“Here’s something else to consider: Vitamin D made in the skin lasts at least twice as long in the blood as vitamin D ingested from the diet. When you are exposed to sunlight, you make not only vitamin D but also at least five and up to ten additional photoproducts that you would never get from dietary sources or from a supplement. So the obvious question is, why would Mother Nature be making all of these vitamin D photoproducts if they weren’t having a biologic effect?”

— Vitamin D pioneer Dr. Michael Holick, in an excerpt from his new book, “The Vitamin D Solution” which was released in stores this month.

Holick and others have started to convert many clinical dermatologists into sensible sun lovers — which explains why some dermatology lobbying groups are pushing back even harder right now with their anti-sun messaging.

“Holick and the D research community have a giant monster in a cage right now, and the dermatology monster is thrashing back like a caged animal,” Smart Tan Vice President Joseph Levy said. “But they’re just digging a deeper hole. The case that humans are supposed to be getting regular UV exposure has never been stronger.”