Cited by 241Per- and polyfluoroalkyl substances researchImmunotoxicology and immune responsesSynthesis and properties of polymers

Exposure to Per-Fluoroalkyl and Polyfluoroalkyl Substances Leads to Immunotoxicity: Epidemiological and Toxicological Evidence

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DeWitt, Jamie C., Blossom, Sarah J., Schaider, Laurel A.·2019·Journal of Exposure Science & Environmental Epidemiology

Abstract

In this perspective, we evaluate key and emerging epidemiological and toxicological data concerning immunotoxicity of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) and seek to reconcile conflicting conclusions from two reviews published in 2016. We summarize ways that immunosuppression and immunoenhancement are defined and explain how specific outcomes are used to evaluate immunotoxicity in humans and experimental animals. We observe that different approaches to defining immunotoxicological outcomes, particularly those that do not produce clinical disease, may lead to different conclusions from epidemiological and toxicological studies. The fundamental point that we make is that aspects of epidemiological studies considered as limitations can be minimized when data from toxicological studies support epidemiological findings. Taken together, we find that results of epidemiological studies, supported by findings from toxicological studies, provide strong evidence that humans exposed to PFOA and PFOS are at risk for immunosuppression.

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  • PFASs are immunotoxic, particularly in children.

    “Emerging evidence confirms that PFASs are immunotoxic, particularly in children.”

    From Exposure to Per- and Polyfluoroalkyl Substances (PFASs) in Healthcare: Environmental and Clinical Insights (2025) · cites this paper as [84]

    The Conclusions support immunotoxicity for PFOA and PFOS, specifically with respect to antigen-specific antibody responses. Exposure considerations report antibody suppression in children at lower serum concentrations than in adults and suggest that the developing immune system is particularly vulnerable. The claim is broader and more certain than the paper’s conclusions about these studied PFASs and children’s vulnerability. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • PFAS exposure is linked to diminished antibody responses to routine vaccinations and increased susceptibility to respiratory infections, driven by dysregulation of cytokine profiles and systemic effects on innate and adaptive immunity.

    “Exposure has been linked to diminished antibody responses to routine vaccinations and an increased susceptibility to respiratory infections, driven by the dysregulation of cytokine profiles and systemic effects on both innate and adaptive immunity [6,84].”

    From Exposure to Per- and Polyfluoroalkyl Substances (PFASs) in Healthcare: Environmental and Clinical Insights (2025) · cites this paper as [84]

    The section on key epidemiological studies of antibody suppression (page unavailable) reports lower vaccine-antibody responses associated with PFAS exposure and more common-cold episodes among children with higher maternal PFOA or PFNA levels. It does not establish that these associations are driven by cytokine dysregulation or systemic effects on both innate and adaptive immunity; the Overview of immunotoxicity (page unavailable) notes that antibody-response tests may not detect effects on innate immunity. (LLM, conf=0.88)

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Research works printed but not linked: 2

  1. [1]Science Advisory Board (SAB). SAB Review of EPA’s Draft Risk Assessment of Potential Human Health Effects Associated with PFOA and Its Salts. 2006.
  2. [20]Kaplan BLF, Sulentic CEW, Holsapple MP Kaminski NE. Chapter 12: Toxic Responses of the Immune System In: Casarett and Doull’s essentials of toxicology. 2015 p 177– 94.

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Authors
DeWitt, J. C., Blossom, S. J., & Schaider, L. A.
Affiliations
  • East Carolina University (US)
  • Arkansas Children's Research Institute (US)
  • Silent Spring Institute (US)
Corresponding author
DeWitt, Jamie C.
Venue
Journal of Exposure Science & Environmental Epidemiology
Published
2018-11-27
Volume
29
Issue
2
Pages
148-156
ISSN
  • 1559-0631 (ISSN-L)
  • 1559-064X
OpenAlex
W2903188676
Cited by
241
References
54
Citations by year
2026: 31 · 2025: 34 · 2024: 35 · 2023: 42 · 2022: 27 · 2021: 33 · 2020: 25 · 2019: 13
FWCI
1.49
Type
journal article
Language
en
Open access
Locations
  • Journal of Exposure Science & Environmental Epidemiology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Environmental Health Sciences (P42ES027706)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Per- and polyfluoroalkyl substances research
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotoxicology and immune responses
  • Physical Sciences › Materials Science › Polymers and Plastics › Synthesis and properties of polymers
Keywords
perfluorooctanoic acid, PFOS, per- and polyfluoroalkyl substances, immunotoxicity, immunosuppression, immune enhancement, human exposure, toxicological evidence, epidemiological evidence
MeSH terms
Animals, Immunotoxins, Caprylates, Environmental Exposure, Fluorocarbons, Humans, Alkanesulfonic Acids, Risk Assessment

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