Background: Skin cancer is a major public health concern, and the majority of cases are caused by solar ultraviolet radiation (UVR) exposure, which suppresses skin immunity. Omega-3 (n-3) PUFAs protect against photoimmunosuppression and skin cancer in mice, but the impact in humans is unknown.
Objectives: We hypothesized that EPA-rich n-3 PUFA would abrogate photoimmunosuppression in humans.