What a dilemma. Sunshine on the skin is the best supplier of vitamin D, but melanoma patients are supposed to avoid sun exposure?
Very few people in Europe or the US get enough sun now because they are so paranoid about developing skin cancer that they wear +50 sunscreens everywhere, and their children do as well. That’s why you see so many pasty white children nowadays.
Sun exposure is a melanoma factor, btw, mostly in people who get little regular sun exposure but occasional bad sunburns...office workers who go to the beach and get seriously sun-burned a few times, for example.
Fishermen, outdoor workers, and people regularly exposed to high amounts of sun usually develop other forms of skin cancer. These can also be lethal, but aren’t if they are caught soon and freezed off.
So take Vit D supplements if you don’t get sun or wear a lot of sunscreen. They’re well absorbed, don’t upset your stomach, and are good for everything from skin to bones.