Funded in part by Danone Research
Urine colour change as an indicator of change in daily water intake: a quantitative analysis
Perrier ET, Johnson EC, McKenzie AL, Ellis LA, Armstrong LE
European journal of nutrition · 13 citations
Review labels
Neutral facts our review recorded about how this study was done. They describe method, never whether we like the result.
How it was studied
- Design
- Meta-analysis (classified by our AI screen)
- Studied in
- People
- Main outcome
- No health outcome
Who paid for it
- Funding
- Industry funded
- Company
- Danone Research
- Authors
- At least one author declares a financial tie to industry
Based on 1 listed funder(s) and full-text disclosure statement.
Publication
- Published
- 2015-08-18 · Eur J Nutr · vol. 55 · issue 5 · pp. 1943–1949
- Publisher
- Springer Science+Business Media
- Cited
- 28 citations · more than 76% of similar papers · 1.1× the field average
- References
- 27 works
- Access
- Open access (hybrid journal) · CC-BY
- Research areas
- Thermoregulation and physiological responses · Sodium Intake and Health · Body Composition Measurement Techniques
- Keywords
- Urine, Urine specific gravity, Medicine, Internal medicine
- MeSH
- humans, dehydration, urinalysis, retrospective studies, life style, water-electrolyte balance, drinking, specific gravity, color, adult, female, male, evaluation studies as topic, young adult, drinking water
5 authors
From FR, US
- Erica T. Perrier · correspondingDanone (France)
- Evan C. JohnsonUniversity of Connecticut
- Amy L. McKenzieUniversity of Connecticut
- Lindsay A. EllisUniversity of Connecticut
- Lawrence E. ArmstrongUniversity of Connecticut
Abstract
Purpose
Urine colour (U Col) is simple to measure, differs between low-volume and high-volume drinkers, and is responsive to changes in daily total fluid intake (TFI). However, to date, no study has quantified the relationship between a change in TFI and the resultant change in U Col. This analysis aimed to determine the change in TFI needed to adjust 24-h U Col by 2 shades on an 8-colour scale, and to evaluate whether starting U Col altered the relationship between the change in TFI and change in U Col.
Methods
We performed a pooled analysis on data from 238 healthy American and European adults (50 % male; age, 28 (sd 6) years; BMI 22.9 (sd 2.6) kg/m(2)), and evaluated the change in TFI, urine volume (U Vol), and specific gravity (U SG) associated with a change in U Col of 2 shades.
Results
The mean [95 % CI] change in TFI and U Vol associated with a decrease in U Col by 2 shades (lighter) was 1110 [914;1306] and 1011 [851;1172] mL/day, respectively, while increasing U Col by 2 shades (darker) required a reduction in TFI and U Vol of -1114 [-885;-1343] and -977 [-787;-1166] mL/day. The change in U Col was accompanied by changes in U SG (lighter urine: -.008 [-.007;-.010]; darker urine: +.008 [.006;.009]). Starting U Col did not significantly impact the TFI change required to modify U Col by 2 shades.
Conclusions
Our results suggest a quantifiable relationship between a change in daily TFI and the resultant change in U Col, providing individuals with a practical means for evaluating and adjusting hydration behaviours.
Abstract via Europe PMC. Copyright remains with the authors or publisher (CC BY).
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