What is the cell hydration status of healthy children in the USA? Preliminary data on urine osmolality and water intake

Bibliographic Data

ID15091899
AuthorsJodi Stookey (0000-0001-9604-2392, Children’s Institute, corresponding author), Jodi D Stookey, Bernie Brass (Martin Luther King, Jr. Multi-Service Ambulatory Care Center), Ava Holliday (Martin Luther King, Jr. Multi-Service Ambulatory Care Center), Allen Arieff, Allen I Arieff (University of California, San Francisco)
Year2012
Volume15
Issue11
Pages2148-2156
Publication date2012-11-01
Open AccessYes
TypeARTICLE
VenuePublic Health Nutrition (JOURNAL)
Journal identifiersISSN: 1368-9800 • E-ISSN: 1475-2727
PublisherCambridge University Press (CUP) (PUBLISHER)
DOI10.1017/s1368980011003648
PMID22281298
OpenAlexW2113620931
LanguageEN
Citations received16
References cited59

Objective Hyperosmotic stress on cells limits many aspects of cell function, metabolism and health. International data suggest that schoolchildren may be at risk of hyperosmotic stress on cells because of suboptimal water intake. The present study explored the cell hydration status of two samples of children in the USA. Design Cross-sectional study describing the urine osmolality (an index of hyperosmotic cell shrinkage) and water intake of convenience samples from Los Angeles (LA) and New York City (NYC). Setting Each participant collected a urine sample at an outpatient clinic on the way to school on a weekday morning in spring 2009. Each was instructed to wake, eat, drink and do as usual before school, and complete a dietary record form describing the type and amounts of all foods and beverages consumed after waking, before giving the sample. Subjects The children (9–11 years) in LA ( n 337) and NYC ( n 211) considered themselves healthy enough to go to school on the day they gave the urine sample. Results Elevated urine osmolality (>800 mmol/kg) was observed in 63 % and 66 % of participants in LA and NYC, respectively. In multivariable-adjusted logistic regression models, elevated urine osmolality was associated with not reporting intake of drinking water in the morning (LA: OR = 2·1, 95 % CI 1·2, 3·5; NYC: OR = 1·8, 95 % CI 1·0, 3·5). Although over 90 % of both samples had breakfast before giving the urine sample, 75 % did not drink water. Conclusions Research is warranted to confirm these results and pursue their potential health implications

Environmental health · Logistic regression · Morning · Osmotic concentration · Urine · Urine osmolality · Urine sample · Demography · Diet and metabolism studies · Dietary Effects on Health · Medicine · Thermoregulation and physiological responses · Internal Medicine

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