Mainstream medicine downplays and even ridicules the reality of mold toxicity from water damaged buildings, but they seem to have skipped reading articles like this and the citations within it. While the researchers did not do the studies themselves, they compiled the published studies to look at the problem from different angles. They looked at which mold species were in which buildings. They looked at what conditions were needed to aerosolize mold fragments and mycotoxins leading to opportunities for human inhalation. They looked at studies showing how humans were affected by mold exposure. They thus covered a lot of bases that are very difficult to ignore.
Noting that people in industrialized countries can spend more than 80% of their time inside, the authors sought to add to understanding the effects of mold growth in these water damaged buildings (11,12). The microbial growth—which, besides mold, also includes bacteria, viruses, and their organic compounds including endotoxins—contribute the aerosols which inhabitants of the buildings breath (16,17). These biological contaminants to indoor air may adversely affect their health (16,17,19,20,21, 22,23, 24,25,26,27).
In an early section of their paper, they describe the process by which mold growing on various building materials can be released into the air. This comes through obvious processes of air flow, direct handling, and other daily human activities. In some studies, other researchers found that fragments were released into the air in greater concentrations than spores (47). In cited studies, these smaller fragments could penetrate deeper into subjects lungs than the larger spores (41, 47).
From the paper based on a mix of air and dust sampling:
“Based on the data collected in these studies, over 50 different fungal species were identified from 19 fungal genera on the surfaces of materials. Most of the detected species belong to the genera Aspergillus, Cladosporium, Stachybotrys, Penicillium, Alternaria and Ulocladium. Overall, the top ten detected species on the surface of materials from all studies (n = 34) are: Aspergillus versicolor (detected in 74% of the studies), A. niger (68%), A. fumigatus (53%), Cladosporium sphaerospermum (41%), Stachybotrys chartarum (32%), Penicillium chrysogenum (29%), Aspergillus flavus (26%), Alternaria alternata (21%), Cladosporium cladosporioides (18%) and Ulocladium chartarum (15%).”
So what if mold is flying around us? Unless it hurts us, why would we care? Well, they do cite a number of studies linking different molds to different health problems in animals and humans.
- Aspergillus versicolor and its toxins: allergies, immunosuppression, asperigilloses (129,132,133,134)
- Aspergillus niger and toxins: kidney failure
- Aspergillus fumigatus…: pulmonary infection, immune effects, and farm animal abortions (62,63,64,65)
- Stachybotrys chartarum…: pulmonary inflammation, protein synthesis inhibition. (66,67,68).
- Aspergillus flavus…: liver cancer, immune suppression, allergies. (30,111,139,144)
They noted the presence of less research for the aerosolization of mycotoxins, but shared what was reported. The following mycotoxins have been reported in air samples from USA and European homes.
- Trichothecenes
- Chaetoglobosin A
- Aflatoxins B1, B2
- Roridin E
- Ochratoxin A
- Satratoxin
- Sterigmatocystins
- Gliotoxin
Given the number of patients who we have seen and treated for mold toxicity, none of this comes as any surprise to providers at Sanctuary, here in Franklin, Tennessee. But mainstream medicine just won’t accept the reality of the evidence. Until they do, we will keep looking to papers like this and caring for those who are suffering needlessly. Helping them restore healthier, more abundant lives requires addressing mold toxins in them and the mold growth in their living environment.
Original Article:
Al Hallak, M., Verdier, T., Bertron, A., Roques, C., & Bailly, J. D. (2023). Fungal Contamination of Building Materials and the Aerosolization of Particles and Toxins in Indoor Air and Their Associated Risks to Health: A Review. Toxins, 15(3), 175. https://doi.org/10.3390/toxins15030175
Citations mentioned here.
- Nielsen K.F. Mycotoxin Production by Indoor Molds. Fungal Genet. Biol. 2003;39:103–117. doi: 10.1016/S1087-1845(03)00026-4.
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Sanctuary Functional Medicine, under the direction of Dr Eric Potter, IFMCP MD, provides functional medicine services to Nashville, Middle Tennessee and beyond. We frequently treat patients from Kentucky, Alabama, Mississippi, Georgia, Ohio, Indiana, and more... offering the hope of healthier more abundant lives to those with chronic illness.

Dr. Eric Potter graduated from Vanderbilt Medical School and then went on to specialize in internal medicine (adult) and pediatric care, spending significant time and effort in growing his medical understanding while caring for patients from all walks of life.








