Sunny ‘D’ Works Better: Holick

“When you ingest vitamin D, only about 60 percent of it sticks to vitamin D-binding protein, but when you make vitamin D in your skin, 100 percent binds to the protein.” — Dr. Michael F. Holick, vitamin D research pioneer from the Boston University School of Medicine.

Holick’s quote, from his book, “The Vitamin D Solution,” points out that every cell in the body has a vitamin D receptor and that vitamin D derived from sun exposure to the skin works 40 percent better to activate the receptor than dietary vitamin D, which is scarce in comparison. Holick also refers to research showing that more than 1 million North Americans have conditions that prevent vitamin D absorption from supplements or diet — making it incredibly obvious that UV exposure to the skin is natural and intended.