[didibus]

This is the source that first got me curious about this: https://www.outsideonline.com/2380751/sunscreen-sun-exposure...

There's quite a bit of research that seem to coroborate it.

Sun can cause melanoma, but lack of sun also has negative effects albeit harder to track. Some even unrelated to vitamin D, as it seems the Sun does more than just provide us with vitamin D.

But it seems that the research on melanoma actually indicates that it is sunburn that is the prime cause. And sun exposure while under 20 is another leading cause. But after that, exposure that does not result in burn, like short term exposure doesn't seem to cause melanoma and does provide other health benefits.

I recommend a read in any case.

Not saying to go wild sun tanning, but I think if you can avoid burn (even minor ones), you're good.