Vascular Imbalance During Pregnancy Linked to Increased Risk of Subjective Memory Impairment in Postpartum Years

Study shows vascular imbalance during pregnancy is associated with a twofold increase in memory difficulties three to six years after childbirth.

By: AXL Media

Published: Apr 30, 2026, 5:35 AM EDT

Source: Information for this report was sourced from EurekAlert!

The Lingering Imprint of Gestational Vascular Health

The biological stress of a complicated pregnancy may extend far beyond the delivery room, potentially affecting a woman's cognitive health years later. A new study published in the American Journal of Obstetrics and Gynecology suggests that vascular imbalances occurring during gestation leave a lasting mark on memory function. Investigators from the Sant Pau Research Institute (IR Sant Pau) found that women who exhibited an altered sFlt-1/PlGF ratio during pregnancy reported a significantly higher frequency of memory failures in their daily lives. According to Dr. Pablo García-Manau, a researcher at IR Sant Pau, focusing on the three to six year postpartum period allows scientists to isolate the impact of vascular processes from the immediate chaos of newborn care, such as sleep deprivation and acute stress.

Identifying the Mechanistic Driver of Cognitive Change

While previous medical literature has established a connection between preeclampsia and long term cognitive decline, this research narrows the focus to the specific angiogenic markers that regulate blood vessel function. The study analyzed 266 women, finding that those with an angiogenic imbalance were twice as likely to experience memory difficulties compared to those with normal levels. Interestingly, while women with clinical preeclampsia initially showed more memory problems, the statistical significance of that link vanished once factors like educational level and hypertension were considered. In contrast, the angiogenic imbalance remained a robust predictor of memory issues, suggesting that the underlying vascular adaptation is the key culprit rather than the clinical diagnosis of preeclampsia itself.

The Biological Intersection of Placenta and Brain

The sFlt-1/PlGF ratio is a common clinical tool used to assess the risk of preeclampsia, but its implications appear to be much broader. An altered ratio indicates endothelial dysfunction, a state where the lining of the blood vessels fails to adapt properly to the demands of pregnancy. Researchers believe this persistent microcirculation impairment may extend to the brain, specifically affecting the hippocampus, a region critical for memory processing. This vascular vulnerability, which has already been documented in renal and cardiovascular systems, may compromise brain perfusion over time...