There is little evidence that sunscreen decreases 25(OH)D concentration when used in real-life settings, suggesting that concerns about vitamin D should not negate skin cancer prevention advice
that study reviewed other studies which were almost exclusively done on Europeans, so it's irrelevant.
It's possible and even probable that sunscreen has a UV-blocking effect that is enough to shut out the modicum of vitD-production that dark people have, and enough to give big returns in burn protection to pale skin, but not enough to block vitD production in pale skin.
How about instead of me playing defense here, someone proves to me that a dark-skinned person can even get UV-induced skin cancer, for starters? This whole conversation, myself included, has assumed this is even possible, with no evidence. 29-72% (let's call it an even 50%) of melanoma in dark-skinned individuals is Acral Lentigious Melanoma, which is not UV-related. What's the other 50%? For all we know it could also be mostly unrelated to UV exposure.
that study reviewed other studies which were almost exclusively done on Europeans, so it's irrelevant.
It's possible and even probable that sunscreen has a UV-blocking effect that is enough to shut out the modicum of vitD-production that dark people have, and enough to give big returns in burn protection to pale skin, but not enough to block vitD production in pale skin.
How about instead of me playing defense here, someone proves to me that a dark-skinned person can even get UV-induced skin cancer, for starters? This whole conversation, myself included, has assumed this is even possible, with no evidence. 29-72% (let's call it an even 50%) of melanoma in dark-skinned individuals is Acral Lentigious Melanoma, which is not UV-related. What's the other 50%? For all we know it could also be mostly unrelated to UV exposure.