Re: [Gecko] Uroplatus and Vit D3

[nathan hall]

Daniel,   I said it acts like a hormone because it is made in one part of the body and regulates activities in other parts.  D from  UV radiation is much more effecient than D from dietary sources since D3 is the most important of the D "vitamins" and 90% of D3 is synthesized in the skin.  Yes, a very small amount of D3 is received from dietary sources like eggs and fish oils, but it is called the "sunshine vitamin" for a reason.  I too have to question the effectiveness of the powdered form.  What happens to it in the gut of a gecko?  I don't have the answer.  I can only relate my knowledge of D synthesis in humans to my limited knowledge of how it works in geckos.     Nathan S. Hall GECKOS UNLIMITED www.geckosunlimited.com [EMAIL PROTECTED] ----- Original Message ----- From: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Thursday, December 20, 2001 6:59 PM Subject: Re: [Gecko] Uroplatus and Vit D3 You mentioned earlier that D3 behaves as a hormone.  Is it possible, that when D3 is added to a acidic enviroment (the stomach), that it is "denatured" like hormones or other protiens? This would essentially mean D3 supplemention is useless, and that isomerzation (is that the term?) would have to occur again. --Daniel