I know I always feel better on the days I spend out in my yard working in the sun.
Also, consider indiginous peoples such as native Phillipinos. Their diet is made up in great part of coconuts. Those that adhere to traditional ways always appear many years younger than their chronological age.
The Phillipines is MUCH closer to the equator than N America, so the sun is more intense, yet they don't seem to suffer with "sun damage".
I believe this is yet another case of the medical establishment seeing a simple correlation and assigning it as a cause without thoroughly investigating.