FUT1 and Cognitive impairment: Cognitive impairment was strongly related to age (OR: 1.034, 95% CI: 1.001–1.068), high H-H (OR: 2.547, 95% CI: 1.162–5.583) and Fisher grades (OR: 3.359, 95% CI: 1.409–8.012), and Hp phenotype.