Age at First Childbirth and Dementia Risk: A Cross‐Sectional Ecological Analysis of Female Prevalence, Sex Disparities, and Public Health Implications

Delayed age at first childbirth is significantly associated with higher female dementia prevalence and sex disparities, particularly in LMICs. These findings highlight the need for individual-level, longitudinal studies to explore potential causal pathways and to inform sex-sensitive public health strategies for dementia prevention across diverse global contexts.