Overview

• Peer-reviewed research in PLOS One measured 1–10 micrometer particles in real-world settings and projected daily inhalation as high as about 68,000 particles.
• Indoor concentrations exceeded outdoor levels, and air inside cars tested at roughly four times the microplastic load found in sampled apartments.
• Scientists matched airborne fragments to car interior materials and reported that routine movements continuously resuspend lightweight particles.
• Researchers say these small particles can reach deep lung tissue and enter the bloodstream, though direct links to specific human diseases remain unconfirmed.
• Suggested steps to cut exposure include reducing plastic-based furnishings and textiles, using HEPA filtration and vacuums, and improving ventilation where possible.