The Relation of Hydration Status to Cognitive Performance in Healthy Older Adults

Int J Psychophysiol. 2004 Jul;53(2):121-5. doi: 10.1016/j.ijpsycho.2004.03.003.


Little is known about the relation of hydration status to cognitive performance in older adults, who may be more vulnerable to poor hydration and cognitive impairment. We examined whether hydration status was related to cognitive functioning in 28 healthy community-dwelling older adults. Hierarchical regression models demonstrated that lower hydration status was related to slowed psychomotor processing speed and poorer attention/memory performance, after controlling for demographic variables and blood pressure.

MeSH terms

  • Aged
  • Attention / physiology
  • Body Water / metabolism*
  • Cognition / physiology*
  • Electric Impedance
  • Humans
  • Memory / physiology
  • Mental Processes / physiology
  • Middle Aged
  • Psychomotor Performance / physiology
  • Time Factors