Last updated November 13, 2026 · Reviewed by the Gala Health team
The window: under 60 or within 10 years of menopause
Menopause is reached after 12 months in a row without a period, and the Office on Women's Health says perimenopause, the years of change before it, usually begins in the mid to late 40s. The clock that matters for HRT starts at menopause. The Menopause Society's 2022 position statement says that for women younger than 60 or within 10 years of menopause onset with no contraindications, the benefit-risk ratio is favorable for bothersome hot flashes and bone loss, and that it becomes less favorable for women who start later.
FDA adopted the same window. When it announced the boxed-warning changes on November 10, 2025, it said the labeled recommendation for systemic HRT will be to start within 10 years of menopause onset or before age 60, while leaving timing and duration to the prescriber and patient.
Most women are well inside the window when symptoms appear, because hot flashes often begin in perimenopause. If yours have started, that is the time to talk to a clinician, not years later.
Why timing matters: the KEEPS and ELITE trials
The idea that estrogen behaves differently in newly menopausal women than in women many years past menopause is called the timing hypothesis. Two randomized trials were designed to test it on the arteries:
| KEEPS (2014) | ELITE (2016) | |
|---|---|---|
| Who | 727 healthy women aged 42 to 58, 6 to 36 months after their last period | 643 healthy postmenopausal women, split into under 6 years and 10 or more years since menopause |
| Treatment | Oral conjugated estrogens 0.45 mg or a 50 mcg estradiol patch, each with oral progesterone 200 mg for 12 days a month, or placebo, for 4 years | Oral estradiol 1 mg a day (plus vaginal progesterone gel if they had a uterus) or placebo, median 5 years |
| Main result | Artery wall thickening progressed at the same rate in all groups; some heart risk markers improved | In early starters, artery wall thickening progressed more slowly on estradiol than placebo; in late starters, no difference |
| Safety | Serious adverse events did not differ between groups | Coronary CT measures did not differ in either group |
Neither trial was large enough to count heart attacks, so they measure markers, not events. The Menopause Society summarizes the evidence this way: starting hormone therapy in recently postmenopausal women reduced or had no effect on the progression of atherosclerosis in randomized trials, while women starting after 60, or 10 to 20 years past menopause, face higher absolute risks of heart disease, clots and stroke.
The Women's Health Initiative points the same way. Comparing women aged 50 to 59 with women aged 70 to 79, the ratio of hazard ratios for death from any cause was 0.61 during the treatment years. For more on how those numbers are read today, see is HRT safe.
Can you start HRT in perimenopause?
Yes. The Menopause Society notes that hot flashes may begin during perimenopause, and nothing in the evidence requires you to wait for the final period. Starting while periods are still coming changes how progesterone is given: at Gala, women aged 40 to 44 with a uterus are started on cyclical progesterone (days 1 to 12 of each cycle) by default, and the provider still makes the final choice.
One limit is worth knowing: the statement says data are insufficient on the risks of long-term hormone therapy started in perimenopause or before age 50. Our guides to HRT for perimenopause and perimenopause vs menopause cover this stage in depth.
Menopause before 40 or 45 is a separate case. For women with primary ovarian insufficiency or early menopause, the statement says the risks of estrogen deficiency to bone, heart and brain appear to be reduced if estrogen is given until the average age of menopause, when the decision is revisited.
Is it too late to start HRT at 60 or 65?
Not automatically, but the math changes. The Menopause Society says starting after 60, or more than 10 years after menopause, "has complex risks and requires careful consideration", and also recognizes that some well-counseled women over 60 choose to start or restart. In a Cochrane analysis it cites, women who started that late had no change in heart disease (relative risk 1.07) or mortality (1.06), but more strokes (1.21) and blood clots (1.96).
Hot flashes that appear for the first time many years after menopause need a check before hormones. The statement lists other causes, including sleep apnea, an overactive thyroid, certain infections and cancers, and medications or alcohol withdrawal.
- Systemic HRT (pills, patches, gel) after 60: possible for some women, with the lowest effective dose and, as the statement suggests for older women, consideration of a transdermal route.
- Vaginal estradiol: low-dose vaginal estrogen may be considered at any age and for as long as needed, so dryness, painful sex and urinary symptoms can be treated at 65 and beyond.
- Non-hormonal treatment: an option for hot flashes at any age when hormones are not appropriate.
At Gala, systemic HRT is offered to women aged 40 to 65. From 66, Gala's clinical rules allow local vaginal estradiol only, and the non-hormonal option can treat hot flashes without estrogen.
How long can you stay on HRT?
There is no fixed end date. The Menopause Society calls an arbitrary age-based stopping rule "not clinically appropriate": frequent hot flashes last 7.4 years on average and more than 10 years for many women, and up to 8% still have them 20 years after menopause. Its key points say hormone therapy does not need to be routinely stopped at 60 or 65.
What changes with time is the review. Longer use is reasonable for persistent hot flashes or fracture prevention in healthy women at low risk, with the lowest effective dose, a nonoral route considered as you age, and periodic trials of lowering the dose. In the WHI, a breast cancer signal appeared after 3 to 5 years of estrogen plus progestin, while estrogen alone showed no increase after 7 years, so women without a uterus may reasonably stay on longer.
When and how to stop HRT
Stopping is a personal decision made with your clinician, usually when symptoms have faded or your risks have changed. Three things to expect:
- Hot flashes come back in about half of women after stopping, according to the position statement.
- No trials compare stopping abruptly with tapering, but experts generally advise lowering the dose gradually.
- Bone protection fades quickly once estrogen stops, and vaginal dryness tends to worsen with time, so the statement advises offering treatment options such as low-dose vaginal estrogen when systemic therapy ends.
Start HRT with Gala
If you are in the window and your symptoms are bothering you, there is no benefit in waiting. Gala's online assessment covers your age, cycle, symptoms such as hot flashes and weight changes, and your health history, and a licensed provider decides whether estradiol, progesterone or another option fits. Read about the program on the hormone health hub or start your menopause assessment.
Frequently asked questions
When should I start HRT?
When menopause symptoms start to bother you, ideally before age 60 or within 10 years of your last period. The Menopause Society finds the benefit-risk balance most favorable in that window, and FDA's labeled recommendation for systemic HRT matches it.
What age should you start HRT?
There is no single age. Perimenopause usually begins in the mid to late 40s, according to the Office on Women's Health, and HRT can start as soon as symptoms bother you. Starting before 60, or within 10 years of the last period, carries the lowest absolute risks.
Is it too late to start HRT at 60?
Not necessarily. The Menopause Society says starting after 60 requires careful consideration because risks of stroke, clots and heart disease are higher, but some well-counseled women choose to start. A lower dose and switching from a pill to a patch or gel are ways it suggests to reduce risk in older women.
Can you start HRT at 65?
Systemic HRT can be started at 65 in some cases with careful review. Low-dose vaginal estrogen can be used at any age for vaginal and urinary symptoms. At Gala, systemic HRT is offered up to age 65, and vaginal estradiol after that.
How long should you take HRT?
As long as the benefits outweigh the risks for you. The Menopause Society says there is no arbitrary age to stop, since hot flashes last 7.4 years on average and much longer for some, but longer use should include regular reevaluation.
When should you stop HRT?
When your symptoms have eased or your health risks change, in a decision made with your clinician. Hot flashes return in about half of women who stop, and experts generally advise tapering the dose gradually.
Ready to talk to a provider?
Your answers go to a licensed provider, who decides whether treatment is right for you. Learn more about Hormone Health.
Treatments: Estradiol pill or patch online · Progesterone for menopause · Vaginal estrogen online · Non-hormonal menopause treatment
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Sources
- The 2022 hormone therapy position statement of The North American Menopause Society. Menopause. 2022;29(7):767-794. Full text.
- Harman SM, et al. Arterial imaging outcomes and cardiovascular risk factors in recently menopausal women: a randomized trial (KEEPS). Ann Intern Med. 2014;161(4):249-260.
- Hodis HN, et al. Vascular effects of early versus late postmenopausal treatment with estradiol (ELITE). N Engl J Med. 2016;374(13):1221-1231.
- Manson JE, et al. Menopausal hormone therapy and long-term all-cause and cause-specific mortality: the Women's Health Initiative randomized trials. JAMA. 2017;318(10):927-938.
- FDA. HHS Advances Women's Health, Removes Misleading FDA Warnings on Hormone Replacement Therapy. November 10, 2025.
- Office on Women's Health, HHS. Menopause basics. Checked 2026-11-13.
This article is for general information and is not medical advice. Talk to a licensed provider about your own health.
