Polystyrene Plastic Particles Promote Ligamentum Flavum Fibrosis via ROS-Mediated TGF-β1/SMAD3 Signaling

Summary

Tiny bits of polystyrene plastic (a common material in packaging and food containers) may cause a tough, flexible ligament in your spine to become stiff and scarred, according to lab research. This happens because the plastic particles trigger cell stress that leads to excess scar-like tissue buildup — a process that could potentially contribute to spinal stenosis, a painful condition where the spinal canal narrows. While this study was done in cells and animals rather than people, it adds to growing concerns about how the microplastics we're constantly exposed to might affect our bodies in unexpected ways.