This isn't a fair analogy since sunlight has many well documented positive effects. Vitamin D production being obvious, but also many understudied effects like

This isn't a fair analogy since sunlight has many well documented positive effects. Vitamin D production being obvious, but also many understudied effects like nitric oxide release. It's difficult to fully root out confounding effects, but typically people with more sun exposure live for longer, despite having higher rates of skin cancer.