What does research say about PFAS and testicular cancer?
Some studies link some PFAS chemicals to testicular cancer. A link does not prove cause. ATSDR, part of CDC, lists this cancer as “potentially associated” with PFAS. We found no ruling in the federal foam cases that PFAS causes it.
An NCI study looked at U.S. Air Force servicemen. Men with higher blood levels of a PFAS called PFOS had a higher risk of testicular cancer. NCI says more study is needed in military and other highly exposed groups.
NCI notes that in 2023, an international cancer research group (IARC) rated PFOA, another PFAS, as able to cause cancer in people. That rating is about cancer in general, not a finding that PFOA causes testicular cancer. NCI’s own list of testicular cancer risk factors does not include PFAS.
The first injury test trial in the federal foam cases was set for kidney cancer cases, not testicular cancer, and it was put off in 2025.