Researchers from Université Paris Orient found that pre-eclampsia correlates with an increased risk of developing early dementia in women. The results of the study are published in JAMA Network Open. Preeclampsia is a complication of pregnancy, labor and delivery and the postpartum period that usually does not develop until the 20th week of pregnancy in the form of a sudden increase in blood pressure combined with proteinuria (the presence of protein in the urine). In the study, the researchers sought to find out how such pathology affects women's long-term brain health and cognitive abilities. To do this, they invited 1,966,323 volunteers to participate. Scientists collected information about the health of the subjects and analyzed the peculiarities of the course of their pregnancy and childbirth. It is noted that on average, after collecting information, the participants were observed for nine years. It turned out that, compared to persons without hypertensive disorders of pregnancy, women with preeclampsia had an increased risk of developing dementia at a young age. When pre-eclampsia occurred before 34 weeks of gestation or superimposed on chronic hypertension, the odds were even higher. However, severe preeclampsia did not correlate with a high risk of early dementia.