contradictory results underline the need for a randomized controlled study to test the hypothesis that increased fluid intake will slow renal decline. Nutr Today. 2013;48(4S):S18–S21

© 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins.

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