showed a trendP = .06
Carotenoids were not significantly related to risk of dementia or AD, except for plasma trans‐β‐carotene, which showed a trend to be related to a higher risk of dementia (hazard ratio [HR] per standard deviation [SD]: 1.09; 95% confidence interval [CI]: 1.00, 1.20; P = .06) and α‐carotene, which also trended toward a higher AD risk alone (HR per SD: 1.15; 95% CI: 1.02, 1.29; P = .02).