Abstract
BACKGROUND: The components of metabolic syndrome (MetS) have previously been demonstrated to be contributors to cognitive decline in older adults as individual factors, but not collectively as a syndrome. This study investigated whether adults ≥ 50 years old who meet the criteria for MetS were more likely to develop impaired cognition than those without MetS. METHODS: Adults aged 50 years or older without significant cognitive impairment who received outpatient care at Taipei Veterans General Hospital were recruited. Waist circumference, blood tests for Mets components, and high-sensitivity C-reactive protein (hsCRP) were measured. Demographics, health condition, cognitive function (by Montreal Cognitive Assessment Taiwanese version, MoCA-T, and AD-8), depression symptoms (by Geriatric Depression Scale-15) and functional status (by Barthel's Index, and Lawton & Brody instrumental activities of daily living, IADL) were evaluated. Associations between MetS and cognitive function were analyzed by multivariate logistic regression. RESULTS: Data of 567 participants were analyzed. The prevalence of MetS of the study population was 34.2%. MetS status was not significantly correlated to cognitive decline as indicated by Montreal Cognitive Assessment Taiwan version (p = 0.13) and AD-8 (p = 0.42). Mild abdominal obesity decreased the risk of developing impaired cognition in women (adjusted OR = 0.62, 95% CI = 0.42, 0.93, p = 0.02) but not in men (adjusted OR = 0.84, 95% CI = 0.46, 1.53, p = 0.58). CONCLUSIONS: MetS is not a significant contributory factor to cognitive decline in community-dwelling middle-aged and older adults. An optimal waist circumference in community-dwelling older women is protective against the development of mild dementia.