Excellent short Vitamin D video by Dr. Oz - 2011
Dr. Oz show The Power of Vitamin D Probably early 2011
Should have 50 ng/ml (not the 20 ng recommended by the Institute of Medicine)
Vitamin D allows Cancer cells to suicide
Vitamin D helps the natural immunity system of the body
Talks about colon cancer, endometrial cancer
Nice simple animations which shows
generation of vitamin D in skin from cholesterol (see image below)
addition in Liver
making the final active form in the Kidneys
Dr. Oz also has some simple table top examples/demos
How vitamin D allows the body to select which cells have cancer
How vitamin D allows getting inside a cell
about 6 minutes duration .