Library

Books, podcasts & research

A growing collection of Dr. Grant's writing, interviews, and peer-reviewed presentations on hazardous indoor mold and mycotoxin exposure.

New Release

Indoor Molds: Most Dangerous Health Threats

An Infectious Disease Guide for Your Home and Family

A clear, practical guide for patients and families — how to recognize unsafe indoor conditions, spot the symptoms that may signal exposure, and take real steps to protect your health and your home before it's too late.

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Featured Chapter

The Authorities

Sleuthing Indoor Mold, Mycotoxins, and Mysterious Illnesses

I wrote this book because too many people are getting sick. Needlessly. And they don't know why. Worse still, if they suspect mold exposure and dare to speak up, they're dismissed — or branded as crazy. For years, I was one of them. The truth is, your home, school, workplace, gym, or car could be making you sick. Hidden mold and mycotoxins indoors are real dangers most people don't know about — and completely avoidable.

This book will help you see what most miss. I'll teach you how to look for clues in your body and your environment — what signs to watch for in your health, in your home, and even in your pets — and what steps to take if you think you've been exposed.

My hope for you is simple and sincere: that you and your loved ones are spared needless harm. This book gives you the essential knowledge to protect yourself, your loved ones, and your environment — and take action before it’s too late.

  • Recognize unsafe indoor conditions and suspicious symptoms that may be exposure clues.
  • Understand which medical conditions are more at risk if exposed.
  • Learn simple steps to check your home, protect your body, and keep loved ones safe.
  • Know what works, what doesn't, and when to call for help — avoiding costly damage and harm.
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What's inside Dr. Grant's chapter?

If you've been feeling sick for too long and still don't know why, this chapter gives you the clarity and confidence to finally get answers. You'll learn how to check your home, spot early danger signs, and take real control over your health — and why most doctors miss them.

You'll walk away with clear, simple steps to protect yourself — whether you're a homeowner, renter, parent, or pet owner. No complicated science, just real talk from a doctor who's lived it: how mold works, where it hides, what symptoms to watch for, and exactly when to DIY and when to call in help.

Most people wait too long, use the wrong test kits, or clean mold the wrong way. This chapter helps you avoid the most common and costly mistakes — why some treatments fail, what professionals should never do, and how to make smart decisions when the situation feels urgent or confusing.

The biggest fear is missing the warning signs and paying for it with your health. This chapter helps you avoid years of misdiagnosis and shows you what doctors and handymen usually overlook — so you know what’s real, what’s risky, and what to do next to avoid irreversible damage.

It puts the medical facts, environmental knowledge, and lived experience all in one place, in plain language — less time googling, fewer wrong turns, and no more wasted energy on the wrong treatments.

And it's about more than mold: believing your symptoms, trusting your instincts, and knowing you're not alone. Dr. Grant was dismissed, misdiagnosed, and made to feel crazy too — but turned that pain into purpose, and now hands you the truth, the tools, and the hope to recover.

"A standout work that rightfully belongs in The Authorities. It's rare to encounter a medical-environmental scientist operating at such a high level who can also translate complex medical science into practical, relatable language. A meaningful and masterful contribution."

Dr. Herman Sabath, Ph.D., MPH, MSc, CMC, CPESenior Built-Environment Contamination Consultant & Public Health Practitioner

"Finally, a practical, readable book that bridges science and real-world experience. Dr. Grant's book aligns with industry standards and common sense to help readers recognize hazards and protect their health and property."

Robert PettyjohnSecretary, IICRC; CEO, Pettyjohn's Cleaning & Restoration

"When other doctors were unable to determine what I had, Dr. Grant diagnosed and treated my unsuspected fungal infection, then guided me through protecting my home and family every step of the way. Truly one of the most brilliant and compassionate doctors I know."

Karen Siff ExkornBestselling Author of The Autism Sourcebook

IAQ Radio+ — Episode 761

Dr. Irene Grant returns to IAQ Radio+ to talk about her experience treating people for mold infections and other fungal-related medical issues. Having last joined in 2013 and actively treated cases for most of her career, she shares what a physician sees in the real world — and how the medical community looks at fungi and health.

Dr. Grant's medical mycology and hazardous indoor exposure research, presented internationally from 2011 to 2025.

Featured

  • Atypical Episodic Ataxia Associated with Hazardous Indoor Microfungal Exposure and Responsive to Antifungal Therapy — 12th Trends in Medical Mycology Congress, ECMM, Balboa, Spain, September 2025.

  • Neurological Impairments, Unexplained Pain and Immune Deficiencies Associated with Hazardous Indoor Exposure to Airborne Chaetomium Spores — 12th Trends in Medical Mycology Congress, ECMM, Balboa, Spain, September 2025.

  • Adverse Obstetrical Outcomes with In-utero Exposure to Indoor Macrocyclic Trichothecenes, Stachybotrys and Trichoderma — Society for Mycotoxin Research, 46th Mycotoxin Workshop, Martina Franca, Italy, May 2025.

  • Chronic Disseminated Bipolaris Phaeohyphomycosis from Prolonged Hazardous Indoor Exposure to Documented Airborne Stachybotrys and Bipolaris — 10th Trends in Medical Mycology Congress, ECMM, Nice, France, October 2021. Abstract published in Journal of Fungi 2021, 7(11):916.

Full archive

2021 – 2025
  • Atypical Episodic Ataxia Associated with Hazardous Indoor Microfungal Exposure and Responsive to Antifungal Therapy. 12th TIMM Congress, ECMM, Balboa, Spain — Sept 2025.
  • Neurological Impairments, Unexplained Pain and Immune Deficiencies Associated with Airborne Chaetomium Spores. 12th TIMM Congress, ECMM, Balboa, Spain — Sept 2025.
  • Adverse Obstetrical Outcomes with In-utero Exposure to Indoor Macrocyclic Trichothecenes, Stachybotrys and Trichoderma. 46th Mycotoxin Workshop, Martina Franca, Italy — May 2025.
  • Neurological Disease with Hazardous Indoor Macrocyclic Trichothecenes Exposure. 45th Mycotoxin Workshop, Vienna, Austria — June 2024.
  • Overview of Inhaled Mycotoxins from Indoor Exposure & Human Illness. 11th Advances Against Aspergillosis and Mucormycosis, Milan, Italy — Jan 2024.
  • Hazardous Indoor Exposures to Mycotoxins and Microfungal Contamination Correlate with Different Immunodeficiencies. 11th TIMM Congress, ECMM, Athens, Greece — Oct 2023.
  • Correlating Human Disease Severity with Hazardous Indoor Mycotoxin and Microfungal Exposure. 2nd Balkan Conference on Medical Mycology, Thessaloniki, Greece — Oct 2022.
  • Chronic Disseminated Bipolaris Phaeohyphomycosis from Prolonged Hazardous Indoor Exposure. 10th TIMM Congress, ECMM, Nice, France — Oct 2021.
  • Gliotoxin: A Promising Bidirectionally Exclusive Marker for Indoor Microfungal Mycotoxin Contamination and Human Aspergillus Infection. 42nd Mycotoxin Workshop, Online — May 2021.
2015 – 2020
  • Disability and Disease after Hazardous Indoor Exposure to Airborne Stachybotrys Spores. 9th TIMM Congress, ECMM, Nice, France — Oct 2019.
  • Disability and Disease after Indoor Macrocyclic Trichothecenes Exposure: Immunosuppression and MTHFR Detoxification Defects. 9th TIMM Congress, Nice, France — Oct 2019.
  • Correlating Human Disease Severity with Indoor Mycotoxin and Microfungal Exposure. 11th World Mycotoxin Forum, Belfast, Northern Ireland — Oct 2019.
  • Immunodeficiencies Associated with Indoor Mold Exposures and Persistent Illness. ISHAM Congress Symposium, Amsterdam, Netherlands — July 2018.
  • Clinical Findings After Hazardous Indoor Microfungal Trichothecenes Exposure. ISHAM Congress Symposium, Amsterdam, Netherlands — July 2018.
  • Convener and Chair, Symposium on Indoor Fungi and Sick Buildings. ISHAM Congress, Amsterdam — July 2018.
  • Family of 7 Simultaneously Exposed to Extremely High Indoor Trichothecenes. 8th TIMM Congress, Belgrade, Serbia — Oct 2017.
  • Acute Myasthenia Gravis Following Extreme Indoor Hazardous Environmental Exposure. 8th TIMM Congress, Belgrade, Serbia — Oct 2017.
  • In Utero & Neonatal Complications with Indoor Environmental Exposure. 5th Diagnosis and Therapy of Fungal Diseases Course, Belgrade — Oct 2017.
  • Clinical Findings after Indoor Microfungal and Trichothecene Exposure. ASM Biodefense and Emerging Diseases Meeting, Arlington, VA — Feb 2016.
  • Outcomes from In Utero, Neonatal and Pediatric Environmental Mold Exposure. 7th TIMM Congress, Lisbon, Portugal — Oct 2015.
  • Mycotoxin Testing in Assessing Environmental Mold Exposure. ICAAC/ICC Joint Meeting, San Diego, CA — Sept 2015.
2011 – 2014
  • Neurological Disease after Mold Exposure & Response to Biofilm-Focused Antifungal Therapy. 2nd Annual Research Day, NY Medical College — March 2014.
  • Persistent Disease after Environmental Mold Exposure. 6th TIMM Congress, Copenhagen, Denmark — Oct 2013.
  • Neurological Disease after Mold Exposure & Response to Antifungal Therapy. 7th International Scientific Conference on Bioaerosols, Galloway, NJ — March 2013.
  • Neurological Disease after Mold Exposure & Antifungal Biofilm Therapy. 52nd ICAAC (ASM), San Francisco, CA — Sept 2012.
  • Immune Risks for Persistent Debility After Mold Exposure. 35th Society of General Internal Medicine Meeting, Orlando, FL — May 2012.
  • Markers for Illness and Progression Following Environmental Exposure to Stachybotrys. 5th TIMM Congress, Valencia, Spain — Oct 2011.
  • Clinical Spectrum and Response to Antifungal Therapy Following Exposure to Aspergillus-Penicillium. 5th TIMM Congress, Valencia, Spain — Oct 2011.
  • Reversing Persistent Debility After Heavy Environmental Mold Exposure. 30th EAACI Congress, Istanbul, Turkey — June 2011.