Menopause usually happens between the ages of 45 and 55, and the average age in the UK is 51 (NHS Dudley Group). Menopause before 45 is called early menopause, and before 40 it's called premature menopause or premature ovarian insufficiency (POI) (NHS).
Perimenopause, the run-up to your last period, often starts several years earlier. Here's what the ages mean and when it's worth getting checked.
Key takeaways
- The average age for menopause in the UK is 51, with most women reaching it between 45 and 55 (NHS Dudley Group).
- Early menopause means periods stopping before 45. Premature menopause (POI) means before 40 (NHS).
- Menopause is confirmed when you've had no period for 12 months and aren't using hormonal contraception (NHS).
- If you're under 45 and think you have menopause symptoms, see a GP.
What is the average age for menopause?
In the UK, most women reach menopause between 45 and 55, and the average is 51 (NHS Dudley Group). "Menopause" here means your final period. You only know it has happened looking back, once you've gone 12 months without a period (NHS).
Perimenopause comes first. This is when your periods become irregular and symptoms such as hot flushes, poor sleep and mood changes often begin (NHS). So many women notice changes in their early to mid-40s, well before their last period.
Menopause age ranges at a glance
| Age at last period | What it's called | What it usually means |
|---|---|---|
| Under 40 | Premature menopause, or premature ovarian insufficiency (POI) | Always worth a GP assessment (NHS) |
| 40 to 44 | Early menopause | See a GP if you have symptoms (NHS) |
| 45 to 55 | Usual age range | Average age in the UK is 51 (NHS Dudley Group) |
| Over 55 | Later menopause | Talk to a GP if periods continue and you have concerns |
What is early menopause?
Early menopause is when your periods stop before the age of 45 (NHS). Sometimes there's a clear reason. Often there isn't.
The NHS lists several things linked with early or premature menopause (NHS):
- a family history of early menopause
- starting your periods early
- smoking
- being underweight
- treatment for other conditions, such as chemotherapy, radiotherapy or surgery to remove your ovaries
It matters because lower oestrogen from an earlier age can affect your long-term health. The NHS notes that early menopause raises your risk of problems with your bones and heart (NHS). That's why treatment is usually discussed, even if symptoms feel manageable.
What is premature ovarian insufficiency (POI)?
POI is when your ovaries stop working normally before the age of 40, so your periods stop or become infrequent (NHS). Some women with POI still have occasional periods.
UK guidance says POI should be diagnosed from symptoms, including no or infrequent periods, plus a raised follicle-stimulating hormone (FSH) level on 2 blood samples taken 4 to 6 weeks apart. It should never be diagnosed on a single blood test (NICE NG23). Our guide to the perimenopause test explains when blood tests are and aren't useful.
If you're diagnosed with POI or early menopause, treatment options, including hormone replacement to top up low hormone levels, are discussed with your clinician (NHS). Treatment is usually continued until around the average age of menopause (University Hospital Southampton NHS). The NHS also suggests lifestyle steps such as regular exercise and calcium-rich food. Like any treatment, hormone replacement has benefits and risks, and your clinician will go through these with you.
Symptoms of early and premature menopause
The symptoms themselves are the same as menopause at a typical age — the difference is the context, and that is what makes them so much easier to miss.
The usual picture includes changes to periods (irregular, lighter, heavier, or stopping), hot flushes and night sweats, difficulty sleeping, low mood or anxiety, brain fog, vaginal dryness, reduced sex drive, and joint aches (NHS).
What differs before 45 is how those symptoms get explained away:
- Irregular periods are attributed to stress, weight change or exercise, which at 38 is a far more likely explanation than menopause — until it isn't.
- Hormonal contraception can mask the signal entirely. If the pill or a hormonal coil is controlling your bleeding pattern, the most obvious clue is hidden.
- Mood and sleep changes get treated on their own. Anxiety at 41 is rarely attributed to hormones first, and sometimes gets several months of treatment before anyone asks about periods.
- Fertility is often how it is discovered. For some women the first sign is difficulty conceiving, which is why the diagnosis can arrive in a fertility clinic rather than a GP surgery.
Two things make this worth pursuing rather than waiting out. Lower oestrogen from an earlier age affects bone and heart health over a longer period, which is why treatment is usually discussed even when symptoms feel manageable (NHS). And a diagnosis under 40 should never rest on one blood test — UK guidance is two FSH samples taken four to six weeks apart, alongside symptoms (NICE NG23).
If you are under 45 and your periods have changed, keeping a record of dates, flow and symptoms for a few months makes the appointment considerably more productive. Our free perimenopause checklist is built for exactly that, and the full symptom list covers what to look out for.
Can you predict when your menopause will start?
Not precisely. Family history is one clue, so it can help to ask your mother or older relatives when theirs happened (NHS). Changes in your periods are the other. They often become more or less frequent, or heavier or lighter, as you enter perimenopause (NHS).
A home test won't tell you when your menopause will happen. The Royal College of Obstetricians and Gynaecologists does not recommend over-the-counter menopause tests (RCOG, 2022).
To track what you're noticing, try our perimenopause checklist. You can also read about the stages of menopause.
When to see a GP
- you're under 45 and think you have menopause symptoms
- your periods have stopped or become infrequent and you're under 40
- your periods become heavier or more frequent
- you've had no period for 12 months and then have any vaginal bleeding
- symptoms are affecting your sleep, work, relationships or mood
If you're worried about your health and can't get a GP appointment, contact NHS 111. In an emergency, call 999.
If you'd prefer to talk to a GP with a focus on menopause, our online menopause clinic can help you understand your symptoms and your options.
Honest FAQs
What is the average age for menopause in the UK?
The average age is 51, and most women reach menopause between 45 and 55 (NHS Dudley Group).
Is menopause at 45 early?
Menopause before 45 is classed as early menopause. From 45 onwards is within the usual range (NHS).
Can you go through menopause in your 30s?
Yes. Menopause before 40 is called premature menopause or premature ovarian insufficiency (NHS). If your periods stop or become infrequent in your 30s, see a GP.
Does early menopause affect long-term health?
It can. The NHS says early menopause increases the risk of problems with your bones and heart, which is why treatment is usually discussed (NHS).
How do I know when menopause has happened?
Menopause is confirmed once you've had no period for 12 months and aren't using hormonal contraception (NHS).
This article is general information, not medical advice. Always speak to a qualified clinician about your own symptoms.
