nafise

“Parsifal is on his way to the temple of the Grail Knights and says: “I hardly move, yet far I seem to have come”, and the all-knowing Gurnemanz replies: “You see, my son, time turns here into space”
― Richard Wagner

“There is one notable exception to Jablonski and Chaplin’s equation—and it’s the exception that proves the rule. The Inuit—the indigenous people of the subarctic—are dark-skinned, despite the limited sunlight of their home. If you think something fishy’s going on here, you’re right. But the reason they don’t need to evolve the lighter skin necessary to ensure sufficient vitamin D production is refreshingly simple. Their diet is full of fatty fish—which just happens to be one of the only foods in nature that is chock-full of vitamin D. They eat vitamin D for breakfast, lunch, and dinner, so they don’t need to make it. If you ever had a grandmother from the Old World try to force cod liver oil down your throat, she was onto something for the same reason—since it’s full of vitamin D, cod liver oil was one of the best ways to prevent rickets, especially before milk was routinely fortified with it.   IF YOU’RE WONDERING how people who have dark skin make enough vitamin D despite the fact that their skin blocks all those ultraviolet rays, you’re asking the right questions. Remember, ultraviolet rays that penetrate the skin destroy folate—and ultraviolet rays that penetrate the skin are necessary to create vitamin D. Dark skin evolved to protect folate, but it didn’t evolve”
― Sharon Moalem, Survival of the Sickest: A Medical Maverick Discovers Why We Need Disease

“far as to say that white-skinned people are actually black-skinned mutants who lost the ability to produce significant amounts of eumelanin. Redheads, with their characteristic milky white skin and freckles, may be a further mutation along the same lines. In order to survive in places with infrequent and weak sunlight, such as in parts of the U.K., they may have evolved in a way that almost completely knocked out their body’s ability to produce eumelanin, the brown or black pigment.”
― Sharon Moalem, Survival of the Sickest: A Medical Maverick Discovers Why We Need Disease

“By the way, the next time you get your cholesterol checked, make a note of the season. Because sunlight converts cholesterol to vitamin D, cholesterol levels can be higher in winter months, when we continue to make and eat cholesterol but there’s less sunlight available to convert it.”
― Sharon Moalem, Survival of the Sickest: A Medical Maverick Discovers Why We Need Disease