Serum Vitamin D₃ Concentration, Sleep, and Cognitive Impairment among Older Adults in China.

ABSTRACT:

Background

Cognitive decline in older adults has become one of the critical challenges to global health. This study aims to examine both cross-sectional and longitudinal associations of levels of serum 25-hydroxyvitamin D₃ (25(OH)D₃) (briefed as VD3) concentration and sleep quality/duration, especially their interactions, with risk of cognitive impairment among older adults in China.

Methods

We utilized a special subsample of adults aged 65-105 years (individuals = 3412, observations = 4816) from eight provinces in China derived from the 2011/2012 and 2014 waves of the Chinese Longitudinal Healthy Longevity Survey. Cognitive impairment was measured by the Mini-Mental State Examination scale. Sleep quality was classified as good versus fair/poor, and sle

SUBMITTER: Xie Y 

PROVIDER: S-EPMC10574235 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature