Moist and Mold Exposure is Associated With High Prevalence of Neurological Symptoms and MCS in a Finnish Hospital Workers Cohort.

Background: Indoor air dampness microbiota (DM) is a big health hazard. Sufficient evidence exists that exposure to DM causes new asthma or exacerbation, dyspnea, infections of upper airways and allergic alveolitis. Less convincing evidence has yet been published for extrapulmonary manifestations of dampness and mold hypersensitivity syndrome ).

Methods: We investigated the prevalence of extrapulmonary in addition to respiratory symptoms with a questionnaire in a cohort of nurses and midwives (n = 90) exposed to DM in a Helsinki Obstetric Hospital. The corresponding prevalence was compared with an unexposed cohort (n = 45). Particular interest was put on neurological symptoms and multiple chemical sensitivity.

Results: The results show that respiratory symptoms were more common among participants of the study vs. control cohort, that is, 80 vs 29%, respectively (risk ratio [RR]: 2.56,  < 0.001). Symptoms of the central or peripheral nervous system were also more common in study vs. control cohort: 81 vs 11% (RR: 6.63,  < 0.001). Fatigue was reported in 77 vs. 24%, (RR: 3.05,  < 0.001) and multiple chemical sensitivity in 40 vs. 9%, (RR: 3.44,  = 0.01), the so-called "brain fog", was prevalent in 62 vs 11% (RR: 4.94,  < 0.001), arrhythmias were reported in 57 vs. 2.4% (RR: 19.75,  < 0.001) and musculoskeletal pain in 51 vs 22% (RR: 2.02,  = 0.02) among participants of the study vs. control cohort, respectively.

Conclusion: The results indicate that the exposure to DM is associated with a plethora of extrapulmonary symptoms. Presented data corroborate our recent reports on the health effects of moist and mold exposure in a workplace.