Even for melanomas, the dangers of sun exposure have been misguided. It turns out getting regular sun exposure (not burning) appears to actually lower your risk

Even for melanomas, the dangers of sun exposure have been misguided. It turns out getting regular sun exposure (not burning) appears to actually lower your risk: "Overall the clearest relationship between reported sun exposure and risk was for average weekend sun exposure in warmer months, which was protective (OR 0.67, 95% CI 0.50-0.89 for highest versus lowest tertile of exposure)" https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3046902/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3046902/