Overview
- The University of Vermont study found that resting-state functional connectivity differs across premenopause, perimenopause, and postmenopause, indicating the brain’s baseline network architecture is reorganized during the transition.
- Researchers link those network changes to sharp swings and declines in estrogen, a hormone that helps regulate neural network stability and brain metabolism.
- The analysis used publicly available Human Connectome Project—Aging 2.0 MRI and demographic data from 151 women aged 40 to 55 and identified specific altered connections including between the supramarginal gyrus and the planum temporale.
- The paper was published June 9, 2026, and the authors note the cross-sectional design shows association not causation, so they have launched longitudinal and hormone‑therapy studies to test causal effects and whether HRT can modify brain aging.
- Because about 6,000 U.S. women enter menopause each day, the findings may help explain common midlife symptoms such as brain fog and could change clinical approaches to preserving cognitive health during and after the menopause transition.