Estrogen therapy linked to lower dementia risk in new studies

New research suggests a significant link between estrogen levels and brain health in women. A study led by Stanford Medicine involving over 21,000 participants found that estrogen-only hormone therapy in later life is associated with a lower risk of dementia. Specifically, researchers observed a 39 percent lower probability of a dementia diagnosis and a 35 percent lower likelihood of specific Alzheimer’s-related brain changes among users compared to non-users.

Complementary research from the University of Delaware utilized magnetic resonance elastography (MRE) to demonstrate that estrogen fluctuations influence the brain by reshaping connections between neurons. The study focused on the hippocampus, a region critical for memory and learning, noting that the brain adapts to different regions across the reproductive cycle based on hormonal levels.

While these findings are promising for understanding neurodegenerative disease prevention, researchers emphasize that the results should not immediately alter current hormone therapy practices. Further studies are required to determine how these mechanical brain changes directly influence cognitive functions like memory and learning.