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Vitamin D content of Beer
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Prof Trevor Marshall
Foundation Staff

Joined: Fri Jul 9th, 2004
Location: Thousand Oaks, California USA
Posts: 16174
Status:  Offline
 Posted: Tue Jul 31st, 2012 23:12


Just a quick update, since I was hypothesizing, when this topic was first started, that it just didn't make sense for cells not be able to generate 25-D directly from the precursors, such as ergosterol and 7-dehydrocholesterol, without any sunlight exposure being necessary.

Since then our knowledge of Vit D metabolism has been turned on its head. There are a lot more enzymes producing 25-D than just CYP27A1, although exactly how everything works just gets more confusing with every discovery.

For example, "Regulation of human vitamin D(3) 25-hydroxylases in dermal fibroblasts and prostate cancer LNCaP cells"

At this point, I would rate the chances that the human body does not convert some ergosterol to vitamin D metabolites as close to zero...

inactive member

Joined: Wed Dec 20th, 2006
Location: Stirling, United Kingdom
Posts: 189
Status:  Offline
 Posted: Tue Dec 18th, 2012 06:53


Unfortunately the pushers have got wise to this concept - they will try to boost the levels in meat for human consumption too:

Sarcoirodis CIDP, MP start 11/07, NoIRs, 02/08 25D-8, Ph3 since 07/08|

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