A new study has found microplastic particles in approximately 90% of prostate cancer tumors analyzed, raising significant questions about their potential role in human health. The research, conducted by scientists at the University of California, examined tumor samples from patients who had undergone surgery. The most common plastic types identified were polyethylene and polyvinyl chloride (PVC). While the study establishes a clear presence of these foreign particles in diseased tissue, the researchers emphasize that it does not prove microplastics cause cancer. The findings add to growing concern about the pervasive nature of plastic pollution and its possible biological impacts, highlighting the need for further investigation into the long-term health consequences of chronic microplastic exposure. Read the full article at https://www.sciencedaily.com/releases/2026/02/260225001250.htm.