[smusamashah]

Do you have anything as a backup to say its physically dangerous and generally unhealthy?

[cies]

It's only unhealthy when the (1) the sun is out (no clouds), (2) the "shadows are short" (sun over 45° angle), (2) there's no (semi-)cover, and (3) you are in there already over ~15min for that day (this is different per skin type and tan-level).

Below that it's very healthy.