A new study published in the Journal of Biomedical Materials Research has added further weight to the growing body of evidence questioning the long-term safety of synthetic hernia mesh implants.

The research, titled Polypropylene hernia mesh: Evidence of inflammation, oxidative stress, and degradation in human explants reveals alarming findings about the biological response to polypropylene mesh in the human body.

Researchers found that mesh implants can trigger chronic inflammation, oxidative stress, and material degradation, even years after implantation. These biological responses are not just theoretical risks – they are being observed in real-world explants removed from patients suffering complications.

This new study, published in July 2025, reinforces what many patients have been saying for years: mesh is not inert, and its long-term presence in the body can lead to debilitating pain, nerve damage, and systemic symptoms.

These findings echo the long-standing concerns raised by the late Dr. Robert Bendavid, a pioneer in native tissue hernia surgery and Dr. Vladimir Iakovlev, who has extensively studied mesh explants. Both supported Sling The Mesh campaign.

Their collaborative research has consistently shown that polypropylene mesh can degrade over time, leading to nerve entrapment, fibrosis, and chronic pain.

Dr. Iakovlev’s microscopic analysis of mesh explants has revealed cracking, embrittlement, and fragmentation of the material – evidence that directly contradicts industry claims of mesh being biologically stable. His work has been instrumental in legal cases and patient advocacy efforts, providing scientific backing to the lived experiences of thousands of injured patients.

His work also informed the scathing First Do No Harm report by Baroness Cumberlege in a chapter entitled Properties of Mesh.

Why This Matters

For campaigners like Sling the Mesh, this research is a vital tool in the fight for justice and reform. It underscores the urgent need for:

• Independent long-term safety studies
• Robust quality of life questionnaires that capture new onset of pain and other complications
• Informed consent that includes mesh risks
• Non-mesh surgical alternatives
• Support for those already harmed

This new evidence strengthens the case for rethinking the widespread use of synthetic mesh in hernia and pelvic surgeries.