Brain HealthMenopause Rewires Blood Proteins Tied to Brain Aging and Dementia Risk
Researchers analyzed blood proteins in nearly 15,000 women across multiple cohorts to map the biological changes triggered by menopause and their connection to brain health. In rigorously staged pre-, peri-, and postmenopausal women, spontaneous menopause was associated with disruptions in inflammatory, synaptic, metabolic, and Alzheimer's disease-related proteins — changes driven more by hormonal shifts than by age alone. A larger validation group confirmed these proteomic signatures and revealed accelerated organ and brain aging markers. Most strikingly, when these menopause protein scores were applied to four independent cohorts of older women, higher scores consistently predicted worse cognitive aging and greater dementia risk. The findings suggest that the hormonal transition of menopause leaves a measurable molecular fingerprint in the blood that may serve as an early warning system for future brain decline.
