Vitamin D lecture

[Juhana Har]

Here is a pretty impressive public video lecture 'Prospects
for Vitamin D Nutrition' given by vitamin D scholar Reinhold
Vieth in October 2005. The lecture lasts for one hour. Some
topics it covers are vitamin D toxicity, doses, implications
in relation to bone density, cancer prevention and multiple
sclerosis. Enjoy.

http://www.direct-ms.org/presentations.html

--
Juhana

[Johnhamcoe]

Juhana Harju wrote:
> Here is a pretty impressive public video lecture 'Prospects
> for Vitamin D Nutrition' given by vitamin D scholar Reinhold
> Vieth in October 2005. The lecture lasts for one hour. Some
> topics it covers are vitamin D toxicity, doses, implications
> in relation to bone density, cancer prevention and multiple
> sclerosis. Enjoy.
>
> http://www.direct-ms.org/presentations.html

Juhana,

That is an excellent video.

I'm just wondering what you do to ensure you get enough D.

I take 2000 IU supplement and use a tanning bed four or five
days a week.

But I've heard there are different types of D supplements.
For example, in David Feldman's study they said, "Feldman's
group uses calcitriol for both the cell culture studies and
the clinical trial to ensure that enough of the active form
of vitamin D is in the patients to be effective. Feldman
emphasized that calcitriol is available by prescription
only. "We don't want the patient to think that if they take
over-the-counter vitamin D, it will work in the same way,"
he said. "

Any comments?

John

[Ron]

Johnhamcoex wrote:
> That is an excellent video.
>
> I'm just wondering what you do to ensure you get enough D.
>
> I take 2000 IU supplement and use a tanning bed four or five
> days a week.
>
> But I've heard there are different types of D supplements.
> For example, in David Feldman's study they said, "Feldman's
> group uses calcitriol for both the cell culture studies and
> the clinical trial to ensure that enough of the active form
> of vitamin D is in the patients to be effective. Feldman
> emphasized that calcitriol is available by prescription
> only. "We don't want the patient to think that if they take
> over-the-counter vitamin D, it will work in the same way,"
> he said. "
>
> Any comments?
>
> John

Hi John...Calcitriol is tricky stuff and best left to
administartion by a doctor familiar with its use. Calcitriol
has a short half-life in the body (~3 hr). It auto-catalyzes
its own decomposition as well as the decomposition of
calcidiol. Hence, if administered by itself, without adequate
calcidiol supplementation, calcitriol will quickly move the
body into a vitamin D deficient state...Best wishes and good
health, ron

[Matti Nark]

On 30 Sep 2006 07:45:29 -0700, "Johnhamcoex"
<johnh@amcoex.com> wrote:
>
>But I've heard there are different types of D supplements.
>For example, in David Feldman's study they said, "Feldman's
>group uses calcitriol for both the cell culture studies and
>the clinical trial to ensure that enough of the active form
>of vitamin D is in the patients to be effective. Feldman
>emphasized that calcitriol is available by prescription
>only. "We don't want the patient to think that if they take
>over-the-counter vitamin D, it will work in the same way,"
>he said. "
>
If we get sufficient supply of vitamin D and hence sufficient
amount of circulating calcidiol (25(OH)D), our bodies tightly
regulate the amount of calcitriol produced from calcidiol.
Taking calcitriol as a drug bypasses this regulation, and is
therefore only for the treatment of diseases under doctor's
supervision. Calcitriol is about 100 times more toxic that
vitamin D3, and is rightly available by prescription only. You
don't want to mess with calcitriol. Only forms of vitamin D,
which can be used as a supplement are vitamin D3 a.k.a.
cholecalciferol and vitamin D2 a.k.a. ergocalciferol: Vitamin
D2 is, however, so much less effective than vitamin D3, that I
wouldn't use it at all.


--
Matti Narkia

[Don Wiss]

On Sat, 30 Sep 2006, "I.P. Freely"
<fuhgheddaboutit@noway.nohow> wrote:

> and that 2,000 IU of Vit D supplementation daily warrants
> careful consideration of its form, toxicity, and overdosage
> testing?

2,000 IU of Vit D is nothing. Toxicity doesn't happen until
something like 10,000 units a day. I take 4,400 units a day
and my 25-D level is still below what some people consider
optimal. The fellow who has the web site that started this
thread takes 6,000 units a day.

Don <www.donwiss.com> (e-mail link at home page bottom).

[I.P. Freel]

ron wrote:
> Johnhamcoex wrote:

>>
>> I'm just wondering what you do to ensure you get enough D.
>> I take 2000 IU supplement and use a tanning bed four or
>> five days a week.

Did you know that, hour for hour, tanning beds cause more skin
cancer than the sun does, that they are suspected of being
addictive, and that 2,000 IU of Vit D supplementation daily
warrants careful consideration of its form, toxicity, and
overdosage testing?

I.P.

[Matti Nark]

On Sat, 30 Sep 2006 10:07:24 -0700, "I.P. Freely"
<fuhgheddaboutit@noway.nohow> wrote:

>ron wrote:
>> Johnhamcoex wrote:
>
>>>
>>> I'm just wondering what you do to ensure you get enough D.
>>> I take 2000 IU supplement and use a tanning bed four or
>>> five days a week.
>
>Did you know that, hour for hour, tanning beds cause more
>skin cancer than the sun does, that they are suspected of
>being addictive, and that 2,000 IU of Vit D supplementation
>daily warrants careful consideration of its form, toxicity,
>and overdosage testing?
>
2000 IU/d is regarded safe by both American and European
authorities. But recent studies have shown that even 10000
IU/d is physiological and therefore safe. In the winter in the
latitudes over 40, there is no UVB radiation and therefore no
cutaneous production of vitamin D. It has been shown that the
body of healthy men uses 3000 - 5000 IU of vitamin D/d, if it
is available. Therefore to retain the summer levels of vitamin
D in the winter in high latitude areas, one has to consume in
average about 4000 IU/d in the winter. This is only possible
with the supplements.

--
Matti Narkia

[Soares.Gla]

Juhana Harju wrote:
> Here is a pretty impressive public video lecture 'Prospects
> for Vitamin D Nutrition' given by vitamin D scholar Reinhold
> Vieth in October 2005. The lecture lasts for one hour. Some
> topics it covers are vitamin D toxicity, doses, implications
> in relation to bone density, cancer prevention and multiple
> sclerosis. Enjoy.
>
> http://www.direct-ms.org/presentations.html
>
> --
> Juhana

I encourage you to post more updated, free, quality lectures
online. In poorer countries this provides a shortcut that
can save years, sometimes decades in the public pursuit of
knowledge. I know that there are crucial debates about
dosage and toxicity, but where there is no access to
knowledge there is not even awareness that these are issues.
Knowledge may save lives, even pedestrian knowledge
sometimes does. Good job!

Gl=E1ucio Soares

[Jim Chinni]

"Juhana Harju" <spamshantigiriorama.removespam@gmail.com>
wrote in part:

>Here is a pretty impressive public video lecture 'Prospects
>for Vitamin D Nutrition' given by vitamin D scholar Reinhold
>Vieth in October 2005. The lecture lasts for one hour. Some
>topics it covers are vitamin D toxicity, doses, implications
>in relation to bone density, cancer prevention and multiple
>sclerosis. Enjoy.
>
>http://www.direct-ms.org/presentations.html

This is very good. Thanks for posting it.
--
Jim Chinnis Warrenton, Virginia, USA jchinnis@alum.mit.edu

[Juhana Har]

soares.glaucio@gmail.com wrote:

: I encourage you to post more updated, free, quality lectures
: online. In poorer countries this provides a shortcut that
: can save years, sometimes decades in the public pursuit of
: knowledge. I know that there are crucial debates about
: dosage and toxicity, but where there is no access to
: knowledge there is not even awareness that these are issues.
: Knowledge may save lives, even pedestrian knowledge
: sometimes does. Good job!
:
: Gláucio Soares

Thanks. That lecture is quite exceptional.

-- . Juhana

[Juhana Har]

Jim Chinnis wrote:
: "Juhana Harju" <spamshantigiriorama.removespam@gmail.com>
: wrote in part:
:
:: Here is a pretty impressive public video lecture 'Prospects
:: for Vitamin D Nutrition' given by vitamin D scholar
:: Reinhold Vieth in October 2005. The lecture lasts for one
:: hour. Some topics it covers are vitamin D toxicity, doses,
:: implications in relation to bone density, cancer prevention
:: and multiple sclerosis. Enjoy.
::
:: http://www.direct-ms.org/presentations.html
:
:
: This is very good. Thanks for posting it.

Thanks, Jim. I was very glad to find it. It is a rare
exception.

--
Juhana

[Johnhamcoe]

I.P. Freely wrote:

> Did you know that, hour for hour, tanning beds cause more
> skin cancer than the sun does

The movie implied the advantages outway the risks.

In my particular case, I have bulbs with more UVB than most
bulbs. Many bulbs are almost all UVA.

Also, do you have any references regarding the skin cancer
claim being greater for beds versus the sun?

Thanks,

John

[I.P. Freel]

Johnhamcoex wrote:

>
> Also, do you have any references regarding the skin cancer
> claim being greater for beds versus the sun?

No. I'd have to Google it, as I read it in passing in one of
the health newsletters I receive (e.g., Mayo, J-H, Consumer
Reports, Harvard). Since I don't use tanning beds and get WAY
too much sun most of the year, I didn't pursue the finding any
further. But a quick Google with a blast of words like
<tanning booth cancer addictive> quickly surfaced many
relevant hits from respectable sources.

I.P.