A new review examining the systemic effects of sunlight suggests that exposure to ultraviolet radiation may be associated with lower all-cause mortality and reduced risks for cardiovascular disease, infections, and several internal cancers.
Researchers analyzed 28 studies published between 2015 and 2025. One large cohort found that individuals with higher annual solar radiation exposure had a 12% lower risk of death from any cause. The review also reported reduced odds for Hodgkin's lymphoma and non-Hodgkin's lymphoma among those with greater UV exposure.
However, positive associations were noted for cancers of the cervix and liver. The authors stress these potential benefits must be weighed against the known risks of skin cancer and skin damage.
Clinicians are urged to provide nuanced guidance that balances safe sun practices with the possible systemic advantages of moderate exposure.