The notion of 'building up a tan' is dangerously wrong advice. I know, I acknowledged that in my comment. My main point was only about the extent to which peo

The notion of 'building up a tan' is dangerously wrong advice. I know, I acknowledged that in my comment. My main point was only about the extent to which people with genetically high melanin levels are at much lower risk of cancer (which your first link confirms), but how their risk might increase if their melanin levels drop. I don't dispute that it's a complex and dangerous topic. And as someone with genetically very pale skin, I most certainly steer well clear of direct sunlight and make no efforts to develop a tan. I'm curious as to whether your educated guess derives from a clinical background, or reddit? That's a low blow :) I rarely go anywhere near Reddit, certainly not for anything to do with health. I have spent 10+ years researching health topics for reasons to with serious, chronic, illnesses I've endured, and have now largely overcome thanks to what I've learned.