Signs of Menopause at 40

Understanding Early Menopausal Symptoms and When to Seek Help

Menopause is commonly associated with women in their late 40s or early 50s, but for some, it can begin much earlier. If you’re around 40 and experiencing unexpected changes in your cycle, mood, or physical health, you may be wondering whether it’s related to early menopause.

We will look at the signs of menopause at 40, why it can happen earlier for some women, and what steps you can take to manage the transition confidently with the right support.

Is It Normal to Experience Menopause at 40?

The average age for menopause in the UK is 51, but menopause can happen earlier due to genetics, medical treatment, or naturally without a clear cause.

When menopause begins before the age of 45, it's known as early menopause. If it happens before 40, it’s called premature ovarian insufficiency (POI).

Although less common, experiencing menopause at 40 is not unusual, and recognising the signs early can help you manage symptoms more effectively and protect your long-term health.

Early Signs of Menopause at 40

If you're 40 and starting to notice changes in your body or emotions, these are the most common early menopause symptoms to look out for:

1. Irregular or Missed Periods

One of the first signs of menopause is a change in your menstrual cycle. Your periods may:

• Become more or less frequent

• Be lighter or heavier than usual

• Skip months entirely

These changes result from fluctuating hormone levels affecting ovulation.

2. Hot Flushes and Night Sweats

Sudden feelings of heat in the face, chest, or whole body can be an early sign of menopause. These hot flushes often occur without warning and may be accompanied by sweating and a racing heart. Night sweats can lead to disturbed sleep.

3. Mood Changes and Anxiety

Hormonal shifts affect neurotransmitters in the brain. You may feel:

• More irritable than usual

• Anxious or unsettled

• Tearful or emotionally sensitive

• Less able to manage stress

These symptoms can appear suddenly and may not follow the same pattern as premenstrual mood changes.

4. Sleep Disturbances

Difficulty falling or staying asleep is common. This may be due to night sweats, increased anxiety, or hormonal disruption. Over time, poor sleep can affect concentration and emotional stability.

5. Vaginal Dryness or Discomfort

Lower oestrogen levels can cause thinning of the vaginal walls and a reduction in natural lubrication, leading to:

• Dryness

• Irritation

• Pain during intercourse

More detail is available via the NHS guide on vaginal dryness.

6. Low Libido

A decrease in sexual desire is common, often linked to hormonal changes, stress, fatigue, and vaginal discomfort.

7. Brain Fog and Forgetfulness

Struggling to remember names, losing your train of thought, or feeling mentally slow are all potential signs.

8. Weight Changes

Changes in body shape and increased abdominal fat are common during early menopause due to a slowing metabolism and hormone shifts.

9. Fatigue

Even after a full night’s sleep, you may feel exhausted. This may be linked to sleep issues, hormone imbalance, or mood changes.

10. Joint and Muscle Aches

Oestrogen helps protect joints and muscles. Its decline can lead to stiffness, soreness, or increased sensitivity to pain.

Why Does Menopause Happen Early?

There are several reasons why a woman might experience menopause around the age of 40:

• Family history – Early menopause can run in families

• Autoimmune conditions – Some immune disorders affect ovarian function

• Medical treatments – Chemotherapy, radiation, or surgery (e.g. hysterectomy)

• Genetic conditions – Such as Turner syndrome or Fragile X premutation

• Unknown causes – In many cases, early menopause occurs without a clear reason

If you’re unsure why symptoms are occurring, it’s important to seek medical advice for a diagnosis.

How Is Early Menopause Diagnosed?

A GP or menopause specialist may carry out:

• A review of symptoms and menstrual history

• Blood tests to check levels of follicle-stimulating hormone (FSH) and oestrogen

• Tests to rule out other conditions (such as thyroid disorders)

If you’re experiencing signs of menopause at 40, don’t ignore them—early diagnosis helps prevent long-term complications such as bone loss and cardiovascular risk.

How to Manage Menopause Symptoms at 40

Managing menopause in your early 40s is important for both short- and long-term health. Here’s what you can do:

1. Speak to a Specialist

At Surrey Menopause Clinic, we help women of all ages navigate menopause with personalised care plans. If you suspect early menopause, we’ll guide you through diagnosis, treatment options, and long-term health planning. Contact us here to arrange a consultation.

2. Consider Hormone Replacement Therapy (HRT)

HRT is often recommended for women who experience early menopause. It replaces declining hormones to:

• Ease symptoms like hot flushes and low mood

• Protect bone and heart health

• Improve quality of life

More information is available in the NHS HRT overview.

3. Lifestyle Support

• Stay active – Regular movement improves mood, supports joints, and protects bone density

• Eat a balanced diet – Focus on calcium-rich foods, healthy fats, and whole grains

• Limit alcohol and caffeine – These can worsen hot flushes and sleep problems

• Prioritise sleep and rest – Aim for 7–8 hours of quality sleep per night

• Seek emotional support – CBT, counselling, or support groups can help you manage mental and emotional changes

When to Seek Help

See a menopause specialist or GP if:

• Your periods have become irregular or have stopped unexpectedly

• You’re experiencing persistent hot flushes, mood swings, or sleep issues

• You’re under 45 and suspect hormonal changes

• You want advice on fertility, contraception, or HRT

At Surrey Menopause Clinic, we provide expert care for women across Surrey, including those going through early menopause.