...and by all means, make sure everyone has enough Vitamin D.
Of all the stupid things doctors say, the fear they have of "vitamin D overdose" is remarkable. They all get taught some 50 year old myth in medical school and never update-- because there is no marketing team paying to update textbook knowledge of any inexpensive treatment.
I'm not saying Vitamin D is bad, when I'm saying Sunlight (and light exposure) is good.
Fear of Melanoma from the UV in sunlight is a true concern. And it can be ennumerated and compared to other things.
It turns out that insufficient sunlight exposure causes 30 times more health damage, than melanoma does.
For instance, if you have high blood pressure, sunlight can help with that, and that's likely to be way more important than your risk of melanoma. Particularly if you are older and probably won't be waiting 30 years to see if you started a new melanoma today.
But you don't have to trade melanoma for light exposure. Significant UV is near midday only. So you could avoid the midday sun, like everybody but mad-dogs and Englishmen.
And light bulbs such as therapeutic Red and NIR or even Blue come with zero elevated cancer risk.
Saunas provide IR and health benefits without elevated cancer risk.