Polytetrafluoroethylene microplastic properties, pollution, toxicity and analysis: a review
Level 5 - mechanism / opinion, no new human data
Narrative review with meta-analysis of observational environmental and tissue measurements; graded by design analogy.
OpenAlex W4414853456 · doi:10.1007/s10311-025-01885-w
What was done
The authors reviewed the properties, sources, environmental occurrence, analytical limitations, and toxicity of polytetrafluoroethylene (PTFE) microplastics, and conducted a meta-analysis evaluating PTFE microplastic concentrations across water, sediment, fish, and human tissues.
What was found
PTFE accounts for approximately 60% of the global fluoropolymer market and represents up to 44% of microplastics in sediments, 74% in benthic fish, and 60% in human organs. Meta-analysis results showed PTFE microplastic concentrations averaged 7.3 ± 13.3 particles/L in water, 3,685.7 ± 4,832.0 particles/kg in sediment, 24.9 ± 37.1 particles/individual in fish, and 482.5 ± 554.1 particles/kg in human tissues. Mechanistic toxicity includes oxidative stress, inflammation, necrosis, and cellular signaling disruption.
Why it matters
This review compiles the environmental distribution and human organ burden of PTFE-derived microplastics, highlighting substantial contamination from sources such as non-stick cookware.
Limits
The abstract does not state the number of studies included in the meta-analysis. Large standard deviations exceeding the means across all sample categories indicate extreme variance and heterogeneity in measurement and detection methods. Clinical outcomes in humans were not assessed.
Cited by
- context PFAS or forever chemicals are found in 80% of non-stick pans.