What age does menopause start, and how long does it last?

What is the average age of menopause?

Menopause is often talked about as if it happens on a single day, but it is really the end point of a process that stretches over years. According to the World Health Organization, natural menopause usually happens between ages 45 and 55 worldwide (WHO). The Turkish Society of Obstetrics and Gynecology (TJOD) says the age of menopause in Türkiye is about 47–49, compared with around 50–52 worldwide (TJOD). The Turkish Ministry of Health’s Public Health Directorate (HSGM) also writes that studies in Türkiye put the average age of menopause at 47–49 (HSGM).

These figures are averages, not a deadline for any one person. Knowing that the reported average in Türkiye is a few years earlier than the world average helps you see that changes starting at 47–48 are not “early.” Some women reach menopause before 45, some after 55. Menopause before 45 is called “early menopause,” and menopause before 40 is considered separately as premature menopause or premature ovarian insufficiency. We cover this on the early menopause page.

Besides natural menopause, there is also menopause with a medical cause. Surgical removal of both ovaries, or treatments such as chemotherapy and radiotherapy that stop the ovaries from working, can bring on menopause regardless of age.

When does perimenopause start?

Perimenopause is the transition leading up to menopause. The WHO defines it as the period from the first appearance of menopausal symptoms until one year after the last period, and says it can last several years (WHO).

According to TJOD, from your 40s onward, irregular periods caused by less frequent ovulation come first. Then intermittent hot flashes (hot flushes), sweating and emotional changes are added; complaints may increase over time (TJOD). In other words, the first sign of perimenopause is often not a hot flash but a change in your bleeding pattern.

Menopause stages: STRAW+10 in plain language

Researchers and clinicians use an international staging system called STRAW+10 to describe this journey. Its main criterion is your bleeding pattern; hormone measurements such as FSH and AMH appear only as supportive information and are not required (Harlow et al., 2012). In plain language, the stages are:

Early transition

Periods still come, but cycle length has started to change. The STRAW+10 criterion is a persistent difference of 7 days or more between the lengths of consecutive cycles. For example, one cycle lasts 26 days, the next 34 days, and differences like this keep recurring (Harlow et al., 2012).

Late transition

Gaps of 60 days or longer between periods start to appear. This stage lasts 1–3 years on average. Symptoms such as hot flashes are expected to become more frequent during this time (Harlow et al., 2012).

Final period and early postmenopause

Your final period can only be identified in hindsight: if no period follows for 12 months, that bleed counts as the “final period.” According to STRAW+10, the end of this 12-month span is also the end of perimenopause. The early postmenopause phase that follows lasts about 5–8 years in total. For roughly the first 2 years hormones change rapidly; after that, hormone levels settle into a steadier pattern (Harlow et al., 2012).

Late postmenopause

Hormonal change becomes limited. The main focus in this phase is the physical changes that come with aging (Harlow et al., 2012).

You can see which stage your cycle pattern resembles with a short quiz; the result is not a diagnosis.

How do I know I’ve reached menopause? The 12-month rule

Menopause is recognized when you have gone 12 consecutive months without a period, with no other cause (WHO). TJOD also states that one year without menstrual bleeding is enough to define menopause.

There are a few important points about this rule:

• You start counting from the first day of your last period. If you go 10 months without a period and then bleed in month 11, the count resets.
• If you use hormonal contraception or another hormonal treatment that affects your bleeding pattern, this rule isn’t reliable.
• In people who have had their uterus removed, there are no periods, so the rule can’t be used; the assessment is based on symptoms.

The most important consequence of the rule is this: any bleeding after the 12 months are complete counts as “postmenopausal bleeding” and should be checked by a clinician (NHS, Symptoms). We explain this in detail on the bleeding after menopause page.

How long do menopause symptoms last, and when do they stop?

Sources give different ranges, which shows how much the duration varies from person to person:

• NHS: Symptoms usually last 7–9 years, sometimes longer, and can change over time (NHS, Symptoms).
• Turkish Ministry of Health: Symptoms usually last 1–2 years, but can sometimes stretch to 5–10 years (HSGM).
• SWAN study: In this study, which followed 1,449 women in the US for years, the total duration of hot flashes and night sweats was a median of 7.4 years, and they continued for a median of 4.5 years after the last period (Avis et al., 2015).

SWAN also looked at what affects how long symptoms last. Duration was longest in those whose symptoms began while their periods were still regular or early in the transition. Symptoms also lasted longer in those who were younger when symptoms began, and in those with higher levels of stress, depressive symptoms or anxiety (Avis et al., 2015). The researchers recommend telling women that symptoms may last longer than 7 years.

So the expectation that “it lasts a few months and then passes” isn’t realistic for most people. If symptoms are making life hard, you don’t have to wait for them to shorten on their own; you can talk through the options with your clinician.

Why do check-ups matter after menopause?

Menopause is not a disease; it is a natural stage of life. But the drop in estrogen brings certain health topics to the fore over the long term. The WHO says that loss of bone density during menopause is an important reason for the rise in osteoporosis (thinning, weakened bones) and fractures. According to the same source, after the marked drop in estrogen, the advantage women have over men in protection against cardiovascular disease is gradually lost (WHO).

So it helps to think of menopause not just as the line where symptoms end, but as a time to start paying attention to your bone and heart health. You can discuss with your clinician which check-ups are right for you.

What can you observe yourself?

The most reliable way to understand which stage you’re in is your own period record. When you write down the start date of each period, you can answer three questions: Is there more than a 7-day difference between my cycles? Has there been a gap of more than 60 days? How many months has it been since my last period? If you add hot flashes, night sweats and sleep changes to this record, you’ll have a concrete timeline when you see your clinician. For example, saying “I’ve had four periods in the last year, the longest gap was 75 days, and my last period was 5 months ago” gives far more information than “My periods are irregular.” With this information, your clinician can more easily assess both your stage and whether another cause needs to be looked into.