The Stages of Menopause: Premenopause, Perimenopause, Menopause and Postmenopause

Menopause is not a condition that begins suddenly one day; it is a hormonal transition that unfolds over many years. This process moves through four stages, each with its own distinct features: premenopause, perimenopause, menopause and postmenopause. Knowing which stage you are in matters a great deal — both for making sense of your symptoms and for making decisions about fertility at the right time.

This content was prepared under the medical supervision of Op. Dr. Armağan Ulubaş.

Premenopause: The Final Phase of the Reproductive Years

In medical terms, premenopause covers the entire reproductive span from the first period until menopause; in everyday use, it refers to the final years before the symptoms of menopause have begun. In other words, the simplest answer to "what does premenopause mean" is: the stage in which periods continue regularly, but hormonal change has quietly begun. During this time periods are usually regular and there is no obvious complaint; yet the number of eggs in the ovaries — the ovarian reserve — keeps declining silently. After the age of 35 in particular, both egg quantity and egg quality fall noticeably.

The symptoms of premenopause are often so mild they go unnoticed: the menstrual cycle may shorten by a few days, premenstrual tension may increase, or there may be slight changes in sleep quality. During this period the AMH test, which reflects ovarian reserve, provides valuable information about fertility potential and helps guide planning for the years ahead.

What Is Perimenopause? The Transition Period

Perimenopause is the true transitional stage before menopause; it usually begins in the 40s and lasts, on average, 4-8 years. This is exactly where the difference between premenopause and perimenopause becomes clear: while periods continue regularly in premenopause, in perimenopause menstrual irregularities and symptoms come to the fore. Because the ovaries' hormone production becomes erratic, symptoms become more pronounced at this stage:

• Irregular periods: cycles that shorten, lengthen or are skipped
• Hot flushes and night sweats
• Sleep problems and daytime fatigue
• Mood swings, forgetfulness and difficulty concentrating
• Vaginal dryness and reduced sexual desire

One important point: in perimenopause ovulation becomes irregular but does not stop completely. For this reason pregnancy is still possible during this period; those who do not wish to conceive are advised to continue contraception, while those who are planning a pregnancy should consult a reproductive health specialist without losing time. That is because at this stage the single most decisive factor in treatment success is time.

Menopause: The Permanent End of Menstruation

Menopause is medically defined as the complete absence of periods for 12 months after the last menstrual bleeding, and this diagnosis is made in retrospect. In Turkey and worldwide, the average age of menopause is between 45 and 55, most often around 51. At this point the ovaries have completed their ovulatory function and oestrogen production has fallen permanently.

When menopause occurs before the age of 40 it is called early menopause (premature ovarian insufficiency) and is seen in roughly one in every 100 women. Genetic predisposition, autoimmune diseases, chemotherapy, radiotherapy or ovarian surgery can pave the way for early menopause. For women with a family history of early menopause, having their ovarian reserve checked at an early age and, where necessary, considering egg freezing is the most effective way to preserve fertility.

Postmenopause: The Years After Menopause

Postmenopause covers the entire period of life after the diagnosis of menopause. Symptoms such as hot flushes ease over time; however, the long-term effects of low oestrogen come to the fore during this period. A decline in bone density (risk of osteoporosis), changes in cardiovascular health and urogenital complaints may be seen. Regular medical check-ups, bone density measurement, a balanced diet, vitamin D and regular exercise are the cornerstones of protecting quality of life at this stage. Where necessary, hormone therapy may be considered following a doctor's assessment.

Menopause and Fertility: What Is Possible at Each Stage?

In terms of fertility, the picture changes from stage to stage. In premenopause and perimenopause, pregnancy with one's own eggs — either naturally or through IVF — may still be possible; ovarian reserve and egg quality are the deciding factors. After menopause, pregnancy with one's own eggs is not possible; however, as long as the uterus is healthy, pregnancy can be achieved through egg donation. In donation treatments, pregnancy rates can reach levels of up to 90%; suitability is always determined through an individual medical assessment.

At Clavis IVF Center, with more than 23 years of experience, we assess the scientific and realistic options together in every situation — from women planning a pregnancy during perimenopause to patients facing early menopause. Our team, which has accompanied more than 45,000 families on their journey to date, is ready to map out the right path for you too.

What Can Be Done to Cope With the Symptoms?

The first step in easing the menopausal transition is lifestyle. Regular exercise — especially walking and bone-strengthening resistance work — helps reduce hot flushes and protect bone health. Limiting caffeine, alcohol and spicy foods eases hot flushes in some women. A diet rich in calcium and vitamin D, a regular sleep routine and stress management are the essential supports of this period. If symptoms significantly affect quality of life, medical options including hormone therapy should always be assessed together with a doctor; getting personalised advice is always safer than using supplements based on hearsay.

Frequently Asked Questions

What does premenopause mean?
Premenopause is the stage before menopause when periods are still regular but hormonal change has quietly begun. There is usually no obvious complaint during this time, while the ovarian reserve continues to decline slowly.

What is the difference between premenopause and perimenopause?
In premenopause, periods continue regularly and hormonal change progresses quietly, before causing any symptoms. Perimenopause is the transitional period before menopause, marked by menstrual irregularities and symptoms such as hot flushes.

Can you conceive during perimenopause?
Yes. Although ovulation becomes irregular, it does not stop completely; those who do not wish to conceive should continue contraception, while those who do should seek expert assessment without losing time.

What is early menopause?
It is when menopause occurs before the age of 40. It may be caused by genetic factors, autoimmune diseases, chemotherapy or ovarian surgery; early diagnosis is highly important for fertility.

Is it possible to become a mother after menopause?
Although pregnancy with your own eggs is not possible, if the uterus is healthy, pregnancy can be achieved through egg donation. Suitability is determined by the doctor after a comprehensive medical assessment.