Back in February of 2010 … I have online access to my script history + OCD (self diagnosed ) … my lab tests showed my vitamin D level was low so I was started on a daily supplement of 1,000 U Cholecalciferol.
I can’t really say I have noticed any difference from taking the supplement. But what the heck, eh? I haven’t felt any worse either and maybe its making something better and I just don’t realize it?
The Wikipedia article about Cholecalciferol starts off with the excerpt quoted below.
Cholecalciferol (toxiferol, vitamin D3) is one of the five forms of vitamin D. It is a secosteroid, that is, a steroid molecule with one ring open.
This and all forms of vitamin D are misnamed: vitamins by definition are essential organic compounds which cannot be synthesized by the body and must be ingested; cholecalciferol is synthesized by the body, and functions as a prehormone.
Cholecalciferol is inactive: it is converted to its active form by two hydroxylations: the first in the liver, the second in the kidney, to form calcitriol, whose action is mediated by the vitamin D receptor, a nuclear receptor which regulates the synthesis of hundreds of enzymes and is present in virtually every cell in the body.
From my last lab test … also online so I could use cut’n paste … back in May of this year.
Test Name: CALCIDIOL
Reference Range: 21-50
Lab Test: Vitamin D 25 Hydroxy
NEW Interpretation as of 7/1/13
Vit D deficient <12 ng/mL
Vit D insufficient 12-20 ng/mL
Vit D sufficient 21-50 ng/mL
Vit D potential intoxication >50 ng/mL
OLD Interpretation prior to 7/1/13
Vit D deficient < 10 ng/mL
Vit D insufficient 10-29 ng/mL
Vit D sufficient 30-100 ng/mL
Vit D potential intoxication > 100 ng/mL