The anxiety does not always make sense. It shows up in the middle of an ordinary day, with nothing obviously wrong. Your heart races, your chest tightens, your mind runs through scenarios you cannot switch off. You have tried breathing exercises. You have tried therapy. Some of it helped, for a while. But the anxiety keeps coming back, sometimes stronger, and you are starting to wonder if something else is going on.
Anxiety is often treated as a problem to think your way out of. Reframe the thought, challenge the worry, practise gratitude. For a lot of women, that advice only goes so far, because the anxiety is not only happening in the mind. It is happening in a nervous system that has learned, at a physiological level, to stay on alert.
Does any of this sound like your anxiety?
- Anxiety that appears without a clear trigger, seemingly out of nowhere
- Physical symptoms alongside the anxiety: racing heart, tight chest, nausea, dizziness
- Panic attacks that seem to run on their own schedule
- Anxiety that gets worse around food, social situations, or anything unpredictable
- Feeling wired and exhausted at the same time
- Sleep has become more difficult, falling asleep or waking through the night the new normal
- Therapy, breathing exercises, or medication have helped a little, but the anxiety keeps returning
If that sounds familiar, this page is for you. Anxiety like this is real, and it is not a sign that you are not trying hard enough.
What is driving anxiety that will not settle
The nervous system underlies every system in the body, including the immune system, the gut, and the production and breakdown of histamine. When the nervous system reads chronic threat, several things happen at once:
- Cortisol and stress hormones stay elevated, keeping the body on alert even when nothing is happening right now
- Histamine, the same chemical involved in allergic reactions, is also a neurotransmitter that drives wakefulness and alertness, so a nervous system stuck in threat can keep histamine, and anxiety, running high
- Gut permeability increases, letting more inflammatory signals reach the bloodstream and, in turn, the brain
- The threshold for what counts as a threat keeps dropping, so smaller things trigger the same racing, tight chested response
"Anxiety that will not settle is rarely only in the mind," says Luanne Hopkinson, Clinical Nutritionist. "When I see a woman whose anxiety keeps returning despite therapy and medication, or who has physical symptoms alongside it, racing heart, gut issues, reactions to food, the nervous system is where we look first. Address the nervous system and the whole picture starts to change, not just the anxious thoughts."
Luanne Hopkinson, Clinical Nutritionist
Research in psychoneuroimmunology has consistently shown that the hypothalamic-pituitary-adrenal (HPA) axis, the brain's stress response system, directly influences immune function, gut integrity, and mast cell behaviour. A 2019 review in Frontiers in Cellular Neuroscience confirmed that chronic stress dysregulation is associated with increased mast cell activation and reduced intestinal barrier function. (Traina, Frontiers in Cellular Neuroscience, 2019.)
Anxiety and the nervous system
The stress cascade
One chronically stressed nervous system, six knock-on effects at once.
Tap a number to see what's happening there
The dotted line traces the gut-brain axis, the two-way nerve pathway connecting the gut and the brain.
Cortisol and stress hormones rise
Directly stimulating mast cells to release histamine, and keeping the whole body on alert.
The hormone cascade shifts
A nervous system stuck in chronic stress does not treat every hormone equally. Reproductive and thyroid hormones are often the first to be deprioritised, so oestrogen, progesterone and thyroid hormone output can all shift, with knock-on effects on mood, cycles and energy.
DAO drops and the gut lining loosens
The enzyme that breaks down dietary histamine is dampened by the stress response, and gut permeability increases at the same time. More histamine, food particles and inflammatory bacterial fragments cross into the bloodstream, triggering the immune system. Gut motility slows, the valves in the gut malfunction, and SIBO, reflux, constipation, IBS or bloating can occur.
The autonomic nervous system loses its balance
Heart rate, blood pressure, digestion and temperature control are all run in the background by the autonomic nervous system. A nervous system stuck in chronic stress can struggle to keep that balancing act steady, which is part of why anxiety so often comes with a racing heart or dizziness.
The immune threshold drops
So the body starts responding to smaller and smaller triggers, physical and emotional alike.
Brain fog sets in
Chronic stress draws resources away from memory and focus, showing up as brain fog, trouble finding words, and difficulty concentrating.
The threshold for anxious reactions drops.
Signs this cascade is running
The nervous system layer is often at work when several of these patterns are showing up at once.
The nervous system signature
Not every sign of a dysregulated nervous system looks like anxious thoughts. These patterns often run alongside it, and are worth paying attention to in their own right.
Why therapy or diet changes alone cannot fix it
Your nervous system, gut and mast cells are in constant conversation. When the nervous system reads chronic threat, it does not send one signal at a time. It raises cortisol, suppresses DHEA and progesterone, increases adrenaline, imbalances hormones, loosens the gut lining, lowers the immune threshold, and leaves mast cells more reactive to triggers, all at the same time, which is part of why anxiety can feel so physical. Therapy and thought work alone cannot keep pace with a nervous system stuck in threat mode. Regulating the nervous system, alongside a diet that nourishes the gut microbiome, is what lets the anxiety, and your capacity for daily life, settle.
What this means
These are not signs that your anxiety is untreatable. These are signs the nervous system layer has not been addressed yet.
The HPA axis does not only affect mood. It directly shapes gut integrity and how reactive your whole body becomes.
Sources: Traina, Frontiers in Cellular Neuroscience, 2019, chronic stress leads to mast cell activation and modulates gut permeability, with tight junction proteins reduced in correlation with mast cell activation.
General education only. Not a diagnosis or a substitute for individual clinical advice.
Happy Without Histamine · nutrition + neuroscience
What a different approach to anxiety looks like
Nervous system regulation for anxiety is not about positive thinking. The patterns that drive a chronic threat response are held in subcortical brain structures, not in conscious thought. Shifting those patterns requires working at the level of the nervous system, through approaches that create new neural pathways rather than trying to override existing ones.
The tools Luanne uses in the Happy Without Histamine Method include:
Brain retraining and neuroplasticity
Neuroplasticity is the brain's capacity to form new neural pathways throughout life. Brain retraining uses evidence-based techniques to shift the limbic system out of a chronic threat state. For women whose anxiety has not responded to standard tools, this can directly reduce the reactivity that keeps the threat response switched on.
MAP Rapid Rewire Coaching
MAP (Make Anything Possible) Rapid Rewire Coaching is a form of memory reconsolidation work that Luanne is certified to deliver. MAP Rapid Rewire Coaching works with the subconscious beliefs and emotional patterns that keep the nervous system in protection mode. This is the layer that talk therapy and willpower alone often do not reach.
Somatic practices and vagus nerve support
The vagus nerve is the primary conduit between the nervous system and the gut, immune system, and inflammation response. Somatic practices that support vagal tone, including specific breathwork and body-based regulation tools, directly influence the conditions that drive anxious reactivity.
A 2018 review in Frontiers in Psychiatry examining the vagus nerve's role in psychiatric and inflammatory disorders found that vagal tone and vagal nerve stimulation are linked to measurable changes in inflammatory markers, including TNF-alpha. (Breit, Kupferberg, Rogler and Hasler, Frontiers in Psychiatry, 2018.)
"I see this in session," says Luanne. "The women whose anxiety will not lift are so often shallow breathers, holding tension high in the chest. Once we start working with the vagus nerve directly, through breath, somatic practice and nervous system coaching, the physical symptoms tend to settle before the anxious thoughts do. The body leads, and the mind catches up."
Why both sides of the industry are missing half the picture
There are two camps when it comes to treating anxiety that will not shift, and Luanne sits across both.
The therapy and medication side treats the mind, working with thoughts and neurotransmitter levels. This work matters, and for some people it is enough. But it rarely looks at what is happening in the gut and immune system, the physiological load that keeps the nervous system primed for threat in the first place.
The general wellness advice says manage your stress better, breathe, meditate, get more sleep. When people try that alone and nothing shifts, they often conclude something is wrong with them, because the deeper pattern keeping the nervous system stuck in protection mode has not been addressed.
"Both sides are missing half the picture," says Luanne. "The gut and the nervous system are in constant conversation, and you cannot sustainably calm one without addressing the other. That is the integration this work is built on."
If this sounds like more than anxiety
Chronic nervous system dysregulation rarely stays in one lane. The same pattern driving anxiety that will not settle is also commonly seen alongside histamine intolerance, mast cell activation syndrome (MCAS), POTS, Ehlers-Danlos Syndrome (EDS), ME/CFS, fibromyalgia, and chronic pain.
If any of those are part of your picture too, the nervous system layer is often part of what's going on there as well, alongside whatever else is at play for you.
BrainFood was built as the nervous system layer for exactly this kind of overlap, not only for anxiety. Explore BrainFood to see how BrainFood approaches nervous system regulation across conditions.
Frequently asked questions about anxiety and the nervous system
Is my anxiety physical or is it psychological?
Both, and that is not a contradiction. Anxiety involves real physiological changes, elevated cortisol, altered histamine levels, increased gut permeability, and a heightened immune threshold, alongside the thoughts and feelings you notice. Treating anxiety as only psychological misses half of what is actually happening in the body.
How is this different from therapy or medication?
Therapy and medication typically work with the conscious mind or adjust neurotransmitter levels. Nervous system regulation works at the subcortical level where chronic threat patterns are actually stored. The tools in BrainFood and the Happy Without Histamine Method, including MAP Rapid Rewire Coaching, brain retraining, and specific somatic practices, create change at the level of the nervous system rather than trying to consciously override patterns that are not under conscious control. This is not a replacement for therapy or medication where those are needed. It is an additional layer most approaches miss.
I have tried CBT and breathing exercises and they have not worked. Why?
Most standard anxiety tools work from the top down, brain to body, addressing the conscious mind but not the deeper subconscious patterns that keep the nervous system in threat response. They also tend to miss the bottom-up layer, body to brain. Tools such as somatic work and emotional processing, which are part of BrainFood, are often needed alongside cognitive tools to reach that layer. MAP Rapid Rewire Coaching works with memory reconsolidation at the subconscious level, which is often the layer self-directed approaches cannot reach on their own.
Can anxiety really be connected to histamine intolerance or MCAS?
Yes. Histamine is a neurotransmitter as well as an allergy chemical, and it plays a role in wakefulness and the stress response. A nervous system stuck in chronic threat can drive histamine production up, and elevated histamine can, in turn, feed anxious symptoms. For women with both anxiety and histamine intolerance or MCAS, this is often the same underlying nervous system pattern showing up in more than one way, not two unrelated problems.
Do I need to stop therapy or medication to do nervous system work?
No. Nervous system regulation is designed to work alongside therapy, medication, and any other support you already have in place. It is an additional layer, not a replacement, focused on the physiological patterns those approaches often do not reach.
How long does it take to notice a change?
There is no fixed timeline, and pace differs from woman to woman. What it depends on is how long the pattern has been running, how dysregulated the nervous system has become, and how consistently the nervous system work is paired with the nutritional and gut foundation. For some people changes come quickly. For others, Luanne included, it takes longer. Explore BrainFood to see testimonials from women who have done the program and get a feel for what that can look like.
BrainFood is the nervous system layer of the HWH Method
Self-paced. Evidence-based. Built for the nervous system patterns behind anxiety, histamine intolerance and MCAS.
Explore BrainFood →