Bumping into a lot of “the science updated, get on HRT” lately, mostly downstream of the 2022 NAMS position statement and the 2024 update, plus the Manson commentary in JAMA reframing the WHI. Worth separating what actually changed from what got loud on social. What the documents actually say (I read the 2022 NAMS statement and the 2024 update, not the press release summaries): - The risk/benefit profile is more favorable for symptomatic women under 60 or within 10 years of menopause onset. That window language is not new, it was already in the 2017 statement. The 2022/2024 versions strengthened the wording, they did not invent the timing hypothesis.
- For women without contraindications, low-dose transdermal estradiol carries a different VTE and stroke signal than oral CEE, which is the formulation the original WHI arm used. This matters because a lot of the “WHI was wrong” takes are really “WHI tested a specific formulation in a specific age band.” That’s a more boring sentence and it doesn’t travel.
- Bone and vasomotor symptom benefits are real and well-characterized. Cognitive and cardiovascular primary prevention claims are not supported by the documents themselves, despite how they get cited in podcasts. What didn’t change: - The breast cancer signal for combined estrogen plus progestogen past ~5 years of use. The absolute risk numbers are small but they’re still there, and the 2024 update doesn’t wave them away.
- The recommendation against starting HRT in women over 60 or more than 10 years out for primary prevention purposes.
- The fact that nobody has a randomized trial powered to answer “does HRT prevent dementia,” which means anyone telling you it does is extrapolating. The pharmacokinetic part nobody mentions: transdermal estradiol absorption varies enormously between individuals, and the patch dose on the box is not the serum level you end up with. If you go on it and feel nothing, or feel too much, that’s frequently a dosing/route issue, not the drug “not working.” Worth asking your prescriber about a serum estradiol level a few weeks in if symptoms aren’t tracking the dose. So when friends say “the science changed, you should be on it,” what they usually mean is “the public messaging changed.” Those aren’t the same event. The underlying evidence base has accumulated incrementally for a decade. If you’re on the fence, the actual question isn’t pro-HRT vs anti-HRT, it’s: do you have symptoms severe enough that the documented benefits clear the documented risks for your specific risk profile, formulation, and timing window. That’s a conversation with a clinician who’ll quote you absolute risk numbers, not relative ones. Not a recommendation either way. Just, read the documents.