Association of Sugar Restriction in Utero Through Age 2 Years on Dementia Risk Later in Life.

Among 64,737 participants included in the analysis, the mean age at recruitment was 54.6 years, and 56.4% were women; 40,963 were exposed to sugar rationing during fetal and/or early-childhood life, and 23,774 were unexposed.

Early-life sugar rationing was also associated with higher total gray matter volume (β, 3.27; 95% CI 0.46-6.07), lower white matter hyperintensity volume (β, -0.64; 95% CI -0.97 to -0.31), and better performance in processing speed and reasoning.

Incident type 2 diabetes and hypertension jointly mediated 25.5% of the association.