Microplastics Found in Prostate Tumors

Pilot study finds microplastics at higher concentrations in prostate cancer tissue compared to healthy tissue.

Published on Feb. 26, 2026

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Researchers at NYU Langone Health report finding microplastics in 9 out of 10 prostate cancer samples they analyzed, with concentrations about 2.5 times higher than in nearby healthy prostate tissue. This pilot study is the first Western research to directly compare plastic levels in prostate tumors and normal prostate tissue.

Why it matters

The findings add to growing concerns about the potential health risks of microplastic exposure, with previous research suggesting links between microplastics and conditions like dementia and heart disease. If confirmed in larger studies, the prostate cancer link could spur calls for tighter controls on plastic pollution.

The details

The researchers took stringent steps to avoid lab contamination, using non-plastic tools and testing in specialized microplastic analysis rooms. One theory is that the microplastics may promote long-term inflammation that contributes to cancer development. While the sample size is limited, the study authors say the results warrant further investigation into the potential role of microplastics in prostate cancer.

  • The study findings will be presented at an American Society of Clinical Oncology meeting on February 26, 2026.

The players

Stacy Loeb

Lead author of the study and professor in the NYU Grossman School of Medicine's Departments of Urology and Population.

Michael Eisenberg

Urology professor at the Stanford University School of Medicine who was not involved in the study.

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What they’re saying

“Our pilot study provides important evidence that microplastic exposure may be a risk factor for prostate cancer.”

— Stacy Loeb, Study lead author (NYU Langone Health)

“We are finding many signals about the astonishing prevalences of micro/nanoplastics and the concerning associations with health problems.”

— Michael Eisenberg (NBC News)

What’s next

Larger studies are needed to further investigate the potential link between microplastics and prostate cancer.

The takeaway

This pilot study raises concerning questions about the potential health impacts of widespread microplastic pollution, underscoring the need for more research and action to address this emerging environmental health issue.