What are early menopause and premature ovarian insufficiency, and what can help?

Menopause is the final period. When it happens from age 40 to 44, it is called early menopause. POI is reduced ovarian activity before 40, with irregular or absent periods and hormone-test evidence. Ovarian activity can sometimes occur after a POI diagnosis, so periods or ovulation may return unpredictably.

These labels affect more than the name of the condition. Experiencing lower oestrogen earlier can change decisions about symptom treatment, bone and heart health, contraception and fertility. You do not need to wait 12 months without a period before asking for assessment if you are under 45 and your periods have become irregular or stopped.

Period changes may be the first sign, but not everyone has the same pattern. Other possible changes include hot flushes, night sweats, disrupted sleep, vaginal dryness, bladder or sexual symptoms, low mood, anxiety, brain fog, reduced energy, joint or muscle symptoms and changes in sexual desire.

These symptoms have other possible causes. Pregnancy, thyroid conditions, raised prolactin, changes in weight or exercise, stress, medicines and other health conditions may also affect periods or wellbeing. Symptoms alone cannot confirm early menopause or POI.

Sometimes no cause is found. POI or early menopause may follow surgery that removes both ovaries, chemotherapy, radiotherapy or another treatment that affects ovarian function. Genetic or chromosome differences and autoimmune conditions can also contribute.

A hysterectomy stops periods but does not itself cause immediate menopause when functioning ovaries remain. Removing both ovaries causes surgical menopause. If a planned operation or medical treatment could affect ovarian function, ask before treatment about expected effects, symptom support and fertility preservation where relevant.

A GP can ask about period timing, symptoms, pregnancy possibility, medicines, contraception, medical or surgical treatment and family history. Assessment usually includes pregnancy exclusion where relevant and hormone testing; a result may be repeated if the clinical picture or first result is uncertain. Other tests may look for another cause of missed periods or symptoms.

Diagnosis uses the history and hormone-test evidence together. Hormonal contraception or hormone treatment can affect periods and test results, so do not stop either without a plan from the clinician arranging the assessment.

Once POI is confirmed, further assessment may consider a genetic or autoimmune cause and baseline bone, heart and metabolic health. The useful tests depend on the history; there is no single universal panel to order for yourself. Specialist input can help when the diagnosis or cause is uncertain, fertility is a priority or another health condition changes treatment choices.

For POI, hormone treatment is usually recommended until around the usual age of menopause unless there is a reason it is unsuitable, even when hot flushes or other symptoms are absent. In this setting, treatment replaces hormones that the ovaries would usually still be producing and supports bone and broader health as well as symptoms. This is a different context from deciding whether to start MHT after menopause at the usual age.

The appropriate hormonal option depends on symptoms, whether the uterus is present, contraception needs, health history and preferences. A clinician can explain benefits, risks and monitoring. If hormone treatment is unsuitable or declined, discuss non-hormonal symptom support and an individual plan for bone, heart and sexual health. Do not start, stop or change prescribed treatment without clinical advice.

Early menopause at 40 to 44 also deserves an individual hormone-replacement discussion. Age, symptoms, bone and heart health, the cause, another health condition and previous cancer treatment can all affect the plan and whether specialist input is useful.

POI reduces fertility. With non-surgical POI, intermittent ovarian activity can sometimes occur and spontaneous pregnancy remains possible; after both ovaries have been removed, this does not apply. A diagnosis does not tell one person whether or when pregnancy is possible.

No intervention has reliably been shown to restore ovarian activity or increase natural conception after POI. Depending on the circumstances, a fertility specialist may discuss previously stored eggs or embryos, IVF using donor eggs, or other family-building choices. If a treatment that can damage ovarian function is planned, fertility preservation may be considered beforehand; once POI is established, this may no longer be possible.

Menopausal hormone therapy is not contraception. If pregnancy is possible and not wanted, discuss contraception alongside hormone replacement. If a period is late or pregnancy symptoms occur, take a pregnancy test or seek advice rather than assuming POI prevents pregnancy.

Earlier loss of ovarian hormone exposure is associated with higher risks to bone and cardiovascular health. The current international guideline recommends a bone-density scan when POI is confirmed. Assessment may also include blood pressure, smoking status, family and pregnancy history, and cholesterol or glucose measures. Repeat bone-density timing and other follow-up should be tailored to the initial result and risk rather than reduced to one schedule.

Regular weight-bearing and resistance activity, adequate food-based calcium and protein, vitamin D assessment when indicated, avoiding smoking and managing blood pressure, cholesterol and diabetes risk all matter.

An unexpected diagnosis can bring relief, grief, anger, uncertainty about fertility or changes in body image and relationships. These reactions deserve attention; they are not a reason to rush a treatment decision. Ask for another appointment, counselling or peer support if that would help. Vaginal, bladder or sexual symptoms can also be assessed and treated rather than accepted as inevitable.

It can help to bring a support person and write down the questions you want answered: what is known, what remains uncertain, which decisions are time-sensitive and when the plan will be reviewed.

Sources supporting this guide. Source organisations have not reviewed or endorsed HerDoc.