05/25/2026
A study in The Lancet reviewed data from over one million women to answer one of the most-asked questions in menopause medicine: does hormone therapy protect against dementia?
The answer, based on the highest quality evidence available: we don't know yet.
That might sound anticlimactic — but it's actually important. It means the decision about whether to use MHT should be based on your symptoms, your history, and your values. Not on fear. Not on viral claims.
I wrote about what this study found, why it differs from others you may have seen, and what we actually do know about protecting your brain during menopause.
Social media is full of confident claims about hormones and brain health. Here's what the highest-quality research actually says, and why the honest answer matters more than a viral one.