How strong is the evidence for Sunlight Exposure?

A widely discussed Swedish cohort study found that women who avoided sun exposure had higher all-cause mortality than those with high sun exposure, and a more recent UK Biobank analysis similarly found higher ultraviolet light exposure associated with lower mortality — provocative findings that run counter to standard sun-safety messaging, though they come from observational cohorts that cannot rule out confounding (people who avoid the sun may do so because they are already less healthy or less physically active). That evidence is currently rated emerging (20/100), built on 5 published studies, including 3 meta-analyses -- still too little to draw firm conclusions from.