Featured Evidence
Summaries and short form citations
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Review: Microplastics can be inhaled and ingested.
Blackburn K. The potential effects of microplastics on human health: What is known and what is unknown. Ambio. 2022
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Observational: Microplastics, carotid artery plaque, and (heart attack | stroke | death).
Marfella R. Microplastics and nanoplastics in atheromas and cardiovascular events. N Engl J Med. 2024
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Controlled animal study: Orally consumed microplastics cross the gut barrier
Garcia MM. In vivo tissue distribution of polystrene or mixed microspheres and metabolic analysis after oral exposure in mice. Environ Health Perspect. 2024
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Controlled animal study: Microplastics and the brain (learning/memory dysfunction)
Jin H. Evaluation of Neurotoxicity in BALB/c Mice following Chronic Exposure to Polystyrene Microplastics. Environ Health Perspect. 2022
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Observational: Microplastics and dementia
Nihart AJ. Bioaccumulation of microplastics in decedent human brains. Nat Med. 2025
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Observational: Microplastics and colorectal cancer
Pan W. Identification and analysis of microplastics in peritumoral and tumor tissues of colorectal cancer. Sci Rep. 2025
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Observational: Microplastics, testes, and sperm count.
Hu CJ. Microplastic presence in dog and human testis and its potential association with sperm count and weights of testis and epididymis. Toxicol Sci. 2024
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Observational: Microplastics found in human placentas (maternal and fetal sides).
Ragusa A. First evidence of microplastics in human placenta. Environ Int. 2021