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From accumulation to degeneration: Microplastics as emerging risk factors for intervertebral disc health
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Researchers reviewed evidence that microplastics accumulate in human intervertebral disc tissue at significantly higher concentrations (61 ± 44 particles/g) than in bone or cartilage, and discussed mechanisms by which this accumulation may contribute to disc degeneration.
In recent years, the potential threat of microplastics (MPs) to human health has garnered increasing attention. The accumulation of MPs in human intervertebral disc (IVD) tissue (61 ± 44 particles/g) is significantly higher than that in bone (22 ± 15 particles/g) and cartilage (26 ± 17 particles/g), with larger average particle sizes-likely attributable to the unique composition and structure of the IVD. However, the mechanisms underlying MP deposition in the IVD and their impact on intervertebral disc degeneration (IVDD) remain largely understudied. Existing research conditions often differ from actual human exposure scenarios, detection methodologies lack standardized protocols, and effective strategies for MP removal and prevention remain limited.This review systematically elucidates the sources of MPs (e.g., degradation of daily-use plastics and medical waste disposal), their global distribution, and associated health risks, noting that humans ingest approximately 5 g of plastic per week. We further summarized the mechanisms by which they promote IVDD, such as through the induction of oxidative stress, and investigated their deleterious effects on key IVD-related cells, including chondrocytes, nucleus pulposus cells, and other relevant cell types. In addition, emerging detection and removal strategies, such as spectroscopy-microscopy integration and enzymatic degradation, are discussed. Overall, this study seeks to bridge current knowledge gaps by offering a comprehensive theoretical framework and practical insights for the prevention and mitigation of MP-induced IVDD.
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The Human Intervertebral Disc as a Long-Term Repository for Micro/Nanoplastics: Tissue-Specific Accumulation and Risk Estimation
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Researchers quantified microplastic and nanoplastic accumulation in blood, bone, and intervertebral disc tissue from 21 surgical patients, finding a distinct disc-enriched accumulation profile in nearly half of individuals, with nanoplastics dominated by polyvinyl chloride and polyamide 66, suggesting the avascular disc may serve as a long-term plastic reservoir.
Environmental Micro-Nanoplastics and Musculoskeletal Disorders: Current Research and Insights
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Tiny plastic particles from everyday sources like packaging, water, and airborne dust can build up in our bones, joints, and spinal discs — and this review pulls together existing research showing how they may damage these tissues through inflammation, cell stress, and other harmful processes. This matters because it suggests microplastics could contribute to conditions like osteoporosis, arthritis, and disc degeneration, though scientists still need more research to fully understand the risks and figure out how to protect people.
Microplastics and nanoplastics in matched human blood, bone, and intervertebral discs: Accumulation patterns and risks
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Scientists found tiny plastic particles (microplastics and nanoplastics) in the blood, bone, and spinal discs of 21 patients undergoing back surgery—and the discs, which have poor blood flow and repair themselves slowly, tended to accumulate the most plastic. While the chemical risks appear low for now, the buildup of these particles in slow-healing tissue raises concerns that plastics could physically contribute to tissue damage or degeneration over time, something worth watching as plastic pollution continues to rise.
Environmental Micro-Nanoplastics and Musculoskeletal Disorders: Current Research and Insights
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Tiny plastic particles from packaging, water, and everyday products don't just pass through your body—research shows they can build up in your bones, cartilage, and joints, potentially damaging cells and triggering inflammation. This matters because scientists are finding links between these accumulated plastics and conditions like osteoporosis, arthritis, and spinal disc degeneration, though this review of existing studies notes we still need more research before drawing firm conclusions about long-term risks.
Microplastics in human skeletal tissues: Presence, distribution and health implications
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This study is the first to find microplastics in human bones, cartilage, and spinal discs, with the highest concentrations found in spinal discs. The most common plastics detected were polypropylene and polystyrene, and animal experiments confirmed that microplastics can reach skeletal tissues through the bloodstream. Exposure triggered inflammatory markers in the blood, suggesting microplastics in bones could contribute to skeletal health problems.
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