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Are Microplastics Toxic? A Review from Eco-Toxicity to Effects on the Gut Microbiota
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This review summarizes existing research on the toxicity of micro- and nanoplastics, from environmental organisms to effects on gut bacteria. Studies show these particles can cause oxidative stress, disrupt energy metabolism, and damage genes in a range of species. With micro- and nanoplastics now found in human blood, lung tissue, and placentas, the authors stress that much more research is needed to understand the full health risks to people.
Emerging studies have presented an initial picture of the toxic effects of exposure to environmental micro- and nanoplastics. They have indicated that micro- and nanoplastics may induce toxicity by leading to oxidative stress, energy metabolism disorders, gene damage, and so forth in environmental organisms, marine invertebrates and vertebrates, and laboratory mouse models. In recent years, micro- and nanoplastics have been discovered in human fecal samples, placentas, lung tissue, and even blood; thus, micro- and nanoplastics pose an alarming and ever-increasing threat to global public health. However, current research on the health effects of micro- and nanoplastics and the possible adverse outcomes in humans has only presented the tip of the iceberg. More robust clinical data and basic experiments are still warranted to elucidate the specific relationships and mechanisms. In this paper, we review studies on micro- and nanoplastic toxicity from the perspectives of eco-toxicity, the adverse effects on invertebrates and vertebrates, and the impact of micro- and nanoplastics on the gut microbiota and its metabolites. In addition, we evaluate the toxicological role of micro- and nanoplastic exposure and its potential implications in respect to human health. We also summarize studies regarding preventive strategies. Overall, this review provides insights on micro- and nanoplastic toxicity and its underlying mechanisms, opening up scientific avenues for future in-depth studies.
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Effects of microplastics and nanoplastics on marine environment and human health
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This review examines the effects of micro- and nanoplastics on marine environments and human health, covering sources, environmental fate, and biological impacts. Researchers summarize evidence that these particles can cause oxidative stress, inflammation, and disruption of gut microbiota in exposed organisms. The study highlights that while the full extent of health risks remains uncertain, the pervasive presence of plastic particles in food, water, and air makes continued research a public health priority.
Advances on micro/nanoplastics and their effects on the living organisms: A review
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This review examines the current state of research on how micro- and nanoplastics affect plants, animals, microorganisms, and humans. Researchers found that these tiny plastic particles can cause oxidative stress, inflammation, reproductive problems, and disruption of gut microbiomes across a wide range of species. The study highlights that while significant progress has been made in understanding these effects, major gaps remain in assessing long-term exposure risks at realistic environmental concentrations.
Micro(nano)plastics and Their Potential Impact on Human Gut Health: A Narrative Review
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This review summarizes research on how micro- and nanoplastics affect the gut, finding that they can damage the intestinal lining, trigger immune responses, and disrupt the balance of beneficial gut bacteria in both cell studies and animal models. Since humans are primarily exposed to microplastics through food and food packaging, understanding these gut effects is essential for assessing the true health risks of plastic pollution.
The role of gut microbiota in MP/NP-induced toxicity
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This review summarizes how micro- and nanoplastics disrupt gut bacteria and why that matters for overall health. The tiny plastic particles change the composition and function of the gut microbiome, which can trigger inflammation, weaken the intestinal barrier, and potentially contribute to diseases beyond the gut through the immune and nervous systems.
Nano- and Microplastics and Gastrointestinal Toxicity
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Tiny plastic particles from packaging, water, and even the air we breathe are increasingly ending up in our bodies, and this review pulls together what scientists currently know about how that might affect our gut health. Early research suggests these particles could trigger inflammation, disrupt the healthy bacteria in our digestive system, and interfere with normal metabolism—but researchers stress that we still don't have enough solid data on real-world human exposure to know exactly how risky this is. The takeaway: microplastics in our gut are a legitimate health concern worth watching, but the science is still catching up to the scale of the problem.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.