Hi Arlene; thank you.

so in essenece Vitamin D2 is 1/3 as effective as Vitamin D3.

Vitamin D3 is found in Sunshine and in Foods like Fish Eggs Butter.

Vitamin D2 is made in a lab. from photosynthesis and a special Algae.

For Vegans; Vitamin D2 would be the only alternatiee. I predict the
day will be here when Vitamin D (2 or 3) will be heralded as the
greatest Vitamin Discovery of the 21st centruy! anne. thanks again !--
In ldnsupport@yahoogroups.com, arlizotte@... wrote:
>
> Hi Anne
> The article is very long so here's the address
http://jcem.endojournals.org/cgi/content/full/89/11/5387
>
> Here is a small part of it:
> Vitamins D2 and D3 are generally considered to be equivalent in
humans. Nevertheless, physicians commonly report equivocal responses
to seemingly large doses of the only high-dose calciferol (vitamin
D2) available in the U.S. market.
> The relative potencies of vitamins D2 and D3 were evaluated by
administering single doses of 50,000 IU of the respective calciferols
to 20 healthy male volunteers, following the time course of serum
vitamin D and 25-hydroxyvitamin D (25OHD) over a period of 28 d and
measuring the area under the curve of the rise in 25OHD above
baseline.
> The two calciferols produced similar rises in serum concentration
of the administered vitamin, indicating equivalent absorption. Both
produced similar initial rises in serum 25OHD over the first 3 d, but
25OHD continued to rise in the D3-treated subjects, peaking at 14 d,
whereas serum 25OHD fell rapidly in the D2-treated subjects and was
not different from baseline at 14 d. Area under the curve (AUC) to d
28 was 60.2 ng·d/ml (150.5 nmol·d/liter) for vitamin D2 and 204.7
(511.8) for vitamin D3 (P < 0.002). Calculated AUC indicated an even
greater differential, with the relative potencies for D3:D2 being
9.5:1.
> Vitamin D2 potency is less than one third that of vitamin D3.
Physicians resorting to use of vitamin D2 should be aware of its
markedly lower potency and shorter duration of action relative to
vitamin D3.
>
> -------------- Original message --------------
> From: "Anne" <anne_white53@...>
> "Vitamin D2 in the form of Sythetic Vitamin D2 formed by
ultraviolet
> light in a laboratory is used for therapueitc purposed by M.D.'s.
>
> Vitamin D2 is used to raise levels of Vitamin D quickly to prevent
> further soft bones such as is seen in Ricketts.
>
> One shot of Synthetic Vit. D lasts a years and raised Vit. D levels.
>
> Even children with curved bones can be helped with Vitamin D2 shots.
>
> (ps where the entire aritcle from the university;can u copy for us?-
--
>
> In ldnsupport@yahoogroups.com, arlizotte@ wrote:
> >
> >
> > Be careful with synthetic vitamin d2. I saw a medical study that
> says:
> > Vitamin D2 Is Much Less Effective than Vitamin D3 in Humans
> > Laura A. G. Armas, Bruce W. Hollis and Robert P. Heaney
> > Creighton University (L.A.G.A., R.P.H.), Omaha, Nebraska 68131;
and
> Medical University of South Carolina (B.W.H.), Charleston, South
> Carolina
> >
>
>
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