Scientists are rethinking what menopause does to the brain. Here’s what they discovered

Scientists are reconsidering the impact of menopause on the brain. A recent study published in Neurology has provided fresh insights into the role of estrogen in protecting cognitive health as women age. The research involved 352 women who were cognitively healthy at age 70, with scans taken five years later. Women with longer lifetime exposure to estrogen through oral birth control and menopausal hormone therapy exhibited fewer markers associated with Alzheimer's disease and healthier overall brain function.

The study highlights estrogen's neuroprotective effects, which include reducing inflammation, improving blood flow, and safeguarding white matter – the brain's connective tissue. While longer reproductive spans and earlier periods have historically been linked to reduced brain aging in women, the decline in estrogen levels as women age can weaken the hormonal protection.

The research underscores the potential benefits of exogenous estrogen from sources like birth control pills, hormonal patches, and topical creams. The FDA recently removed a black box warning on hormone-based drugs for menopause symptoms, shifting the conversation around estrogen's safety and benefits. This newfound appreciation for hormone replacement therapy could have significant implications for women's cognitive health during menopause and perimenopause, a period often marked by mood and physical symptoms.