How common is mycotoxin exposure?
Mycotoxins come from mold. And mold is almost everywhere — usually exactly where you'd never look. Here's what the data actually says.
~50% of U.S. homes have had dampness or mold.
Not a rare problem limited to old or visibly-damaged houses — roughly half of all homes.
Lawrence Berkeley National Lab (~47% population-weighted average); WHO estimates 10–50% of indoor environments.
Hidden Most of it, you can't see.
Mold grows behind drywall, on the back of ceiling tiles, under carpet, and inside ductwork — and spores are in the air and dust of every building. “My house looks clean” proves nothing.
U.S. EPA, A Brief Guide to Mold, Moisture and Your Home.
85% of U.S. office buildings have had water damage. 45% have active leaks.
The places you live and work are wetter than you think.
U.S. EPA Building Assessment Survey and Evaluation (BASE) study.
Almost all of the 119 million U.S. homes experience leaks, flooding, or excess dampness at some point.
Past water damage you've forgotten about — or never knew about — is enough.
National Academies (Institute of Medicine), Damp Indoor Spaces and Health (2004).
1 in 5 U.S. asthma cases is tied to dampness and mold at home — about 4.6 million people.
This is the proof mold genuinely harms health — and asthma is just the effect that's been measured most rigorously. It doesn't stop at the lungs.
Mudarri & Fisk, U.S. EPA scientists, Indoor Air (2007), peer-reviewed.
Way more than asthma. People exposed report symptoms across nearly every system — which is exactly why it gets missed for years.
- Crushing fatigue
- Brain fog
- Headaches
- Memory problems
- Sinus congestion
- Joint & muscle pain
- Anxiety & mood changes
- Dizziness
- Racing heart
- Gut & digestion issues
- Skin rashes
- Tingling & numbness
Symptom associations commonly reported in published research — educational, not a diagnosis.
Damp, mold-prone buildings are everywhere. The exposure is usually invisible. And it can affect far more than your lungs. Yet it's almost never investigated as a cause.
If you've been sick for years and told your labs are “normal,” this is the question no one ever asked — and the one we can actually answer. We measure your immune system's reaction to mycotoxins, so you finally find out.
Sources
- Lawrence Berkeley National Laboratory — Prevalence of Building Dampness (~47% U.S. average)
- WHO — Guidelines for Indoor Air Quality: Dampness and Mould (2009)
- U.S. EPA — A Brief Guide to Mold, Moisture and Your Home
- Mudarri & Fisk — Public health and economic impact of dampness and mold, Indoor Air (2007)
- U.S. EPA — Building Assessment Survey and Evaluation (BASE) study
- Institute of Medicine / National Academies — Damp Indoor Spaces and Health (2004)