The woman asking about hormone therapy, often called HRT or MHT, at 44 because she’s sleeping poorly and experiencing hot flashes, is asking a fundamentally different question than the woman at 62 who's been on MHT for a decade and just wants to know if she should keep going. Same therapy. Very different conversation. And yet most of what we hear publicly treats any MHT conversation as one and the same. What do we get wrong with this approach?
🧠 The takeaway
Hormone therapy needs vary significantly across decades and life stages — what works at 47 isn't the right answer at 62.
Starting MHT earlier in the menopause transition, ideally before age 60, is associated with better cardiovascular and metabolic outcomes.
There is no evidence-based reason to stop MHT at an arbitrary age, but any continuation should be an individualized decision.
👉🏽 The biology behind these shifts goes deeper than symptoms. Join us at the Livelong Women's Health Summit for a dedicated session on how ovaries age and what it means for your long-term health. Use code TIFFANY for $50 off.
We're bringing one of the most trusted voices in women's hormonal health into the Livelong Women's Circle for a live conversation you won't want to miss, as a preview to the Summit.
Dr. Mary Claire Haver, OB-GYN and bestselling author of The New Menopause, will join us for a Studio Session to go deeper on what the hormonal transition years actually mean for your brain, metabolism, and long-term health.
👉 RSVP to attend (exclusive for our Circle community members)
Your 40s: Perimenopause is not one thing
Perimenopause can span nearly a decade, and the hormonal picture shifts considerably within it. In early perimenopause, women are still ovulating, albeit erratically, with estrogen spiking unpredictably while progesterone drops. This is why, says Dr. Gillian Goddard, endocrinologist and author of the forthcoming book The Hormone Loop, progesterone is often the first priority. "During these stages, a birth control pill or a progestin-eluting IUD plus an estrogen patch are often the best choices to minimize breakthrough bleeding and prevent unwanted pregnancy."
By late perimenopause and early post-menopause (typically the late 40s into the early 50s), periods become infrequent or stop altogether, and an estrogen patch plus oral progesterone becomes a common approach.
The key clinical factor at this stage, says Dr. Bronwyn Holmes, M.D., medical advisor at Eden Health, isn't lab values. Hormone levels can be misleadingly variable day-to-day, she notes. What matters more for considering MHT is whether symptoms like disrupted sleep, mood instability, or heavy bleeding are meaningfully affecting quality of life.
Quick poll
When it comes to hormone therapy, what's your honest feeling?
Your 50s: The window that matters most
Clinicians increasingly describe the early postmenopausal years as a "window of opportunity", and the science supports urgency here. The timing hypothesis, one of the most important concepts in modern menopause medicine, says that starting estrogen within 10 years of menopause onset, or before age 60, supports the health of blood vessel linings in ways that starting later may not. The ELITE trial and KEEPS trial are among the most cited studies supporting this framework.
The timing hypothesis: starting estrogen while blood vessels are still healthy and responsive may offer cardiovascular protection. Starting after plaque has begun to build may not, and could carry additional risk.
"If we are going to use HRT for dual benefits, symptom relief and long-term preventive health, the 50s are the prime window to initiate therapy safely," says Holmes. "We must act while the vasculature is still healthy and responsive."
Goddard takes a more measured read of the cardiovascular data but agrees on the safety of this window: "What we can say is that taking hormone therapy to manage perimenopausal and menopausal symptoms in your 40s and 50s doesn't increase a woman's risk for cardiovascular disease," she says.
Your 60s and beyond: Individualized, not automatic
The idea that women should stop MHT at 65 is, in Holmes's words, "largely considered obsolete" by updated guidelines, including those from The Menopause Society (formerly NAMS). Instead, the guidelines support individualized continuation — meaning a woman who is healthy, active, low-risk, and benefiting from MHT has no evidence-based reason to stop based on a birthday.
That said, the approach does shift as women age. Both experts recommend moving away from oral estrogen and toward transdermal formulations (patches, gels, or sprays) as women age. Research published in the BMJ supports this, showing that transdermal delivery bypasses the liver and carries a meaningfully lower risk of blood clots compared to oral estrogen.
Goddard adds an important nuance for women who have not yet started systemic MHT by their early 60s: it's probably best not to start. "Starting hormone therapy after age 60 is associated with increased risks for cardiovascular disease and dementia," she says. Vaginal estrogen, however, is considered safe for long-term use at any age and remains a strong first option for genitourinary symptoms (vaginal dryness, bladder changes).
📋 New research worth knowing: A 2026 large-scale study found that starting MHT after age 65 carries increased risks for certain cancers and cardiovascular events, reinforcing that timing matters. As always, the decision should be individualized. Read the full findings here.
What women most misunderstand
Holmes and Goddard both point to the same disconnect: women are still making decisions based on fear, much of it rooted in the 2002 Women's Health Initiative headlines that overstated breast cancer risk for most healthy women starting MHT in the appropriate window.
Goddard also pushes back on the opposite extreme. "For years, women were told hormone therapy was too dangerous to even consider. Now, women are hearing that hormone therapy is the key to longevity. In reality, hormone therapy is neither all good nor all bad.”
Hormone therapy is not a magic bullet answer – it's a tool we can use to effectively manage symptoms in perimenopause and menopause," Goddard says.
Her bottom line: if you feel good without it, it's fine to skip it. If symptoms emerge, it's worth a conversation.
Holmes frames the bigger picture this way: "Hormone therapy works best in a body that is being supported metabolically. Managing cortisol, prioritizing protein, and maintaining insulin sensitivity are what allow hormone therapy to do its best work. We cannot rely on estrogen to fix an inflammatory lifestyle; they must work in concert," she says.
What all of this research points to is a move away from a one-time decision toward an ongoing, evolving conversation with a clinician who knows your full health biography. That's not a small ask of the healthcare system, but it's what women deserve.
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If your work supports women's long-term hormonal health through science-backed products, services, or education, we'd love to explore a partnership. Our community values credibility, transparency, and impact over trends.
Join the conversation.
Hormone therapy is one of those topics where the questions don't stop after you finish reading. The Livelong Women's Circle is where this conversation continues. If you're looking for a smart, supportive space to think through these decisions alongside other women who get it, you're welcome here.
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