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Micro- and nanoplastics and the kidney: exposure pathways, toxicokinetics, and pathophysiological insights
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Tiny plastic particles from our air, water, and food—called micro- and nanoplastics—can enter our bodies and travel to the kidneys, where studies show they may cause cell damage, inflammation, and scarring over time. This review pulls together existing research on how these plastics get into our system and harm kidney tissue, suggesting that everyday plastic exposure could be an overlooked risk factor for kidney disease. More research is needed, but this is an early signal that reducing plastic exposure might matter for long-term kidney health.
Micro- and nanoplastics (MNPs) are increasingly recognized as pervasive environmental contaminants with major implications for human health. Their ubiquity across air, water, food chains and indoor environments, together with the release of plastic-associated chemicals—including bisphenols, phthalates, PFAS and heavy metals—creates a complex and continuous exposure scenario. MNPs can enter the human body through ingestion, inhalation, dermal contact and medical devices; nanoplastics, in particular, may cross biological barriers, reach the systemic circulation and accumulate in target organs such as the kidney.Experimental evidence identifies multiple mechanisms of nephrotoxicity. MNPs induce oxidative stress, mitochondrial dysfunction, ferroptosis, epithelial barrier disruption, inflammatory activation and tubulo-interstitial fibrosis. Adsorbed contaminants further amplify these effects through endocrine disruption, immunotoxicity and metabolic dysregulation. The detection of MNPs in human kidney tissue and urine supports their systemic bioavailability and renal handling. This review synthesizes current knowledge on environmental and clinical exposure sources, routes of absorption, toxicokinetics and pathogenic pathways of MNP-induced renal injury. Understanding these processes is essential to correctly interpret clinical observations and to recognize MNPs asemerging environmental determinants of kidney health.
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Micro- and Nanoplastics in the Human Exposome: Environmental Pathways, Kidney Toxicity, and Implications for Public Health Risk Assessment
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This review pulls together existing research on tiny plastic particles that enter our bodies through food, water, and air, showing they can build up in organs, especially the kidneys, and potentially cause cell damage and inflammation in lab studies. While these particles have been found in human blood, tissue, and urine, scientists still don't know exactly how much risk this poses to human health, so more research is needed before drawing firm conclusions.
Micro- and nanoplastics and the kidney: human evidence, clinical vulnerabilities, dialysis-related exposure, and CKD
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Tiny plastic particles have been found in human kidneys, blood, and urine, and this review pulls together existing research suggesting these particles—along with chemicals like BPA and PFAS often found in plastics—may be linked to kidney damage, high blood pressure, and chronic kidney disease. People on dialysis may face extra exposure because their blood repeatedly contacts plastic tubing and filters during treatment, making them an important group to study further. While the science is still developing, this research highlights why reducing plastic exposure and rethinking medical device materials could matter for protecting kidney health, especially in vulnerable patients.
Micro- and Nanoplastic Pollution and Renal Health: Human Evidence, Mechanisms, and Clinical Implications
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Tiny plastic particles have been found in human blood, urine, and even kidney tissue, and lab studies show they can stress kidney cells and potentially contribute to inflammation and scarring. This review pulls together what scientists currently know, but it's clear we still don't have solid proof that microplastics actually cause kidney disease in people, more research is needed, especially for those already dealing with kidney problems or dialysis, before we can say how worried to be.
Microplastics and the Kidney: A Narrative Review of Human Evidence, Molecular Mechanisms of Cell Injury, and Future Directions
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This review summarizes existing research on how tiny plastic particles might affect kidney health. It describes how plastics entering cells can trigger stress and damage in lab studies, and notes that human studies have found microplastics in urine and kidney tissue, linked to early signs of kidney damage, though evidence remains limited.
Effects of Microplastics and Nanoplastics on the Kidneys
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This review of existing research finds that tiny plastic particles from everyday items can reach your kidneys through your bloodstream and cause damage. The plastic pieces trigger inflammation and create harmful chemical reactions that can harm kidney function and may worsen chronic kidney disease. This matters because we're all exposed to these microscopic plastics daily through food, water, and air, but we're still learning how much damage they might cause to our health.
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