Background/Objectives: Metabolic syndrome (MS) is a constellation of several cardiometabolic risk factors. We investigated sex disparity in the associations between MS and cognitive impairment using cross-sectional data from Taiwan Biobank.
Methods: We determined the associations of MS and its five components with cognitive impairment (mini-mental state examination, MMSE < 24) and the five domains of MMSE using logistic regression analyses.
Results: A total of 7399 men and 11,546 women were included, and MS was significantly associated with cognitive impairment only in women (adjusted OR 1.48, 95% CI 1.29–1.71,
p = 0.001) (p for interaction 0.005). In women, the association with MS was significant in orientation (adjusted OR 1.21, 95% CI 1.07–1.37,
p = 0.003), memory (adjusted OR 1.12, 95% CI 1.01–1.25,
p = 0.034) and design copying (adjusted OR 1.41, 95% CI 1.23–1.62,
p = 0.001) (
p value for interaction 0.039, 0.023, and 0.093, respectively). Among the components of MS, a large waist circumference (adjusted OR 1.25, 95% CI 1.08–1.46,
p = 0.003), high fasting glucose (adjusted OR 1.16, 95% CI 1.00–1.34,
p = 0.046), and low HDL cholesterol (adjusted OR 1.16, 95% CI 1.00–1.34,
p = 0.049) were significantly associated with cognitive impairment in women.
Conclusions: Our findings suggest that sex has a significant influence on the association between MS and cognitive dysfunction, especially in orientation and memory.
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