NewsHealth & MedicinePlastic shards permeate human brainsA study of microplastics and nanoplastics in brains shows an astonishing increase over time Microplastics are permeating our world. Our brains are no exception.Nugroho Ridho/Moment/Getty Images PlusBy Laura Sanders15 seconds agoOur brains are increasingly plastic. Minuscule shards and flakes of polymers are surprisingly abundant in brain tissue, a study of postmortem brains shows.This appraisal of microplastics and nanoplastics, published February 3 in Nature Medicine, raises questions and worries about what this plastic is doing to us.The findings are both significant and concerning, says Raffaele Marfella, a cardiovascular researcher at University of Campania Luigi Vanvitelli in Naples, Italy. He and colleagues recently found that people with more micro- and nanoplastics, or MNPs for short, in blood vessel plaques were at higher risk of heart attacks, strokes and death.