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Hydration and obesity among outpatient-based population: H2Ob study
Juana Carretero-Gómez1, Jose Carlos Arévalo Lorido1, Ricardo Gómez Huelgas2
1Department of Internal Medicine, Zafra County Hospital, Badajoz, Spain.
Summary
Obese individuals may be hypohydrated. This study found obesity is linked to hydration status, with plasma osmolarity being a more accurate indicator. Further research is needed to confirm these findings.
Area of Science:
- Clinical Medicine
- Human Physiology
- Nutritional Science
Background:
- Obesity is a growing health concern.
- Evidence suggests a link between obesity and hypohydration.
- Reliable indicators for hydration status in obesity are lacking.
Purpose of the Study:
- To investigate the correlation between obesity and hydration status.
- To compare the effectiveness of different hydration indicators: plasma osmolarity, urinary specific gravity (USG), and urinary osmolarity.
- To analyze these associations in a hospital-based outpatient population.
Main Methods:
- Cross-sectional study of 260 patients (average age 56.5 years).
- Hydration status assessed using plasma osmolarity, urine osmolarity, and USG.
- Obesity measured using standard weight status categories and body mass index.
Main Results:
- A significant trend of increased urine osmolarity, USG, and plasma osmolarity was observed with higher weight status categories.
- Plasma osmolarity showed the most accurate relationship with body mass index categories.
- Multivariate analysis confirmed obesity is associated with plasma osmolarity, urine osmolarity, and USG.
Conclusions:
- Obesity is associated with altered hydration status.
- Plasma osmolarity appears to be a more accurate indicator of hydration status in obese individuals.
- These findings suggest potential clinical implications for managing obesity through hydration monitoring, requiring further investigation.
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