Hassen, Céline Ben; Machado-Fragua, Marcos D; Landré, Benjamin; Fayosse, Aurore; Dumurgier, Julien; Kivimaki, Mika; Sabia, Séverine; Hassen, Céline Ben; Machado-Fragua, Marcos D; Landré, Benjamin; Fayosse, Aurore; Dumurgier, Julien; Kivimaki, Mika; Sabia, Séverine; Singh-Manoux, Archana; - view fewer (2023) Change in lipids before onset of dementia, coronary heart disease, and mortality: A 28-year follow-up Whitehall II prospective cohort study. Alzheimer's & Dementia 10.1002/alz.13140. (In press).

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Abstract

INTRODUCTION: The association of lipids with dementia remains a subject of debate. Using data from 7,672 participants of the Whitehall II prospective cohort study, we examined whether timing of exposure, length of follow-up, or sex modifies this association. METHODS: Twelve markers of lipid levels were measured from fasting blood and eight among them a further five times. We performed time-to-event as well as trajectory analyses. RESULTS: No associations were observed in men; in women most lipids were associated with the risk of dementia, but only for events occurring after the first 20 years of follow-up. Differences in lipid trajectories in men emerged only in the years immediately before diagnosis whereas in women total cholesterol (TC), LDL-cholesterol (LDL-C), non-HDL-cholesterol (non-HDL-C), TC/HDL-C, and LDL-C/HDL-C were higher in midlife among dementia cases before declining progressively. DISCUSSION: Abnormal lipid levels in midlife seem to be associated with a higher risk of dementia in women.

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