Shifting Focus: From Hydration for Performance to Hydration for Health
1Danone Research, Hydration and Health Department, Palaiseau, France.
Annals of Nutrition & Metabolism
|June 15, 2017
Summary
Adequate hydration is shifting from performance to health. Research now links fluid intake to kidney and metabolic health, using biomarkers like vasopressin and urine output to assess optimal hydration levels.
Area of Science:
- Physiology
- Biochemistry
- Health Sciences
Background:
- Hydration research has evolved from assessing dehydration to understanding hydration's role in daily health.
- Differences in habitual fluid intake among healthy individuals reveal physiological variations.
- Emerging evidence links fluid intake to vasopressin (copeptin), glomerular filtration rate, and metabolic health markers.
Purpose of the Study:
- To review the association between hydration, water intake, and health outcomes, focusing on kidney and metabolic endpoints.
- To discuss the application of hydration biomarkers in assessing health-related hydration.
- To explore methods for determining adequate water intake for maintaining health.
Main Methods:
- Narrative review of existing literature on hydration biomarkers and health outcomes.
- Analysis of studies investigating physiological changes related to fluid intake variations.
- Examination of proposed targets for urinary hydration markers (osmolality, specific gravity, color).
Main Results:
- Fluid intake differences correlate with significant variations in vasopressin, GFR, and metabolic markers.
- Hydration for health is emerging as a key focus, moving beyond hydration for performance.
- Urinary output metrics (volume, concentration, osmolality, specific gravity, color) can indicate hydration status.
Conclusions:
- Adequate water intake is increasingly recognized for its role in maintaining kidney and metabolic health.
- Hydration biomarkers offer valuable tools for assessing health-related hydration status.
- Further research is needed to fully elucidate the complex relationships between water intake, hydration, vasopressin, and overall health outcomes.
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