SEATTLE — As Pacific Northwesterners go deeper into the “big dark,” some may wonder about their vitamin D levels.
“It’s so unique because it’s the one vitamin that we actually get from the sun, literally the reaction that the sun has on our skin, which is unique. No other vitamin is like that,” said Judy Simon, a registered clinical dietitian at UW Medicine.
When our skin absorbs UV rays, it makes vitamin D, and this version of vitamin D made from sunshine is exceptional…