Early menopause: causes, signs, and what to do

Have your periods become irregular and then stopped before you turned 40? Are you experiencing hot flashes or night sweats at an age when your friends haven't even heard of them? It might be early menopause.

In our series Génération Péri, we talk a lot about perimenopause, the transition that typically begins between 40 and 45. Flamme Servera, founder of Ginama and partner of the series, reminds us: many women are unaware that symptoms can start as early as 35. But when periods stop before 40, it’s a different category: it’s no longer just "early" perimenopause, but a situation that requires a thorough medical assessment.

Early menopause: the definition

Early menopause corresponds to the permanent cessation of periods before the age of 40. The ovaries no longer release eggs regularly and produce little to no estrogen.

Doctors also refer to it aspremature ovarian insufficiency (POI). This term is more accurate, as ovarian function can sometimes resume intermittently; this is why spontaneous pregnancy remains possible for a small percentage of affected women.

To put things in perspective:

Symptoms of early menopause

They are similar to those of natural menopause but occur much earlier. Sometimes, there are almost no symptoms at all, other than changes in your periods.

• Lighter, irregular periods, followed by their absence. This is often the first sign.
• Hot flashes and night sweats.
• Sleep disturbances, anxiety, and mood swings.
• Vulvovaginal dryness, and a decrease in libido.
• Difficulty conceiving : for some women, early menopause is discovered during an infertility workup.

For the full list of possible symptoms, read our article on the 35 symptoms of perimenopause.

Periods that stop for more than three months before age 40, outside of pregnancy or contraception that suppresses them, are a good reason to see a doctor.

What are the causes of early menopause?

For many women, no cause is found. When there is one, it can be:

• genetic : certain chromosomal abnormalities, such as Turner syndrome, or a premutation of the fragile X gene;
• familial : a history of early menopause in your mother or sister;
• autoimmune : the immune system attacks the ovaries, sometimes along with other organs, such as the thyroid;
• medical : chemotherapy, pelvic radiation therapy, or surgical removal of the ovaries;
• infectious, more rarely (mumps, for example);
• tobacco-related, which is associated with earlier menopause.

A medical assessment is important to investigate these causes, particularly those that may affect other organs or other members of your family.

How is the diagnosis made?

The diagnosis is based on your history (periods, symptoms, medical background) and on blood tests, often repeated a few weeks apart. We specifically measure FSH, a hormone that increases when the ovaries are less active, as well as estrogen levels. Other tests may be suggested to look for a cause: thyroid screening, autoimmune testing, and genetic analysis.

To prepare for this consultation, note the date of your last period, how your cycles have changed over the last few months, your symptoms, your current treatments, and your family history (age of your mother's menopause, autoimmune diseases). This information is very helpful for the doctor in guiding the assessment.

This is an important difference from typical perimenopause, where a single blood test is often not very informative because hormone levels fluctuate so much.

Why early menopause requires medical management

Estrogen is not just for cycles. It also protects your bones, heart, and brain. When it is lacking for many years before the typical age of menopause, risks increase. According to the MSD Manual, without treatment until around age 51, the risk of osteoporosis and coronary heart disease increases, as does the risk of depression.

That is why early menopause is not just a matter of comfort: it is a matter of prevention.

Treatments for early menopause

Hormone therapy

This is the standard treatment. It provides the hormones that the ovaries are no longer producing: either in the form of hormone replacement therapy or as combined oral contraceptives, depending on the situation. It is generally continued until the typical age of menopause, around 51 years old, then re-evaluated. If you still have your uterus, a progestogen is added to protect it.

This is an important point: for a young woman in early menopause, hormone therapy is discussed differently than it would be at 55. It aims to replace what is missing at an age when the body should still be producing it. Your gynecologist or endocrinologist will adapt it to your situation, especially if you have a history of hormone-dependent cancer.

Lifestyle

It complements the treatment, but does not replace it:

• regular physical activity, including strength training and weight-bearing exercises for bone health;
• sufficient intake of calcium, vitamin D, and protein;
• quitting smoking;
• regular cardiovascular and bone health monitoring.

What about dietary supplements?

They can help relieve certain symptoms, but they do not replace hormone therapy in early menopause, as they do not protect the bones or heart in the same way. If you are considering taking them, talk to your doctor. To understand how to choose them, read our article on food supplements during perimenopause.

Early menopause and wanting a child

This is often the most painful question. A few key points:

• a spontaneous pregnancy remains possible, but rare: about 5 to 10% of affected women conceive spontaneously;
• if you do not wish to become pregnant, ask your doctor if contraception is still necessary;
• the egg donation is a possible option for women who wish to have a child;
• if a treatment that poses a risk to the ovaries is planned (such as chemotherapy), fertility preservation can be discussed beforehand.

This journey can be emotionally taxing. Psychological support, patient associations, and fertility specialists can help ensure you don't have to go through it alone.

Taking care of yourself every day

Beyond medical treatment, a few lifestyle adjustments can help you better manage early menopause:

• For vaginal dryness : hormone-free moisturizing gels or local treatments prescribed by your doctor can provide relief. Don't hesitate to bring it up, even if you feel embarrassed.
• For hot flashes : light clothing, a handheld fan, stress management, and breathing exercises. We’ve gathered all the tips in our guide on hot flashes.
• For sleep and mood : a consistent evening routine, daytime physical activity, and psychological support if you're feeling down.
• For bone health : walking, running, dancing, strength training—anything that puts weight on your bones.

And above all, keep up with regular check-ups: early menopause requires long-term management, not just a single consultation.

Don't face your questions alone

Flamme has read it dozens of times in Ginama questionnaires: many women feel alone, unheard, and are sometimes sent home with a "you're too young." If your body is changing before age 40, you have the right to be taken seriously. Track your cycles, describe your symptoms, and if you aren't being heard, seek a second opinion. To understand everything about the hormonal transition, check out our guide on perimenopause, our article onthe age of perimenopauseand our content onmenopause.

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Key takeaways

• Early menopause, or premature ovarian insufficiency, is defined as the cessation of periods before the age of 40.
• Causes can be genetic, hereditary, autoimmune, or medical, though they often remain unknown.
• A lack of estrogen increases risks for bone and heart health, making medical management a matter of prevention.
• Hormone replacement therapy is generally recommended until the typical age of menopause.
• Spontaneous pregnancy remains possible but rare, and egg donation is an option.

FAQ

At what age is it considered early menopause?

When periods stop permanently before the age of 40.

What is the difference between early menopause and perimenopause?

Perimenopause is a transition period, where periods are still occurring, which often begins after age 40. Early menopause is the cessation of ovarian function before age 40, which requires medical investigation.

Can you get pregnant if you have early menopause?

It is possible but rare: about 5 to 10% of affected women conceive spontaneously. Egg donation is another option.

Should early menopause be treated?

In the vast majority of cases, yes. Hormone therapy helps protect the bones and heart until the typical age of menopause.

Is early menopause hereditary?

It can be. A family history is a risk factor, and certain genetic causes may affect other women in the family.

The information in this article is for educational purposes only and does not replace professional medical advice. Flamme Servera is the founder of the brand Ginama, a partner of the Génération Péri series; she is not a healthcare professional. If your periods stop before age 40, consult your doctor or gynecologist.