Menopause and Mental Health: Understanding Mood Changes

If you've been feeling unusually anxious, low, or emotionally fragile in your 40s or early 50s, you're far from alone. Perimenopause — the transitional years leading up to menopause — can profoundly affect mental health, and it's a connection that remains widely under-recognised.

New clinical research published in early 2026 has brought this issue sharply into focus. A study conducted by Liverpool John Moores University and the Newson Clinic found that approximately 1 in 6 women experience suicidal thoughts during the perimenopause and menopause that are not being identified or treated effectively by their healthcare providers.

Why does perimenopause affect mental health?

The hormonal shifts that occur during perimenopause — particularly the decline in oestrogen and progesterone — have direct effects on brain chemistry. Oestrogen plays a key role in the production of serotonin and dopamine, the neurotransmitters most closely associated with mood, motivation, and emotional regulation.

When oestrogen levels fluctuate and eventually decline, many women experience:

• Increased anxiety or panic attacks (often for the first time)
• Low mood, tearfulness, or a sense of emotional numbness
• Brain fog, difficulty concentrating, and memory lapses
• Disrupted sleep, which compounds everything above
• Loss of confidence and a feeling that something is fundamentally “wrong”

The challenge is that these symptoms often appear before the more commonly recognised signs of menopause like hot flushes and irregular periods. This means many women — and their GPs — don’t initially connect the dots.

The neuroscience behind perimenopausal mood changes

To understand why perimenopause can feel so destabilising, it helps to know a little about what oestrogen actually does in the brain. Oestrogen receptors are found throughout the central nervous system — in the hippocampus (memory), the prefrontal cortex (decision-making and concentration), and the amygdala (emotional processing). Oestrogen modulates the production and activity of serotonin, the neurotransmitter most closely linked to mood stability. It also influences GABA, the brain’s main calming neurotransmitter, and noradrenaline, which affects alertness and focus.

During perimenopause, oestrogen levels do not simply decline in a straight line — they fluctuate wildly, sometimes reaching levels higher than normal before dropping sharply. These erratic swings disrupt the neurotransmitter systems that have been finely tuned over decades. In my clinic, I describe it to patients like this: your brain has been running on a particular hormonal frequency for years, and suddenly the signal becomes unpredictable. It is no wonder the effects are so profound.

Is it perimenopause or depression?

This is one of the most common questions I face, and it matters because the treatment approach is different. There are some patterns I look for when trying to distinguish the two:

• Timing and onset: Mood symptoms that begin in the mid-40s in a woman with no significant psychiatric history strongly suggest a hormonal contribution.
• Cyclical pattern: Many women notice their mood worsens in the second half of their cycle or during weeks when periods are irregular — this cyclicity points toward hormones rather than primary depression.
• Associated symptoms: Night sweats, changes in menstrual pattern, joint aches, and reduced libido alongside mood changes make a perimenopausal picture more likely.
• Response to treatment: Women whose low mood is driven by oestrogen deficiency often respond dramatically to HRT within weeks, whereas classic depression typically responds better to antidepressants and talking therapy.

That said, the two are not mutually exclusive. Some women have both, and some women with a history of depression find that perimenopause triggers a relapse. I always take a thorough history before recommending a treatment plan.

What the latest evidence says about treatment

The 2026 research offers compelling data on the effectiveness of hormone replacement therapy (HRT) for menopause-related mental health symptoms. Among women who reported suicidal thoughts at the start of the study, these thoughts reduced by more than 90% after treatment with a combination of oestrogen, progesterone, and testosterone.

Importantly, the updated NHS prescribing guidance now states that HRT should be considered as a first-line treatment for new-onset low mood and anxiety during perimenopause, rather than defaulting to antidepressants. This is a significant shift in clinical practice.

CBT and psychological support for menopausal symptoms

Cognitive behavioural therapy (CBT) has a growing evidence base for menopausal symptoms, and I recommend it more often than you might expect from a gynaecologist. Randomised trials have shown that CBT specifically adapted for menopause can reduce the impact of hot flushes, improve sleep quality, and help women manage anxiety and low mood — whether or not they are also taking HRT. I find it particularly useful for women who cannot or choose not to take hormones, and for those whose mood symptoms have a significant anxiety component. CBT works well alongside HRT, and the two together often achieve more than either alone.

When psychiatric referral is appropriate

While many perimenopausal mood changes respond well to HRT, there are situations where I refer to a psychiatrist or perinatal/menopause-aware mental health specialist. These include: symptoms that do not improve after an adequate trial of HRT (typically three months), severe depression with loss of function or inability to work, active suicidal thoughts or self-harm, symptoms suggestive of bipolar disorder (which can first present during the perimenopause), or a complex psychiatric history that requires specialist input alongside hormonal management. Getting the right support is not a failure — it is good medicine.

Don’t dismiss mood changes as “just menopause”

I want to end with something I feel strongly about. While it is essential to recognise that perimenopause can cause significant mood changes, the reverse trap is equally dangerous: dismissing genuine distress because “it’s just your hormones.” Whatever the cause, if your mood is affecting your relationships, your work, or your ability to enjoy life, you deserve treatment. Not later. Now. I see too many women who have been suffering silently for months or even years because they assumed they simply had to endure it. You do not.

What can you do?

• Track your symptoms: Keeping a symptom diary can help you and your doctor identify hormonal patterns.
• Talk to a specialist: A gynaecologist with experience in menopause management can offer a thorough hormonal assessment.
• Don’t accept “it’s just stress”: While stress can certainly contribute, hormonal changes deserve proper investigation.
• Consider HRT early: When started under 60, HRT is safe for most women and the benefits often extend well beyond hot flushes.
• Ask about CBT: Evidence-based psychological support can be a valuable addition to your treatment plan, either alongside or instead of medication.