Cognitive performance in relation to hydration status and water intake among older adults, NHANES 2011-2014.

ABSTRACT:

Purpose

Risks of dehydration and cognitive decline increase with advancing age, yet the relation between dehydration, water intake, and cognitive performance among older adults remains understudied.

Methods

Using data from the 2011-2014 cycles of the Nutrition and Health Examination Survey (NHANES), we tested if calculated serum osmolarity (Sosm) and adequate intake (AI) of water among women (n = 1271) and men (n = 1235) ≥ 60 years old were associated with scores of immediate and delayed recall, verbal fluency, and attention/processing speed. Sosm was categorized as < 285 (hyperhydrated), 285-289, 290-294, 295-300, or > 300 (dehydrated) mmol/L. AI of water was defined as ≥ 2 L/day for women and ≥ 2.5 L/day for men.

Results

Women with Sosm between 285 and 289 mmol/L sc

SUBMITTER: Bethancourt HJ 

PROVIDER: S-EPMC8841102 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature