Don't be a dirt bag, be Vitamin D Deficient!

I decided to post this up since it doesn't seem like many people have heard of it:

Vitamin it can be created on the skin, formed into a powder, and then absorbed. It's been mentioned on scholarly articles that this is one of the reasons why furry things lick their skin. It's also been mentioned that you can wash it off the skin. Perhaps one of the reasons that so many people are vitamin deficient is because we're to clean?

"Agnes Helmer and Cornelius Jensen published a remarkable human/animal study in 1937, showing that significant amounts of Vitamin D are made on the surface of human skin. Reverend Jensen, the senior author, was a professor of biophysics as St. Thomas Aquinas, the precursor of the University of Dayton. The authors collected surface oils from young men before showering, irradiated the oils, and showed those oils contained large amounts of Vitamin D, enough to cure rickets in animals. Then, they tested a very practical question; can those oils be removed by washing? Indeed they found washing, even with plain water, removed much of the Vitamin D from the surface of human skin."
http://www.vitamindcouncil.org/news-archive/2009/showering-after-sunbathing/

Vitamin D metabolism - http://adc.bmj.com/content/48/1/2.full.pdf <-haven't read through all of it but it seems interesting

And remember, Vitamin D is fat soluble, eat fat, it's not evil.

Thoughts?