Perimenopause and mood: changes in your 40s

You wake at 3 am, heart racing, drenched in sweat. By noon you are snapping at people you love, and you cannot think why. Your periods have turned unpredictable. Nobody around you mentions it, and you wonder if something is wrong with you. For many women in their 40s, this is perimenopause, and it can touch the mind as much as the body.

This article explains what perimenopause is, how it can affect mood, anxiety and sleep, how to tell it from ongoing depression, and what may help. It cannot diagnose you. A doctor can assess your symptoms and rule out other causes.

What perimenopause is

The World Health Organization describes perimenopause as the transition leading up to menopause. It usually begins with changes in the menstrual cycle and ends one year after the final period. Menopause itself is recognised after 12 months without a period, and most women reach it between 45 and 55. Pregnancy is still possible during perimenopause, so contraception remains a question for your doctor until 12 months after the last period.

Cleveland Clinic says perimenopause usually begins in the mid-40s, but it can start as early as the mid-30s or as late as the mid-50s, and lasts about four years on average, sometimes up to eight. The NHS says symptoms usually last 7 to 9 years, sometimes longer, and can change over time. Experiences differ a great deal. Some people have very few symptoms.

When does menopause happen in India?

The Indian Menopause Society's 2026 guidelines cite national survey data (NFHS) giving a national mean age at menopause of 46 years in India. A 2025 meta-analysis of Asian studies in the Journal of Mid-life Health found that Indian studies reported average ages ranging from 44.92 to 47.9 years, with several clustering around 46.2. The authors report that smoking, a stressful and physically demanding workload and an early first period were linked with earlier menopause. These are averages across groups, so your own timing may differ. If your periods stop before 40, speak to a doctor.

Mood, anxiety and sleep

The NHS lists mood swings, low mood or depression, anxiety, trouble sleeping and brain fog among symptoms of the transition. It says anxiety can be linked to hot flushes and to the irritability and stress caused by poor sleep, and that mood symptoms can feel worse when you are tired. The Indian Menopause Society guideline describes a bell-shaped pattern in which mood and anxiety symptoms rise in early perimenopause, peak in the late transition, and tend to improve within one or two years after the final period.

Some of the best research on depression comes from long-term studies. In a study published in Archives of General Psychiatry in 2006 (Freeman and colleagues), women with no history of depression were followed for about eight years. High scores on a depression questionnaire were more than four times as likely during the menopausal transition as before it (odds ratio 4.29, 95% CI 2.39 to 7.72). A 2015 trial in JAMA Psychiatry by Schmidt and colleagues, in women who had had depression in perimenopause, begins by stating that perimenopause is accompanied by an increased risk of new and recurrent depression. The Indian Menopause Society guideline also states that the risk is most significant in the late reproductive and early menopausal transition phases, when estrogen levels are unstable. Most women do not develop depression, and these are group findings, not a prediction for you.

Hormones are only part of the picture. The same guideline lists hot flushes, disturbed sleep and psychosocial stressors such as caregiving, occupational pressures and midlife role changes as contributing factors. A prior history of depression or anxiety also increases vulnerability.

Is it perimenopause or depression?

It can be both, and it can be hard to tell. Mood swings, tearfulness and irritability that rise and fall with sleep, hot flushes or your cycle may be part of the transition. Depression involves a low mood or loss of interest lasting most of the day, nearly every day, for at least two weeks, often with hopelessness, guilt or loss of enjoyment. The Indian Menopause Society says mood symptoms are typically transient or moderate but need treatment if they last beyond two to four weeks or affect daily functioning or relationships.

Only a doctor can tell the two apart, and treatment for one does not rule out help for the other. You do not have to decide yourself. If you are unsure, it is reasonable to ask for an assessment.

What may help

Sleep and daily rhythm

The NHS suggests keeping regular sleep routines, getting plenty of rest, and keeping your bedroom cool with light clothing to ease night sweats. It also says that cutting down on caffeine, alcohol and spicy food may help with hot flushes for some people. Disrupted sleep and mood feed each other, so improving sleep may help both.

Movement and relaxation

The NHS recommends regular exercise, including weight-bearing activity such as walking or dancing, and relaxing practices such as yoga, tai chi or meditation. These may help mood and stress, and weight-bearing exercise also helps protect bones. Many people find a short daily walk easier to keep up than a big plan.

Talking therapy

The NHS says cognitive behavioural therapy (CBT) can help with low mood, anxiety and sleep problems linked to this stage. The Indian Menopause Society guideline lists counselling, stress reduction and CBT among its management steps for mood symptoms. CBT works on how thoughts, feelings and habits affect each other. You can also read our article on therapy in India to find a professional.

Medical options to discuss with your doctor

The WHO says both hormonal and non-hormonal treatments can ease menopause symptoms, and the best choice depends on your medical history and preferences. The NHS says that for low mood, depression or anxiety linked to this stage, you may be offered antidepressants, and it advises talking to a doctor, nurse or pharmacist about hormone replacement therapy (HRT) and other options. The Indian Menopause Society says individualised menopause hormone therapy may be considered when mood symptoms are tied to hormone fluctuation and there are no reasons to avoid it, and that antidepressants are effective for moderate to severe or persistent depression. These treatments are not right for everyone, and they have benefits and risks. A doctor, ideally a gynaecologist or physician comfortable with menopause care, can go through these with you. Please do not start, change or stop any medicine on your own.

Track what is happening

Keep a simple note for a few weeks: your periods, sleep, hot flushes, mood on a scale of 1 to 10, and big stresses. Patterns can show whether symptoms follow sleep loss, your cycle or something else, and the record makes a short doctor's visit more useful.

The silence around menopause

The WHO notes that menopause is often not discussed in families, workplaces or healthcare settings, and that women may feel embarrassed or ashamed to raise their symptoms. Many women may simply be told 'this is normal at your age' and carry on. The Indian Menopause Society cites survey data in which nearly 82% of Indian women believe menopause affects workplace well-being and career, and 18 to 26% work through symptoms or take time off without telling anyone.

Menopause is a natural transition, but 'natural' does not mean you have to suffer in silence. Talk to someone you trust: a friend, a sister, a colleague going through the same thing. If it helps, you can share the NHS or WHO pages with family so they can see this is a recognised health matter.