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European Journal of Nutrition

, Volume 58, Issue 2, pp 475–496 | Cite as

Water intake and hydration state in children

  • HyunGyu Suh
  • Stavros A. KavourasEmail author
Review

Abstract

Purpose

Although low water intake has been associated with adverse health outcomes, available literature indicated that the majority of children do not meet the water intake guidelines and they are underhydrated based on elevated hydration biomarkers. This review examined the water intake habits and hydration status in children from 32 observational studies (n = 36813).

Methods

PubMed, Web of Science, and CINAHL were used to identify relevant articles. Total water/fluid intake from 25 countries was compared with water intake recommendations and underhydration (urine osmolality greater than 800 mmol kg−1) was assessed. Risk of bias was assessed using customized categories following the review guideline for observational studies.

Results

From 32 studies, only 11 studies reported both water intake and hydration status. 12 out of 24 studies reported mean/median water/fluid intake below the guidelines, while 4 out of 13 studies that assessed hydration status indicated underhydration based on urine osmolality (greater than 800 mmol kg−1). Among the 19 countries that reported comparison of water/fluid intake with guidelines, 60 ± 24% of children (range 10–98%) failed to meet them.

Conclusion

These findings suggest that children are not consuming enough water to be adequately hydrated.

Keywords

Dehydration Hypohydration Hydration assessment Inadequate hydration Underhydration Fluid intake 

Notes

Acknowledgements

The authors wish to thank Abigail Colburn and LynnDee Summers for their editorial support.

Author contributions

HS, the lead author, helped developing the search question, conducted the analysis, and wrote the manuscript. SAK helped in developing the search question, provided input on the analytic strategy, reviewed and edited the manuscript. All authors read and approved the manuscript.

Funding

The authors have not received any funding for this review.

Compliance with ethical standards

Conflict of interest

SAK has served as scientific consultants for Quest Diagnostics, Standard Process and Danone Research. SAK has active Grants with Danone Research. HS has no conflicts to declare.

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© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Hydration Science LabArizona State UniversityPhoenixUSA

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