Universitat Autònoma de Barcelona (UAB) Mar 11 2025 Microplastics and nanoplastics, two of the smallest and most invisible forms of plastic pollution, may pose risks to human health. This is one of the main conclusions of the European project PlasticHeal, coordinated by the UAB, which has led an extensive European research effort on the effects of nanoplastics on health. These and other results from PlasticHeal were presented today at final the conference of the project, "Plastic inside us: