Cited by 302Microplastics and Plastic PollutionEnvironmental Toxicology and EcotoxicologyPharmaceutical and Antibiotic Environmental Impacts

Microplastic Contamination of Seafood Intended for Human Consumption: A Systematic Review and Meta-Analysis

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Danopoulos, Evangelos, Jenner, Lauren C., Twiddy, Maureen, Rotchell, Jeanette M.·2020·Environmental Health Perspectives

Abstract

BACKGROUND: Microplastics (MPs) have contaminated all compartments of the marine environment including biota such as seafood; ingestion from such sources is one of the two major uptake routes identified for human exposure.OBJECTIVES: The objectives were to conduct a systematic review and meta-analysis of the levels of MP contamination in seafood and to subsequently estimate the annual human uptake.METHODS: MEDLINE, EMBASE, and Web of Science were searched from launch (1947, 1974, and 1900, respectively) up to October 2020 for all studies reporting MP content in seafood species.Mean, standard deviations, and ranges of MPs found were collated.Studies were appraised systematically using a bespoke risk of bias (RoB) assessment tool.RESULTS: Fifty studies were included in the systematic review and 19 in the meta-analysis.Evidence was available on four phyla: mollusks, crustaceans, fish, and echinodermata.The majority of studies identified MP contamination in seafood and reported MP content <1 MP=g, with 26% of studies rated as having a high RoB, mainly due to analysis or reporting weaknesses.Mollusks collected off the coasts of Asia were the most heavily contaminated, coinciding with reported trends of MP contamination in the sea.According to the statistical summary, MP content was 0-10:5 MPs=g in mollusks, 0:1-8:6 MPs=g in crustaceans, 0-2:9 MPs=g in fish, and 1 MP=g in echinodermata.Maximum annual human MP uptake was estimated to be close to 55,000 MP particles.Statistical, sample, and methodological heterogeneity was high.DISCUSSION: This is the first systematic review, to our knowledge, to assess and quantify MP contamination of seafood and human uptake from its consumption, suggesting that action must be considered in order to reduce human exposure via such consumption.Further high-quality research using standardized methods is needed to cement the scientific evidence on MP contamination and human exposures.

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  • The amount humans could be exposed to through these freshwater fish (and others) is within reported ranges for other comparable exposure sources, including seafood.

    “Despite observing high anthropogenic particle body burdens relative to other studies of fish, the amount humans could be exposed to through these freshwater fish (and others) is within reported ranges for other comparable exposure sources, including seafood.”

    From Microplastics and Anthropogenic Particles in Recreationally Caught Freshwater Fish from an Urbanized Region of the North American Great Lakes (2024) · cites this paper as [21]

    The Results section, “Human Exposure to MPs through Seafood” (page unavailable), estimates annual microplastic uptake from fish and other seafood, providing a range for the seafood comparison. It does not assess the freshwater fish in the citing study or establish that exposure through them falls within those ranges. (LLM, conf=0.79)

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  • A systematic review of studies looking at microplastics in seafood intended for human consumption reported 0-2.9 microplastics/g in fish.

    “a systematic review of studies looking at microplastics in seafood intended for human consumption reported 0–2.9 microplastics/g in fish.21”

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1 of the 180 references couldn’t be matched to a known paper.

Research works printed but not linked: 1

  1. Schwarzer G 2019 meta: an R package for meta-analysis. R News 7(3): 40– 45. https://cran.r-project.org/doc/Rnews/Rnews_2007-3.pdf [ accessed 5 December 2020].

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Authors
Danopoulos, E., Jenner, L. C., Twiddy, M., & Rotchell, J. M.
Affiliations
University of Hull (GB)
Corresponding author
Danopoulos, Evangelos
Venue
Environmental Health Perspectives
Published
2020-12
Volume
128
Issue
12
Pages
126002-126002
ISSN
  • 0091-6765 (ISSN-L)
  • 1552-9924
OpenAlex
W3114255556
Cited by
302
References
180
Citations by year
2026: 55 · 2025: 59 · 2024: 49 · 2023: 56 · 2022: 55 · 2021: 27 · 2020: 1
FWCI
1.55
Type
journal article
Language
en
Open access
Licence
public-domain
Locations
  • Environmental Health Perspectives (publishedVersion, public-domain)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Repository@Hull (Worktribe) (University of Hull) (publishedVersion, other-oa)
  • Repository@Hull (Worktribe) (University of Hull) (submittedVersion, cc-by)
  • Figshare (submittedVersion)
Funders
University of Hull
Topics
  • Physical Sciences › Environmental Science › Pollution › Microplastics and Plastic Pollution
  • Physical Sciences › Environmental Science › Health, Toxicology and Mutagenesis › Environmental Toxicology and Ecotoxicology
  • Physical Sciences › Environmental Science › Pollution › Pharmaceutical and Antibiotic Environmental Impacts
Keywords
microplastics, seafood contamination, human dietary exposure, microplastic ingestion, Mollusca, Crustacea, fish, Echinodermata, marine organisms, risk of bias
MeSH terms
Dietary Exposure, Microplastics, Food Contamination, Water Pollution, Chemical, Seafood

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