History of hypertensive disorders of pregnancy and risk of Alzheimer's disease and vascular dementia.

The incidence of dementia, and specifically, Alzheimer's disease, is higher in women than men, even in middle age, making it possible to rule out lifespan differences between men and women as a contributing factor. Thus, it is plausible that pregnancy experience, which is unique to women, may play a contributing role. In this review, we discuss the different hypertensive disorders of pregnancy (HDP), Alzheimer's and vascular dementia, clinical, epidemiological, and preclinical studies that link a history of HDP with dementia. We also present potential mechanisms linking HDP, Alzheimer's, and vascular dementia. Several key symptoms that are shared among the disorders are presented as potential underlying mechanisms that link the adverse pregnancy disorder with the long-term postpartum neurological changes. Further, we present limitations of the existing literature, gaps, and opportunities for further research.