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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 nanoplastics (MNPs) have recently been identified in human kidney tissue, urine and bloodstream, raising concerns about their potential contribution to renal dysfunction. Epidemiological and clinical studies, although still limited, increasingly link exposure to MNPs and their associated contaminants, such as PFAS, bisphenols and phthalates, are associated with reduced estimated glomerular filtration rate (eGFR), albuminuria, hypertension, metabolic alterations and an increased risk of developing chronic kidney disease (CKD). MNPs may exert both direct effects, through theoretical mechanical clogging, tubular injury, oxidative stress and inflammation, and indirect effects by acting as vectors for toxic co-contaminants.Patients with CKD represent a high-risk group because of reduced renal clearance, increased susceptibility to oxidative and inflammatory stress, and frequent exposure to medical-grade plastics. Dialysis patients constitute the most informative human model of chronic plastic exposure. Each haemodialysis session involves direct blood contact with PVC tubing spallating in rollerpumps, polysulfone or polyethersulfone membranes and polycarbonate components that may release bisphenols and phthalates. In addition, water treatment systems and peritoneal dialysis bags may contribute to MNP exposure through leaching and material degradation, creating a unique and sustained “plastic burden” with potential systemic and renal consequences.This review summarizes available evidence of human pathology, discusses the specific vulnerability of CKD, dialysis, transplanted and paediatric populations, and outlines research priorities and public health strategies. Recognizing MNPs and plastic-associated chemicals as emerging, potentially modifiable environmental determinants of kidney health is crucial for risk stratification, device design, regulatory policies and Planetary Health-oriented nephrology practice.
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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 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.
Effects of microplastics and nanoplastics on the kidney and cardiovascular system
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This review summarizes evidence that microplastics and nanoplastics found in human hearts, kidneys, blood, and urine can cause oxidative stress, inflammation, cell death, and metabolic disruption. Kidney dialysis patients may face especially high exposure, and clinical evidence suggests particulate plastic exposure is a risk factor for cardiovascular disease.
Pathophysiological impact of nano- and microplastics on the kidney and their potential role in blood pressure regulation
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Tiny plastic particles have been found in human blood, kidneys, and urine, and this review of existing animal and lab studies suggests they may damage kidney cells, cause inflammation, and potentially contribute to high blood pressure. While these effects have been shown in rodents and cell studies, scientists haven't yet proven this happens in people—so this is an early warning sign worth watching, not a confirmed health risk. Still, it adds to growing concerns about how the plastic pollution in our environment might quietly affect our organs over time.
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.
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