Dehydration predicts longitudinal decline in cognitive functioning and well-being among older adults.
Konstantinos Mantantzis, Johanna Drewelies, Sandra Duezel, Elisabeth Steinhagen‐Thiessen, Ilja Demuth, Gert G. Wagner, Ulman Lindenberger, Denis Gerstorf
Abstract
= 1,067) are associated with objective dehydration (osmolarity; 33% dehydrated). Our results revealed that higher dehydration was associated with steeper decline in cognitive functioning and well-being over time, and lower well-being among those with higher body mass index. These associations were independent of sociodemographic and physical health characteristics. Our findings highlight the importance of adequate hydration for preserved cognition and well-being across old age. We discuss potential mechanisms and consider practical implications arising from our results. (PsycInfo Database Record (c) 2020 APA, all rights reserved).