[editor-surveyor]

>> “If I have it right then vitamin D is a regulator of many processes.” <<

.
Thus making it more of a hormone than a vitamin.

[decimon]

>> “If I have it right then vitamin D is a regulator of many processes.” <<

. Thus making it more of a hormone than a vitamin.

Gotta love the internet. You can look up anything. ;-)

From Wikipedia: "A vitamin is an organic compound required as a nutrient in tiny amounts by an organism.[1] In other words, an organic chemical compound (or related set of compounds) is called a vitamin when it cannot be synthesized in sufficient quantities by an organism, and must be obtained from the diet. Thus, the term is conditional both on the circumstances and on the particular organism."