Hormone therapy
When Should You Start HRT?
You can discuss HRT when menopause symptoms are bothering you, including while periods continue. There is no requirement to wait for the final period or for symptoms to become severe. Age and time since menopause matter to the safety assessment, but they do not replace a review of symptoms and medical history.

Start the discussion when symptoms affect your life
Hot flashes during a meeting, repeated nighttime awakenings from sweating, or vaginal pain can be reasons to seek care. Describe how often symptoms happen and what they interrupt. The decision to use HRT should follow the likely diagnosis, your preferences, and a review of benefits and risks.
Systemic hormones can treat hot flashes and night sweats. If vaginal symptoms are the only concern, a low-dose vaginal treatment may be sufficient. The choice of treatment is therefore part of the timing discussion, especially when systemic therapy would introduce risks you do not need to take.
There is no need to endure a fixed number of months before seeking help. If symptoms are uncertain or atypical, the clinician can investigate other causes while discussing ways to relieve them.
What the 'under 60 or within 10 years' guidance means
The Menopause Society describes a generally favorable benefit-risk balance for otherwise healthy women with bothersome symptoms who are younger than 60 or within 10 years of menopause and have no contraindications. This summarizes population evidence about starting systemic treatment.
It is not a guarantee of safety for everyone in that age range. Cancer history, blood clots, cardiovascular disease, liver disease, unexplained bleeding, and other circumstances can change the decision. Estrogen route, dose, and progestogen use also matter.
| Situation | What needs attention |
|---|---|
| Periods continue with typical transition symptoms | HRT can be discussed during perimenopause. Bleeding pattern, uterine protection, and contraception need planning. |
| Symptoms continue after the final period | Review systemic or local treatment according to symptoms, time since menopause, and current health. |
| First starting after 60 or more than 10 years after menopause | The balance is less favorable because absolute risks of some cardiovascular, clotting, and dementia outcomes are higher. A careful assessment is needed. |
| Ovarian insufficiency before 40 | Hormone replacement has a distinct role in addressing early hormone loss, including bone health. It should be assessed promptly. |
Testing should match the age and clinical question
NICE recommends identifying perimenopause clinically in otherwise healthy people aged 45 or older who have typical symptoms and menstrual changes. Routine estradiol, AMH, or ovarian imaging does not establish when HRT should begin. Hormone concentrations fluctuate during the transition.
FSH testing may be considered at ages 40 to 45 with suggestive symptoms, and before 40 when premature ovarian insufficiency is suspected. Hormonal contraception can make hormone tests and bleeding patterns difficult to interpret.
A clinician may order other tests for another reason, such as a blood count with heavy bleeding or thyroid tests with suggestive symptoms. These are targeted investigations, with the result interpreted alongside the history.
Early hormone loss deserves a separate discussion
Premature ovarian insufficiency occurs before age 40. NICE recommends hormonal replacement, unless contraindicated, and continuing it until at least the usual age of natural menopause. This addresses the effects of early hormone loss as well as symptom relief. HRT or an appropriate combined hormonal contraceptive may be considered.
Menopause at ages 40 to 44 is considered early menopause. The treatment discussion should account for younger age, symptoms, and bone and cardiovascular health. NICE notes that the benefits and risks in this group fall between those for premature ovarian insufficiency and menopause at the usual age.
Removal of both ovaries or some cancer treatments can also change the timing and nature of hormone loss. The cause, cancer history where relevant, and need for ongoing specialist care affect treatment choices.
What to settle before the first dose
- Which symptoms the treatment is intended to relieve, and whether local or systemic therapy is appropriate.
- Whether a uterus is present and which progestogen will protect its lining.
- Any unusual bleeding, relevant cancer or clot history, cardiovascular or liver disease, and other medicines.
- Contraception and pregnancy possibility while ovulation may continue.
- A written schedule, instructions for missed doses, and a follow-up appointment.
Investigate unexplained bleeding
Heavy, prolonged, between-period, or postmenopausal bleeding needs assessment. It should not be assumed to be a normal transition change. HRT may later be part of the treatment plan, but the cause and appropriate regimen need to be reviewed first.
A three-month review usually assesses benefit and tolerability, with earlier contact for significant side effects. Starting HRT is the beginning of an ongoing prescribing decision; symptoms, risks, and preferences can change over time.
Sources
References cited in this article.
- 1. When to take hormone replacement therapyNHS
- 2. Menopause: identification and management (NG23)NICE
- 3. Hormone therapy for menopauseACOG
- 4. 2022 hormone therapy position statementThe Menopause Society
- 5. PerimenopauseThe Menopause Society
- 6. Abnormal uterine bleedingACOG
- 7. Hypothyroidism (underactive thyroid)NIDDK
- 8. Early or premature menopauseOffice on Women's Health
- 9. Menopause basicsOffice on Women's Health