I’m a 34-year-old marketing manager, and I’ve had gut issues for as long as I can remember.
And here’s what you should definitely be aware of…
The planning that wears you down:
Where the bathrooms are, what’s safe to eat before a long meeting, whether to risk breakfast at all before a train. I’ve cancelled on people at the last minute more times than I can count, and I’ve stopped explaining why, because “my stomach” sounds like nothing and feels like everything.
I was officially diagnosed with Irritable Gut at 27, and since then I’ve honestly tried everything.
Gluten-free, dairy-free, low-FODMAP with a dietitian, probiotics, peppermint oil, and every supplement and tea the internet swears by. I’ve had the colonoscopy, the blood tests, the breath test. Everything came back “no significant findings.” A few things helped for a week or two, then the bloating and the unpredictability always crept back.
And there’s a part nobody really talks about, the constant low-level stress around eating, and the way it quietly leaks into your social life and your sense of yourself.
I’d resigned myself to this being permanent when a gastroenterologist said something that stuck with me.
He told me the recent research on chronic gut issues points to the gut-brain axis, and that the main highway between the two is the vagus nerve. “Your gut isn’t broken,” he said. “Your nervous system might just be telling your gut the wrong things.”
Two weeks later I’d ordered a vagus nerve stimulation device. The 30-day money-back guarantee was what made me actually click buy. If nothing happened, I’d return it.
I kept a journal, day by day, no filter.
Here’s what actually happened.
Day 1–4: My Stomach Was Still My Stomach
It came in a plain white box.
I clipped it onto my left ear while waiting for my coffee to brew.
A faint tingle, not unpleasant, just present.
For three days, my gut did exactly what it always did: the morning urgency, the mid-morning bloating, the post-lunch knot in my stomach.
Nothing changed and it’s almost like I was already drafting the refund email.
On day four, I read the manual properly and realised I’d been doing short sessions. The recommended duration was at least thirty minutes, and I’d been doing fifteen. So I wore it for an hour while working at my desk that morning.
Around the forty-minute mark, I noticed something I hadn’t expected.
My shoulders weren’t around my ears, my jaw wasn’t clenched, and the tight little ball of tension I’d been carrying in my upper abdomen for as long as I could remember had eased.
I sat there for a minute, palm on my stomach, trying to make sure I wasn’t imagining it.
That’s the moment I stopped thinking about returning it.
Day 8–12: The Morning That Didn't Crash
By the second week, I was doing two sessions a day, forty-five minutes in the morning while answering emails, and an hour in the evening while reading on the sofa.
The mornings had always been the worst part of my day.
I’d get up, make coffee, get through an hour of urgency, eventually settle down enough to leave for work, but never feel fully right.
On day ten, I had a morning that didn’t crash. I made my coffee, ate a slice of toast, and didn’t have to plan my next thirty minutes around the bathroom. I sat down at my desk at 8:30 and just worked, like a person.
I didn’t trust it. I waited for the other shoe to drop. By 11 AM I realised the other shoe had not, in fact, dropped.
The next day was similar.
The day after, I had one bad morning, but it was shorter than usual and didn’t bleed into the rest of my day.
The bloating started easing around day eleven. Not gone, but the eight-months-pregnant look I’d get after lunch had dialled down to something closer to a normal stomach.
Stress and gut function are tightly linked.
The nervous system that runs your fight-or-flight response is the same one that controls how your gut moves, what it secretes, and how sensitive it is to discomfort. When that system gets stuck on alert, the gut tends to get loud.
I’d known this intellectually for years. It was different to feel it happening in reverse.
Day 16–22: Eating Out Without Doing the Math
Sleep had also been a casualty of all of this.
Stomach upset, lying awake, dehydration, the cycle. By week three, I was sleeping through the night for the first time and I genuinely can’t remember how long.
But the bigger thing was social.
I went out for dinner on a Friday with friends, ordered what looked good rather than what was safe, and didn’t spend the meal doing internal maths about what was going to happen later. I had wine. I had bread.
I didn’t pay for it the next day.
That was the moment I knew this wasn’t a coincidence.
Saturday afternoon I went on a long walk without scoping out where the public bathrooms were first. Sunday I cooked a meal that included onion and garlic, two things I’d been avoiding for two years because of my FODMAP work. I made it cautiously, ate a small portion to see what would happen, and what happened was nothing.
I cried a little bit, honestly.
Years are a long time to be afraid of food.
Day 23–26: I Went Down a Research Rabbit Hole
By week four, I’d stopped wondering whether this was doing something and started wanting to understand why.
I gave myself a Saturday afternoon with a coffee and a stack of open browser tabs.
Here’s what I pieced together:
The vagus nerve is the body’s main parasympathetic pathway, which is the “rest, digest, recover” system.
The “digest” part is not metaphorical.
The vagus nerve directly connects the brain to the digestive system.
It plays a role in how fast food moves through your gut, how much acid your stomach makes, how sensitive your gut feels to normal sensations, and how the immune system in your gut responds to what’s there.
About 80% of its fibres are afferent, meaning they send signals up to the brain. Only 20% send signals down. So your gut is constantly talking to your brain, and most of the conversation goes upward.
When stress, illness, or just years of chronic strain push the nervous system into a stuck “on” state, the parasympathetic side can have a harder time doing its job.
Digestion gets disrupted.
The gut can become louder and more reactive.
This is one part of why so many people with chronic gut issues also struggle with anxious thoughts, poor sleep, and ongoing stress. They’re often downstream of the same underlying state.
The technology I was using is called Nurosym.
It’s an auricular vagus nerve stimulation device that sends mild electrical signals through a branch of the vagus nerve that runs close to the skin in the outer ear. The signal travels up the nerve to the brainstem.
This kind of stimulation has been studied in scientific studies, reviews, and significant analyses.
A few numbers from that body of research stood out:
- A 61% increase in vagal activity
- An 18% increase in HRV over a study period
- A 35% reduction in stress-response reactivity
- Improvements in reported sleep quality (+ 30%)
- Reductions in reported tiredness and improvements in energy (- 48%)
I won’t pretend I read every paper, but it was enough to convince me that what I was experiencing wasn’t placebo, and that there was a mechanism behind it.
Day 30: What Changed
I’m still 34, and I still have a sensitive system. Some mornings are still off, and I’m still careful about what I eat the day before a big meeting or a long train journey.
But:
- The bloating that used to be daily is now maybe once a week
- Most mornings I'm not planning my day around my stomach anymore
- I can eat onion, garlic, and a normal amount of dairy without paying for it
- I'm sleeping through the night, which I now realise I hadn't done properly in years
- I went out to dinner four times this month and ordered from the actual menu
And the one I really didn’t expect, I’m not anxious about food anymore. I didn’t realise how much background space that anxious thoughts had been taking up until it wasn’t there.
Why Your Body Stays Stuck (And How This Helps)
The vagus nerve is the longest cranial nerve in the body.
A huge part of what the vagus nerve does is help regulate digestion. Stomach acid, gut motility, how sensitive your gut feels to normal sensations, and how the gut and immune system interact.
When the body has been running in stress or survival mode for a long time, the parasympathetic side can have a harder time doing its job. The “go-go-go” system takes over, and the digestive system never quite gets the signal to relax and work normally.
This is one reason chronic gut issues so often travel alongside anxious thoughts , poor sleep, and low energy.
They can all be downstream of the same underlying state, a nervous system that’s stopped switching off properly, even when there’s nothing to be on alert for.
Auricular vagus nerve stimulation works by sending mild electrical signals through a branch of the vagus nerve that runs close to the skin in the outer ear.
The signal travels up the nerve to the brainstem, which can help support the parasympathetic side of the nervous system.
It’s not a probiotic, and it’s not a digestive enzyme…
It’s about giving the nervous system that runs your gut the input it’s been quietly missing.
A Note on the Practical Side
If you’re thinking of trying one, here are a few things I wish someone had told me.
I paid full price, around €700; so it’s not cheap.
I later found out they run a remote research study you can sign up for. You fill out some forms, share your data, and you get around €40 off. I wish I’d known before I clicked buy.
The other thing that made me commit was the 30-day money-back guarantee. If it hadn’t worked, I’d have sent it back, and that’s what made me click buy in the first place.
You wear it clipped to your ear, and sessions run from 15 minutes up to two hours.
I do an hour in the morning while working and forty-five before bed. The sensation is a faint tingle, not painful. You can wear it while reading, watching TV, or working at a laptop.
My Honest Take
I’ve spent more money than I’d like to admit chasing whatever was wrong with my stomach. Most of it disappointed me eventually.
This one didn’t.
It hasn’t given me a cast-iron stomach, because that’s not how this works. But it’s given me back the ability to eat a meal without planning around it, sleep through the night, and walk into a restaurant without scanning the menu for safety first.
For the first time in a decade, my gut feels like a part of me instead of a thing I’m managing.
That’s the most honest summary I can give.
This blog post aims to be informational and should not replace professional health advice. Always consult with a health professional for personalised advice.
References
- Borges, U., Laborde, S., & Raab, M. (2019). PLOS ONE, 14(10), e0223848.
- Cao, R., et al. (2022). Journal of Medical Internet Research, 24(1), e27487.
- Peuker, E. T., & Filler, T. J. (2002). Clinical Anatomy, 15(1), 35–37.
- Redgrave, J., et al. (2018). Brain Stimulation, 11(6), 1225–1238.
- Yap, J. Y. Y., et al. (2020). Frontiers in Neuroscience, 14, 284.
- Task Force of the European Society of Cardiology. (1996). Circulation, 93(5), 1043–1065.
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