Mould Exposure: Symptoms, Root Causes & Why Some People Can’t Eliminate It
By Joana Amram — Registered Nutritional Therapist (ANP/APENB), CNM London
Gut health & whole-person care · Lisbon & online · joana-amram.com
Two people can live in the same damp home. One feels completely fine. The other is exhausted, foggy, reacting to foods they used to tolerate, and can't work out why. If you suspect mould is affecting you — and you've struggled to be taken seriously — this is for you.
Why mould affects people so differently
Mould produces compounds (including mycotoxins) that some people clear easily and others don't. The difference often comes down to how well your body's drainage and detox pathways are working, the state of your gut and immune system, and your individual susceptibility. This is why mould sensitivity is so often missed: the exposure is shared, but the response is deeply individual.
Common signs people report
Mould-related symptoms are notoriously wide-ranging, which is part of why they're dismissed. People commonly describe persistent fatigue, brain fog and poor concentration, new or worsening sensitivities to foods and smells, sinus and respiratory symptoms, headaches, and digestive changes. Because these overlap with so many other things, mould is rarely the first thing considered.
Why some people can't seem to clear it
Recovery often stalls for understandable reasons: ongoing exposure that hasn't been identified and removed (the single most important step), overburdened drainage pathways, an already-stressed gut and immune system, and an imbalanced microbiome that makes the whole system less resilient. When the underlying terrain is struggling, the body has a harder time processing and clearing what it's exposed to.
The gut connection
The gut plays a central role in how the body handles environmental burdens — through the microbiome, the gut barrier, and immune regulation. When the gut is already compromised, sensitivity to things like mould can be amplified. This is why mould-related symptoms often sit alongside the kind of issues described in tracing the root cause of "never been well since".
A whole-person approach
This is complex, individual work, and the foundation is non-negotiable: identifying and removing the source of exposure, ideally with a qualified building or environmental professional. From there, supporting the gut, drainage pathways, nervous system and overall resilience — tailored to you, and alongside your doctor. Mould-related illness is an area where working with appropriate medical support matters.
If you suspect mould is part of your picture, let's talk it through. No cost, no obligation.
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You can read more about how I work with complex, whole-person cases on my services page.
This article is for educational purposes and is not medical advice. Always work with your doctor for diagnosis and before making changes to your care, especially for mould-related illness.
Frequently asked questions
Why does mould affect me but not the people I live with?
Susceptibility to mould varies enormously, depending on how well your body's drainage and detox pathways work, your gut and immune health, and individual factors. Shared exposure doesn't mean shared response.
What are common symptoms of mould exposure?
People commonly report fatigue, brain fog, new sensitivities, sinus and respiratory symptoms, headaches and digestive changes. The wide range is part of why it's often missed.
Why can't I seem to recover from mould?
Recovery often stalls because of ongoing, unidentified exposure, overburdened drainage pathways, or an already-stressed gut and immune system. Removing the source is the essential first step.
Can I work with you online if I'm not in Lisbon?
Yes. I support clients online in English, Portuguese, Spanish and French, as well as in person in Lisbon and Estoril.
Related reading
– Tracing the Root Cause: "Never Been Well Since"
– Leaky Gut: What It Is, Causes & How to Support Repair