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Hydration and cognitive function in children

Kristen E D'Anci1, Florence Constant, Irwin H Rosenberg

  • 1Nutrition & Neurocognition Laboratory, Jean Mayer USDA Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts 02111, USA.

Nutrition Reviews
|October 27, 2006
PubMed

Insights

Maintaining adequate fluid intake is vital for children, who are more susceptible to dehydration than adults. Even mild dehydration can negatively impact a child

Area of Science:

  • Pediatrics
  • Human Physiology
  • Child Development

Background:

  • Adequate fluid intake is essential for survival.
  • Children and infants rely on caregivers for hydration.
  • Children face a higher risk of dehydration compared to adults due to physiological differences.

Purpose of the Study:

  • To highlight the critical importance of fluid intake in pediatric populations.
  • To underscore the increased vulnerability of children to dehydration.
  • To discuss the physiological factors contributing to dehydration risk in children.

Main Methods:

  • Review of existing research on fluid balance in pediatric populations.
  • Comparison of physiological differences between children and adults regarding hydration.
  • Analysis of the impact of dehydration on cognitive function in young individuals.

Main Results:

  • Children have a higher surface-to-mass ratio, increasing dehydration risk.
  • Pediatric thirst sensitivity and thermoregulation differ from adults.
  • Even mild dehydration (1-2% body weight loss) can impair cognitive function in young adults and children.

Conclusions:

  • Children are at significant risk for dehydration due to unique physiological characteristics.
  • Dehydration in infants can manifest as confusion, irritability, and lethargy.
  • Cognitive performance in children can be detrimentally affected by dehydration.

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