IL6 and Cognitive impairment: For interleukin-6 (IL-6), no significant relationship was observed between its concentration and the risk of cognitive impairments in any model (Model 1, OR = 1.000, 95% CI = 0.996–1.004, p = 0.931; Model 2, OR = 1.002, 95% CI = 0.997–1.008, p = 0.370).