Ingestion of Poly-Ethylene Terephthalate Nanofragments Derived from Plastic Bottles Triggers Long-term Gut Inflammation and Microbiome Dysbiosis in Mice

Impact of Micro-nanoplastics on Gut and Immune Function

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This review examined how micro- and nanoplastics disrupt gut microbiota and immune function across aquatic and terrestrial vertebrates, with implications for human health. Because the gut microbiome governs immune regulation and metabolic health, microplastic-induced dysbiosis represents a plausible mechanism by which plastic ingestion could drive systemic inflammation and disease beyond the GI tract.

Impact of Microplastics on the Severity of Intestinal Inflammation in Mice

Oligomer nanoparticle release from a biodegradable plastic triggers acute gut inflammation

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Researchers studying biodegradable polylactic acid microplastics found that gut lipases hydrolyze them into oligomers that self-assemble into nanoplastic particles, which then bioaccumulate in multiple mouse organs and trigger acute intestinal inflammation, raising concerns about the safety of biodegradable plastics.

Gut microbiome alterations associated with microplastics: Underestimated risk from tiny particle

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This review pulls together existing research showing that tiny plastic particles, found in our food, water, and even air, can disrupt the balance of bacteria living in our gut, and this disruption has been linked to problems ranging from digestive diseases to effects on the brain, liver, and reproductive system in animal studies. The catch: scientists still struggle to accurately detect and measure these particles in the body, meaning our real-world exposure and its health effects are likely underestimated. Bottom line, microplastics may be quietly messing with your gut health in ways we're only beginning to understand and measure.

Microplastics and nanoplastics in human health: a comprehensive review of exposure pathways, cellular mechanisms, and toxicological implications

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Researchers reviewed human exposure pathways to microplastics and nanoplastics through seafood, salt, drinking water, inhalation, and skin contact, examining how these particles cross biological barriers to reach organs and trigger oxidative stress, inflammation, and endocrine disruption with poorly understood long-term consequences.