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Understanding Multiple Chemical Sensitivity (MCS): Interdisciplinary Insights into Science, Policy, and Lived Experience

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Faculty of Health Sciences, Ontario Tech University, Oshawa, ON L1G 0C5, Canada
Interests: public health; healthy environments; child and adolescent health; health geography; air pollution and health; health inequities; educational health promotive toolkits
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Special Issue Information

Dear Colleagues,

For this Special Issue, we invite scholarly contributions that examine multiple chemical sensitivity (MCS) from diverse disciplinary perspectives, including biomedical sciences, law, social sciences, environmental health, and disability studies. MCS is a complex and frequently misunderstood condition, characterized by adverse reactions to low-level chemical exposures. Although it affects a significant and growing segment of the population, MCS remains insufficiently recognized in healthcare systems, public policy, and academic research.

Drawing inspiration from RESILIENCE: The International Conference on MCS, for this Special Issue, we welcome original research articles, systematic reviews, and critical commentaries that will expand our understanding of MCS’s prevalence, pathophysiological mechanisms, diagnostic challenges, and environmental determinants. Submissions may also explore legal and policy dimensions, including human rights, accessibility, and the duty to accommodate individuals with MCS, as well as qualitative investigations rooted in lived experiences.

By fostering dialogue among researchers, clinicians, legal scholars, policymakers, advocates, and those directly impacted by MCS, this Special Issue will fill in existing knowledge gaps, challenge persistent stigma, and promote evidence-informed responses that advance equity and inclusion. Our aim is to elevate both the scientific legitimacy and the human experience of MCS, encouraging a more critical and compassionate rethinking of how multiple chemical sensitivity is understood and addressed in contemporary society.

Dr. Caroline Barakat
Guest Editor

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Keywords

  • multiple chemical sensitivity (MCS)
  • environmental health
  • chemical exposure
  • disability inclusion
  • genomics and pathophysiology
  • public health policy
  • human rights and accessibility
  • legal frameworks
  • lived experience
  • interdisciplinary research

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Published Papers (1 paper)

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Research

20 pages, 394 KB  
Article
A Qualitative Exploration of Policy, Institutional, and Social Misconceptions Faced by Individuals with Multiple Chemical Sensitivity
by Susan J. Yousufzai, Elaine Psaradellis, Rohini Peris and Caroline Barakat
Int. J. Environ. Res. Public Health 2025, 22(9), 1383; https://doi.org/10.3390/ijerph22091383 - 4 Sep 2025
Viewed by 916
Abstract
Multiple Chemical Sensitivity (MCS) is characterized by recurring symptoms in response to low-level chemical exposures that are typically well-tolerated by the general population. Despite the debilitating health impact of MCS, public indifference and prevailing skepticism often result in stigma, misinformation, and systemic barriers [...] Read more.
Multiple Chemical Sensitivity (MCS) is characterized by recurring symptoms in response to low-level chemical exposures that are typically well-tolerated by the general population. Despite the debilitating health impact of MCS, public indifference and prevailing skepticism often result in stigma, misinformation, and systemic barriers that obstruct individuals’ access to essential environments. This qualitative study examined the lived experiences of individuals with MCS, focusing on how their condition is misunderstood and the factors that contribute to misconceptions about MCS. Seven focus group transcripts were analysed using thematic analysis in NVivo. Participants (aged 50–60) were drawn from various regions in Canada. One main category emerged from the analysis, centred on misconceptions influenced by policy and community factors. This category was divided into four themes, each with subcategories: (1) Psychological misattribution of MCS, (2) Healthcare and Institutional Gaps, (3) Policy Barriers, Compliance, and Resistance, and (4) Commercial Influences and Misleading Practises. These themes suggest a need for improvements in policies and transparency related to chemicals used in household and personal-care products, institutional compliance with fragrance-free guidelines, and increased awareness of MCS to reduce stigma and misconceptions. Addressing these issues can lead to adequate accommodations and support systems, which significantly improve quality of life. Full article
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