Women taking estrogen had fewer signs of Alzheimer’s in their brains
A study published in Neurology found an association between estrogen-only hormone therapy in older women and a lower risk of Alzheimer's disease markers. Researchers caution that these findings are observational and do not prove that hormone therapy prevents dementia.
Why it matters
Clarifying the relationship between hormone therapy and brain health is important for women's health and aging research.
A large study has found that women who used hormone therapy later in life had a lower risk of developing dementia. The findings were published August 12, 2026, in Neurology , the medical journal of the American Academy of Neurology .
Researchers emphasized that the results show an association and do not demonstrate that hormone therapy can prevent dementia.
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