7-dehydrocholesterol (sometimes known as provitamin D3) is a chemical that, in the presence of ultraviolet light, is converted by the body to previtamin D3 which is then isomerized into Vitamin D3.
... 4.23% African American, 0.97% Native American, 0.97% Asian, 0.00% Pacific Islander, 2.17% from other races, and 1.66% from two or more races. 10.41% of the population ...