There is significant public concern regarding exposure to indoor mould, particularly certain species often described as “toxic moulds.” If you or members of your household are experiencing symptoms that you believe may be related to mold exposure, it is important to discuss these symptoms with a qualified medical professional.
Mould spores are commonly associated with allergic reactions, asthma, and other respiratory conditions. However, it is important to note that there is no statistically proven correlation between airborne mould spore concentrations (typically reported as spores per cubic meter of air) and specific health outcomes. This lack of correlation is largely due to the wide variability in individual sensitivity to mould exposure across different population groups.
Health Canada continues to monitor and review epidemiological research related to mold exposure and public health. In a 2005 Health Canada review, the following conclusions were summarized:
Summary of Health Effects of Mould Exposure (Health Canada, 2005):
Exposure to indoor mould is associated with an increased prevalence of asthma-related symptoms, including chronic wheezing, irritative, and non-specific respiratory symptoms.
Studies examining mould exposure and the development of asthma have produced conflicting results.
Laboratory animal studies have shown that exposure to fungal antigens (including Penicillium and Aspergillus) and fungal cell components (such as 1→3-β-D-glucan) can result in inflammatory responses in lung tissue. In animal models, non-lethal exposure to Stachybotrys spores resulted in significant biochemical and ultrastructural changes.
Available data suggest that an association between Stachybotrys chartarum and acute pulmonary hemorrhage in infants cannot be excluded.
Outbreak investigations and case reports indicate that elevated airborne fungal spore concentrations, particularly following environmental disturbances or inadequate control measures, may increase the risk of invasive fungal infections in immunocompromised individuals. At present, no comprehensive epidemiological studies have established a specific airborne concentration of Aspergillus spores required to cause infection.
Mould Air Sampling and Laboratory Analysis
To assess airborne mould concentrations in your home or workplace, LCS Laboratory Inc. offers mould air sampling kits available through our online store. Each kit includes clear, easy-to-follow sampling instructions. Air samples can be collected using standard air sampling pumps and returned to our laboratory for analysis.
All samples are analyzed by trained analysts using industry-accepted methods, and results are reported in a clear, professional format suitable for environmental assessments, remediation planning, and documentation.
For more information on mould sampling equipment, laboratory analysis, or to order a mold testing kit, please contact LCS Laboratory Inc. or visit our online store. ©
