Your Body Is Not Betraying You. It's Doing Exactly What It Was Designed to Do.
- Eugenie Ducatel
- May 10
- 7 min read
By Eugénie Ducatel
Here I am with Angela Graham at Wild Heart Yoga, just after class. Happy glow. Yoga is part of my mental health. You will see how mental drain impacts our bodies.
I want to ask you something before we go any further.
Think about the last time you felt truly overwhelmed. Not just "busy" overwhelmed. I mean the kind where you sat down to do one thing and couldn't remember what it was. Where you snapped at someone you love over something small. Where your to-do list had a to-do list. Where you collapsed into bed exhausted — and still couldn't sleep.
Did you blame yourself?
Did some part of you whisper: I should be able to handle this. Other women manage. What's wrong with me?
I need you to hear this: nothing is wrong with you.
What you were experiencing in that moment was not weakness. It was not poor time management. It was not a character flaw.
It was biology. And once you understand the science of what happens inside your body when you're running on overwhelm, I promise — you will never speak to yourself the same way again.
Let's Start With What "Mental Drain" Actually Is
When you are juggling multiple responsibilities, your brain reads that as a threat.
Not a lion-in-the-jungle threat. But a persistent, low-grade threat signal — the kind that says: there is too much to track, something important might fall apart.
In response, your hypothalamus (the brain's command centre) fires up what scientists call the HPA axis — your hypothalamic-pituitary-adrenal pathway. It's your ancient alarm system. And it does what alarm systems do: it releases cortisol.
In small doses, cortisol is your friend. It sharpens your focus. Gets you across the finish line. Helps you deliver that presentation even when you didn't sleep well.
But when the alarm never gets turned off — when the demands keep piling up, day after day — cortisol stops helping and starts harming.
What Chronic Cortisol Does to Your Brain
Here's what happens inside your head when stress becomes your baseline:
Your hippocampus — the part of your brain responsible for memory — gets impaired. This is why you walk into a room and forget why. Why you re-read the same email three times and still can't retain it. You're not losing your mind. Your brain is flooded.
Your amygdala — your emotional processing centre — becomes hypersensitized. Small things feel enormous. You find yourself crying over a spilled coffee or snapping at your daughter over dishes. That's not you being "too emotional." That's a brain running on cortisol.
And deep in your prefrontal cortex — the part of you that plans, decides, and thinks clearly — a metabolic byproduct called glutamate builds up. When it accumulates, your brain deliberately slows its own activity to protect itself. That foggy, can't-think, where-was-I feeling? That is your brain applying the brakes. Not failing. Protecting.
"Is This Menopause — Or Am I Losing My Mind?"
I want to stop here and speak directly to something.
If you are a woman in your 40s or 50s, there is a good chance you have experienced brain fog — and blamed it on perimenopause or menopause.
The forgetting of words mid-sentence. The walking into a room and standing there, blank. The feeling that your thoughts are moving through wet concrete. The moments where you wonder, privately and with real fear: Is this just aging? Is something wrong with my brain? Is this who I am now?
Here is what I want you to know: brain fog is not a menopause sentence. In most cases, it is a stress response — and it is reversible.
Yes, declining estrogen plays a role. Estrogen is deeply neuroprotective — it supports the growth of synaptic connections, fuels the brain's glucose metabolism, and promotes serotonin and dopamine production. When it fluctuates in midlife, cognition can be affected.
But here is what most women are never told: chronic cortisol suppresses estrogen production at any age. Which means that a woman in her 40s running on prolonged overwhelm is getting hit twice — her estrogen is already shifting, AND her stress hormones are actively dismantling what remains of its protective effects on the brain.
Add to that the glutamate buildup we talked about earlier — the one that makes your prefrontal cortex slam the brakes — and the inflammatory molecules that chronic stress releases into the bloodstream, which can cross the blood-brain barrier and directly disrupt neural communication. Add the fact that stress-depleted progesterone can no longer convert into the calming neurosteroid that quiets your nervous system. And add the incomplete, fractured sleep that prevents your brain from flushing its own metabolic debris overnight.
That is not menopause. That is a nervous system that has been in emergency mode for too long, inside a body that was never given permission to recover.
The fog is real. The exhaustion is real. But the story that it is permanent — that it is simply who you are now — that part is not true.
Your brain wants to come back. It is waiting for the signal that the emergency is over.
And only you can send that signal.
Here's Where It Gets Personal for Women
I want to talk directly to you now, because the research on this is not talked about nearly enough.
Women experience the physiological effects of chronic stress differently than men. Studies show that we are more likely to sustain a low-grade, continuous stress activation — rather than the spike-and-recover pattern more typical in men. And here's the hard truth: that slow, chronic burn is more damaging to your cardiovascular system than an acute spike.
Chronic cortisol elevation in women is directly linked to:
Weight gain — especially around the belly. Visceral fat (the deep abdominal fat around your organs) has a high density of cortisol receptors. When cortisol is elevated, it instructs your body to store fat there. It spikes insulin. It suppresses leptin — the hormone that tells you you're full — and increases ghrelin, the hormone that says I'm hungry, and I want sugar right now.
This is why stress eating is not a willpower failure. It is a hormonal instruction. Your body is literally asking for quick energy because it believes there is an emergency.
And here's the layer that particularly affects women in perimenopause and menopause: estrogen normally tells fat to go to the hips and thighs. As estrogen fluctuates and declines, cortisol's signal to the belly goes largely unopposed. The belly weight that appears during midlife, seemingly out of nowhere, even without changes in diet? Often — it's this.
Heart health. Cortisol constricts blood vessels and raises blood pressure. It promotes systemic inflammation that slowly damages arterial walls. It raises LDL cholesterol and lowers HDL. And because cortisol also suppresses estrogen production — and estrogen has significant cardioprotective effects — chronic stress creates a double blow to women's hearts.
There is even a condition called Takotsubo syndrome — known as "broken heart syndrome" — where intense emotional stress causes the left ventricle of the heart to temporarily malfunction, mimicking a heart attack. Women experience this at a rate nearly nine times higher than men.
Your heart is not dramatic. It is responding to a real biochemical storm.
Why Rest Alone Doesn't Fix It
Here is something that surprised me when I first learned it.
Cortisol has a half-life of about 60–90 minutes in your bloodstream. That means even after you stop doing the stressful thing, the chemistry lingers. Your nervous system doesn't receive an "all clear" just because your laptop is closed.
And the glutamate buildup in your prefrontal cortex? That clears primarily during deep, slow-wave sleep — when your brain activates what researchers call the glymphatic system, literally flushing metabolic waste. Poor sleep means accumulated "neural debris." And chronic stress disrupts the very sleep that would restore you.
This is the trap so many of us live inside: too depleted to rest properly, too sleep-deprived to recover, too cortisol-flooded to think clearly enough to change the pattern.
So What Actually Works?
Real physiological reset — the kind that signals to your HPA axis that the emergency is over — requires something specific.
Not just distraction. Not just a glass of wine or scrolling. Your nervous system needs actual down regulation signals:
Slow, deliberate breathing — exhale longer than your inhale. This directly activates the parasympathetic nervous system, your "rest and restore" mode.
Movement that is not adrenaline-spiking — a walk in nature, gentle yoga, cycling at a pace where you can still talk.
Genuine social connection — laughter, being seen, being heard. This releases oxytocin, which directly counters cortisol.
Consistent sleep rituals — your brain needs darkness, coolness, and a predictable wind-down to enter the deep stages where restoration happens.
Joy — and I mean this as seriously as I mean the sleep. Moments of genuine pleasure, play, and lightness lower cortisol measurably. Joy is not a reward for getting everything done. It is medicine.
The Question I Want to Leave You With
You have been working so hard.
Carrying so much. Tracking every need, every appointment, every person's mood, every deadline — often before you have even tracked your own.
Your body has been doing exactly what bodies are designed to do under those conditions. It has been trying to keep you safe.
But here's what your body cannot do for you: choose differently.
Only you can do that.
So I want to ask you — gently, but honestly:
When will you choose YOU?
Not when the kids are older. Not when the project wraps. Not when you've earned it.
Now. This week. In one small, real way.
Because your joy is not a luxury.
Your rest is not laziness.
And the fog, the belly weight, the exhaustion, the emotional fragility — the weight you've been carrying in every sense of that word — does not have to be permanent.
Your brain is not broken. Your hormones are not your enemy. Your body is not failing you.
It has been waiting — patiently, faithfully — for you to slow down long enough to let it heal.
That healing begins the moment you decide you are worth the pause.
It can shift. It will shift. When you do.
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