Understanding Perimenopause: The Changes Before Menopause

Perimenopause is the natural transition leading up to menopause. During this time, hormone levels begin to change and periods may become less predictable.

Some women notice only minor changes. Others experience symptoms that affect their sleep, mood, relationships, work and general wellbeing.

These changes can begin before periods stop completely, which is why many women do not immediately connect their symptoms with perimenopause.

Understanding what is happening can make the experience feel less confusing and help women seek appropriate support sooner.

Why This Happens

Perimenopause happens as the ovaries gradually change the way they produce hormones, particularly oestrogen and progesterone.

Hormone levels do not always decline smoothly. They can fluctuate, which means symptoms may change from one month to the next.

A woman may feel well for several weeks and then suddenly experience disturbed sleep, anxiety, hot flushes or changes to her periods. Symptoms can also improve and return later.

This unpredictability is one reason perimenopause can be difficult to recognise.

Perimenopause, Menopause and Postmenopause

These terms describe different stages of the menopause transition:

• Perimenopause is the time leading up to menopause, when symptoms and menstrual changes may begin.

• Menopause is reached when a woman has not had a period for 12 consecutive months and there is no other medical explanation.

• Postmenopause describes the time after menopause.

Perimenopause often begins during the forties, but it can start earlier. Every woman’s experience is different.

Changes to Periods

A change in the menstrual cycle is often one of the first noticeable signs.

Periods may become:

• More or less frequent

• Heavier or lighter

• Longer or shorter

• More painful

• Less predictable

Some women may skip several periods and then have another one.

Although menstrual changes are common during perimenopause, unusual, persistent or very heavy bleeding should not automatically be attributed to hormones. It may need medical assessment.

Common Perimenopause Symptoms

Perimenopause can affect many different parts of the body.

Possible symptoms include:

• Hot flushes

• Night sweats

• Sleep disturbance

• Fatigue

• Mood changes

• Anxiety

• Low mood

• Irritability

• Problems with memory or concentration

• Brain fog

• Headaches or worsening migraines

• Palpitations

• Muscle aches

• Joint pain

• Changes in body weight or shape

• Dry or itchy skin

• Hair thinning

• Reduced sexual desire

• Vaginal dryness, irritation or soreness

• Discomfort during sex

• Urinary urgency

• Recurrent urinary tract infections

A woman does not need to experience every symptom to be in perimenopause. Symptoms can vary considerably in type, intensity and duration.

Why Symptoms Can Feel Unconnected

Many symptoms associated with perimenopause can also be caused or worsened by other factors.

For example:

• Poor sleep can affect memory, concentration and mood.

• Stress can contribute to anxiety, palpitations and fatigue.

• Heavy periods can sometimes contribute to iron deficiency.

• Thyroid conditions can cause symptoms that resemble menopause.

• Medication, illness and nutritional deficiencies may also affect wellbeing.

This is why it is important to consider the whole picture rather than assuming every new symptom is hormonal.

What Science Says

Perimenopause is a recognised physiological stage rather than an illness. However, its symptoms can have a substantial effect on health and quality of life.

The NHS explains that perimenopause and menopause affect everyone differently. Some women experience very few symptoms, while others find that symptoms significantly affect family life, relationships, social activities and work.

How Perimenopause Is Identified

For otherwise healthy women aged 45 or over who have typical symptoms and changes to their menstrual cycle, NICE advises that perimenopause can usually be identified without laboratory tests.

Hormone levels can fluctuate considerably during perimenopause, so a single blood test may not provide a clear answer.

Blood testing may be considered in some circumstances, including when symptoms occur at a younger age or when another medical condition needs to be investigated. NICE provides further guidance on identifying perimenopause and menopause.

Hormonal contraception can also affect bleeding patterns and make the menopause stage more difficult to identify.

The Effect of Oestrogen

Oestrogen has roles throughout the body. It influences areas including:

• Temperature regulation

• Bone health

• Vaginal and urinary tissues

• Skin and hair

• Mood and cognitive function

• The cardiovascular system

Changes in oestrogen levels may therefore contribute to symptoms that appear unrelated.

This does not mean that every physical or emotional change during midlife is caused by perimenopause. New, severe or persistent symptoms should still be assessed appropriately.

Treatment and Support Options

Support should be based on the woman’s symptoms, medical history, priorities and preferences.

Options may include:

• Lifestyle and wellbeing support

• Hormone replacement therapy

• Vaginal oestrogen

• Non-hormonal medication

• Menopause-specific cognitive behavioural therapy

• Psychological support

• Treatment for individual symptoms

HRT can be used during perimenopause; women do not have to wait until their periods have stopped. The appropriate type depends on factors such as whether the woman still has her womb, whether she is still having periods and her individual health history.

The benefits and risks should be discussed with an appropriate healthcare professional. The NHS provides an overview of available treatments.

HRT is not contraception. Pregnancy is still possible during perimenopause, so contraceptive needs should be discussed separately.

Complementary Products

Some supplements and herbal remedies are marketed for menopause symptoms.

Evidence for their effectiveness and safety varies. “Natural” does not automatically mean safe, and some products can interact with prescribed medicines or may be unsuitable for certain health conditions.

Speak to a pharmacist, GP or other qualified healthcare professional before beginning a supplement, especially if you take medication or have an existing health condition.

Practical Support Steps

Small, consistent actions may help women understand their symptoms and support their overall health during perimenopause.

1. Track Your Symptoms

Keep a simple record of:

• Period dates and bleeding patterns

• Hot flushes and night sweats

• Sleep quality

• Energy

• Mood

• Headaches

• Joint or muscle discomfort

• Vaginal or urinary symptoms

• Possible triggers

A symptom diary can help reveal patterns and provide useful information during a healthcare appointment.

2. Prepare for Your Appointment

Before speaking with a GP or nurse, write down:

• The symptoms affecting you most

• When they began

• How they affect daily life

• Changes to your periods

• Current medication and supplements

• Your relevant personal and family medical history

• Any questions about treatment

You are entitled to discuss symptoms even if you are still having regular periods.

3. Protect Your Sleep

Sleep can be disrupted by night sweats, anxiety, stress or changing sleep patterns.

Helpful habits may include:

• Keeping a regular sleep routine

• Making the bedroom cool and comfortable

• Wearing lightweight night clothes

• Reducing late-night caffeine and alcohol

• Creating time to wind down before bed

• Limiting screens immediately before sleep

Persistent sleep problems deserve support rather than simply being accepted as part of getting older.

4. Eat Regular, Balanced Meals

A balanced diet can support energy, digestive health, bone health and general wellbeing.

Aim to include:

• A source of protein

• Vegetables and fruit

• High-fibre carbohydrates

• Sources of healthy fats

• Calcium-rich foods

• Adequate fluids

Extreme diets or unnecessary food restrictions may make it more difficult to meet nutritional needs.

5. Include Strength and Weight-Bearing Activity

Hormonal changes can affect bone and muscle health.

Appropriate activity may include:

• Walking

• Dancing

• Resistance exercises

• Weight training

• Stair climbing

• Mobility and balance work

Exercise should be adapted to individual ability, health and symptoms. Starting gently and progressing gradually is more sustainable than trying to change everything at once.

6. Notice Personal Triggers

Some women find that hot flushes, sleep problems or anxiety are affected by:

• Alcohol

• Caffeine

• Smoking

• Spicy food

• Hot drinks

• Stress

• Warm rooms

Triggers are individual. Keeping a record can help identify what affects you without creating unnecessary restrictions.

7. Support Vaginal and Urinary Health

Vaginal dryness, soreness and urinary symptoms are common but often under-discussed.

Possible support includes:

• Vaginal moisturisers

• Water-based lubricants

• Pelvic-health support

• Prescribed vaginal oestrogen

• Assessment for persistent urinary symptoms

Speak to a pharmacist or healthcare professional about the most suitable option. Painful sex, recurrent urinary symptoms and persistent irritation should not be ignored.

8. Look After Your Mental Wellbeing

Hormonal changes, poor sleep and life pressures can all affect emotional wellbeing.

Support may include:

• Regular movement

• Relaxation or breathing exercises

• Talking with trusted people

• Menopause support groups

• Counselling

• Cognitive behavioural therapy

• Medical support for anxiety or depression

Seek urgent help if you feel unable to cope, unsafe or at risk of harming yourself.

9. Avoid Comparing Your Experience

There is no single “correct” menopause experience.

Someone else may have different symptoms, use a different treatment or move through the transition at a different pace. What helps one woman may not be appropriate for another.

Support should be individual rather than based on pressure, fear or comparison.

10. Know When to Seek Medical Advice

Speak to a GP or appropriate healthcare professional if:

• Symptoms are affecting your daily life

• You think you may be experiencing perimenopause

• Symptoms begin before the age of 45

• Your bleeding becomes unusually heavy

• You bleed between periods or after sex

• You experience new or persistent palpitations

• You have pain or symptoms that concern you

• Your mood is significantly affected

• You need help understanding treatment options

Any vaginal bleeding after 12 months without a period should be medically assessed, even if it happens only once or appears to be a small amount.

How Health Matters Supports This

At Health Matters UK, we believe women deserve clear, evidence-informed information about perimenopause.

Our approach is designed to help women:

• Understand what may be happening in their bodies

• Recognise and track their symptoms

• Prepare for healthcare conversations

• Explore realistic lifestyle support

• Ask informed questions about treatment

• Make choices that reflect their individual needs

• Feel heard and taken seriously

Perimenopause can feel unpredictable, but you do not have to dismiss your symptoms or struggle without information.

Learning about this stage is not about assuming that every symptom is hormonal. It is about understanding the possibilities, recognising when support may help and making informed decisions about your health.

If you would like support understanding your symptoms and preparing for your next steps, contact Health Matters UK at Healthmatters@consultant.com.

This article provides general educational information and does not replace individual medical assessment, diagnosis or treatment.