“…20 Recent meta-analyses have not supported the findings of these RCTs, finding no significant effectiveness of sunscreen for preventing either melanoma or nonmelanoma skin cancers. 21,22 However, these meta-analyses included studies with retrospective designs with methodological inconsistencies among studies, and 1 included studies that used only UVB filters (rather than broad-spectrum sunscreens). 21 Overall, the highest-quality evidence available suggests that sunscreens do prevent skin cancer.…”