06/18/2026
This is one of the most important β and most misunderstood β topics in women's health right now. Let's look at what the research actually shows.
For years, hormone replacement therapy (HRT) and brain health was a confusing, contradictory area. Recent research has brought real clarity, centered on one concept: the timing window.
What recent meta-analyses have found:
πΉ Women who started HRT near the time of menopause showed an associated reduced risk of Alzheimer's in observational data
πΉ Women who started HRT at age 65 or older showed an associated INCREASED risk
πΉ The leading hypothesis: estrogen may be protective when the brain is still relatively healthy, but potentially harmful once early Alzheimer's changes are already present
This is sometimes called the 'critical window' hypothesis β and it's why the perimenopausal years are drawing so much research attention.
What I want you to take from this:
β This is a decision to make WITH a qualified physician β it is individual, nuanced, and depends on your full health picture
β HRT is not the only lever β hormone metabolism, gut health, metabolic health, and nutrition all powerfully shape brain aging
β Whatever you decide about HRT, the functional foundation matters enormously
Important note: I am a functional nutrition practitioner, not a prescriber. I help you optimize the foundation and work alongside your medical team. HRT decisions belong with your physician.
Save this β and bring it to your next doctor's conversation π
Save this β this nuance matters. Share it with a woman weighing this decision π