Everything in moderation...
You eat too much, you risk health problems that could kill you.
You drink to much alcohol ....
You drive too fast...
You stay in the sun too long before getting a good tan, you get sunburned....
I still use what we used when we were kids: baby oil with a few drops of iodine mixed in...and get the tan GRADUALLY - never getting to the burn stage.
It's called using common sense...
That cracks me up. I remember everyone using that in the sixties, with their transistors nearby!