Why Anxiety Feels So Much Worse in Perimenopause — And What Your Body Is Actually Trying to Tell You

There is a particular kind of anxiety that arrives in perimenopause that is unlike anything most women have felt before.

It doesn't always look like the anxiety they recognise. It's not always the racing heart before a presentation, or the worry spiral the night before something important. This anxiety is stranger, more pervasive, and far more unsettling — because it seems to come from nowhere. A sudden wave of dread on an ordinary Tuesday morning. A sense of impending catastrophe with no identifiable cause. A heart that hammers awake at 3am for no discernible reason.

And then comes the thought that compounds everything: What is wrong with me?

I want to answer that question. Not with reassurance, but with science — and with the kind of honesty that I believe every woman in this phase of life deserves.

The Biology Behind the Fear

To understand anxiety in perimenopause, we need to go into the brain. Specifically, to a small almond-shaped structure called the amygdala — your brain's threat-detection system. It is ancient, fast, and not particularly rational. Its job is to scan the environment for danger and sound the alarm before your conscious mind has time to catch up.

Oestrogen, it turns out, is one of the amygdala's most important regulators. It acts as a natural brake on the fear response — keeping the alarm system calibrated, dampening reactivity, and helping the brain return to a state of safety after stress.

As oestrogen levels fluctuate in perimenopause — sometimes dramatically, day to day and week to week — that brake becomes unreliable. The amygdala becomes more easily triggered and harder to settle. The nervous system, already under hormonal pressure, shifts into a state of heightened vigilance.

This is not anxiety as a psychological weakness. This is anxiety as a neurobiological consequence of hormonal transition — and it is happening in a brain that is doing exactly what it was designed to do. It is trying to protect you.

Progesterone tells a similar story. Often called the "calming hormone," progesterone binds to GABA receptors in the brain — the same receptors targeted by anti-anxiety medications. As progesterone declines in perimenopause, this natural sedating effect diminishes. The result is a nervous system with fewer of its own natural buffers against stress, overwhelm and fear.

When you add disrupted sleep — itself a consequence of fluctuating hormones — into this picture, the effect compounds. A sleep-deprived amygdala is up to 60% more reactive to perceived threat. The anxiety that might have been manageable in a rested brain becomes consuming in an exhausted one.

You are not imagining it. Your brain chemistry has genuinely changed.

The Nervous System Under Siege

I work extensively with the body in my practice — the science of how the autonomic nervous system shifts between states of safety, mobilisation and shutdown. And what I see in women in perimenopause, again and again, is a nervous system that has lost its flexibility.

A healthy nervous system moves fluidly — from activation back to rest, from stress back to calm. It has what we call good "vagal tone": the ability to regulate itself, to come down from high alert, to feel safe in the body even when things are difficult.

Chronic hormonal fluctuation — compounded by poor sleep, high life demands, and an absence of genuine rest — gradually erodes this flexibility. The nervous system gets stuck in a state of chronic low-grade activation. The window of what feels tolerable narrows. Things that wouldn't have touched you five years ago now feel overwhelming. Small stressors trigger large responses.

This is not a character defect. This is a dysregulated nervous system that has been carrying too much for too long, in a body that has had its biochemical scaffolding quietly removed.

The panic attacks some women experience for the first time in perimenopause fit this picture exactly. A sensitised amygdala. A nervous system with diminished buffering. One trigger — a moment of physical sensation, a stressful thought, even the adrenaline surge of a hot flush — and the alarm system fires in full. The body floods with cortisol and adrenaline. Heart racing, chest tight, breath shallow, the overwhelming and terrifying sense that something is catastrophically wrong.

And then the fear of the fear begins. Which is often, in my clinical experience, the harder thing to treat.

When We Try to Think Our Way Out

Here is something I see with almost every intelligent, high-functioning woman who comes to me with anxiety: she is trying, desperately, to think her way out of it.

She is analysing the thoughts. She is googling the symptoms. She is making lists, contingency plans, worst-case-scenario preparations. She is trying to resolve, at the level of the mind, something that is happening in the body.

And it is not working. Not because she isn't trying hard enough — she is trying enormously hard. It isn't working because anxiety, particularly the kind driven by a dysregulated nervous system, is not primarily a cognitive problem. It is a somatic one.

This is one of the most important reframes I offer women in my work, because it changes everything about where we focus our attention and energy.

In Acceptance and Commitment Therapy, we talk about the futility — and the cost — of experiential avoidance: the relentless attempt to not feel the thing we're afraid of feeling. Every strategy deployed to escape anxiety — the reassurance-seeking, the over-planning, the avoidance of triggers — teaches the nervous system that the anxiety was, in fact, dangerous. That it required escaping from. And so it grows.

The counterintuitive truth, backed by decades of research and by everything I have seen in clinical practice, is that the path through anxiety is not around it. It is through it, with the right support, the right understanding, and — crucially — a body that has been given the physiological tools to move through activation and return to calm.

What the Anxiety Is Actually Asking For

I have come to believe, both as a clinician and as a woman, that anxiety in this phase of life is rarely just a malfunction. It is, at its deepest level, a communication.

It is the body saying: I am overwhelmed. I am under-resourced. I have been carrying too much without enough restoration. Something needs to change.

In compassion-focused therapy, we work with what I think of as the "threat system" — the ancient, evolutionarily wired part of us that responds to danger with fear, self-criticism and hypervigilance. In perimenopause, this system is, as we've explored, neurologically primed to be louder. And for many women, it is amplified further by a critical inner voice that interprets the anxiety as failure.

I should be able to handle this. Other women manage. What is wrong with me?

That self-critical response — as understandable as it is — activates the very same threat system that generated the anxiety in the first place. It is petrol on the fire.

Compassion — not as a soft concept, but as a neurobiological intervention — activates the soothing system: the branch of the autonomic nervous system associated with safety, connection and genuine calm. When we learn to bring warmth toward our own experience — to meet the anxiety with curiosity rather than criticism, with care rather than contempt — we are literally changing the neurochemical environment in which that anxiety lives.

This is not bypassing the hard work. This is the hard work.

Coming Back Into the Body

The most powerful tools I use with women navigating anxiety in perimenopause are not cognitive. They are somatic — body-based practices that speak directly to the nervous system in the language it understands.

Extended exhale breathing — where the out-breath is longer than the in-breath — directly activates the vagus nerve and triggers a parasympathetic response. Within minutes, heart rate slows, cortisol begins to drop, and the amygdala's alarm signal quietens. This is not relaxation. This is physiological regulation — a skill that can be practised and strengthened like a muscle.

Yin yoga and slow, deliberate movement signal safety to a body that has been braced. The sustained, gentle holds of yin communicate to the nervous system that there is no threat requiring mobilisation — that it is safe to release, to soften, to rest.

Mindfulness practice, done consistently, literally changes the structure of the brain. The prefrontal cortex — the seat of perspective, rational thought and emotional regulation — thickens with practice. The amygdala becomes less reactive. The nervous system's window of tolerance widens. This is not metaphor. This is measurable neuroscience.

And beneath all of these practices is something that I believe is the most underrated intervention available to women in perimenopause: genuine, unscheduled stillness. Not the collapse of exhaustion. Not sleep stolen between demands. But a chosen, deliberate pause — where the nervous system is given permission to simply be, without performing, without producing, without being needed by anyone.

For many of the women I work with, this is the most radical and terrifying thing I ask of them. And the most transformative.

You Are Not Losing Your Mind. You Are Being Called to Listen.

Anxiety in perimenopause is not a sign that you are falling apart. It is a sign that your body — intelligent, adaptive, and extraordinarily honest — is asking to be heard.

It is asking for less cortisol and more calm. For less override and more attunement. For less white-knuckling through and more willingness to feel what is actually here.

The women who move through this transition with the most grace are not the ones who suffered least. They are the ones who learned to stop fighting their own nervous systems. Who understood what was happening inside them. Who found the tools — and the space — to come back to themselves.

That quiet place of safety exists inside you. I know this not only as a clinician, but as a woman who spent years unable to find it — and who eventually did.

It has not gone anywhere. It is simply waiting for you to pause long enough to find your way back.

Dr Maria-Elena Lukeides is a Clinical Psychologist specialising in women's mental health through the perimenopause and menopause transition. She works at the intersection of neuroscience, compassion-focused therapy, breathwork and mindfulness — and runs Pause with a Purpose, an immersive retreat for women in this transition.