Jones Act: Testicular cancer claims

How PFAS exposure leads to testicular cancer

PFAS compounds accumulate in the body after repeated exposure and persist in tissue for years. Research points to three converging biological pathways through which PFOA may drive testicular carcinogenesis:

• Hormonal disruption: PFAS interfere with testosterone regulation and reproductive endocrine signaling, disrupting the hormonal environment in which testicular cells develop
• DNA and cellular damage: oxidative stress and abnormal cell growth have been observed in studies of PFAS-exposed populations
• Bioaccumulation: unlike chemicals the body can metabolize, PFAS remain in tissue for years, creating chronic biological stress that raises mutation risk over time

The C8 Science Panel, which studied communities exposed to PFOA contamination from the Washington Works chemical plant, concluded there was a probable link between PFOA exposure and testicular cancer, one of only a small number of diseases to meet that standard. In occupational cohort studies of chemical plant workers, firefighters, and industrial PFAS exposure groups, higher PFOA exposure levels have repeatedly been found to increase testicular cancer rates.

Maritime workers encountered PFAS primarily through aqueous film-forming foam used in shipboard firefighting drills, fire suppression systems, and emergency response training. Cumulative exposure over a career at sea may represent a significant PFAS burden.