Re: synthetic vitamin D(3): toxic?

[Guest guest]

This link to the Office of Dietary Supplements seems to

agree, but puts the toxic doses for most at around 4x RDA.

http://ods.od.nih.gov/factsheets/vitamind.asp

-

--- In , " cronzen " <truepatriot@m...>

wrote:

> Is this true?! This paragraph implicates fat-free milks

> due to the addition of " toxic " synthetic vitamin D (D3).

>

> Thanks,

> -

>

>

> " Along with valuable trace minerals and short-chain fatty acids,

> butterfat is America's best source of preformed vitamin D.

Synthetic

> vitamin D, known to be toxic to the liver, is added to replace the

> natural vitamin D complex in butterfat. Butterfat also contains re-

> arranged acids which have strong anticarcinogenic properties. "

>

> Pariza, M. W., " Newly recognized anti-carcinogenic fatty acid

> identification and quantification in natural and processed cheeses " ,

> J. Ag. Food Chem. 1989:37, pp. 75-81.

[Guest guest]

Hi :

Whenever I have a question about micronutrients, one of the places I

take a look at is the website of the Linus ing Institute at

Oregon State University. They seem to be trying to do a decent job

of providing objective information. They do discuss toxicity of

vitamin D. But do not appear to be too concerned about it.

This is what they say:

" Toxicity

Vitamin D toxicity (hypervitaminosis D) induces abnormally high serum

calcium levels (hypercalcemia), which could result in bone loss,

kidney stones, and calcification of organs like the heart and kidneys

if untreated over a long period of time. When the Food and Nutrition

Board of the Institute of Medicine established the tolerable upper

intake level (UL) for vitamin D, published studies that adequately

documented the lowest intake levels of vitamin D that induced

hypercalcemia were very limited. Because the consequences of

hypercalcemia are severe, the Food and Nutrition Board established a

very conservative UL of 2,000 IU/day (50 mcg/day) for children and

adults (see table below) (28). Research published since 1997 suggests

that the UL for adults is likely overly conservative and that vitamin

D toxicity is very unlikely in healthy people at intake levels lower

than 10,000 IU/day (36, 76, 77). Vitamin D toxicity has not been

observed to result from sun exposure. Certain medical conditions can

increase the risk of hypercalcemia in response to vitamin D,

including primary hyperparathyroidism, sarcoidosis, tuberculosis, and

lymphoma (36). People with these conditions may develop hypercalcemia

in response to any increase in vitamin D nutrition and should consult

a qualified health care provider regarding any increase in vitamin D

intake.

Tolerable Upper Intake Level (UL) for Vitamin D

-------- Age Group -mcg/day (IU/day)

------- ----------- ------- ---------

Infants 0-12 months 25 mcg (1000 IU)

Children 1-18 years 50 mcg (2000 IU)

Adults - 19 years + 50 mcg (2000 IU) "

Here is the link:

http://lpi.oregonstate.edu/infocenter/vitamins/vitaminD/index.html

http://snipurl.com/evg7

Rodney.

> > Is this true?! This paragraph implicates fat-free milks

> > due to the addition of " toxic " synthetic vitamin D (D3).

> >

> > Thanks,

> > -

> >

> >

> > " Along with valuable trace minerals and short-chain fatty acids,

> > butterfat is America's best source of preformed vitamin D.

> Synthetic

> > vitamin D, known to be toxic to the liver, is added to replace

the

> > natural vitamin D complex in butterfat. Butterfat also contains

re-

> > arranged acids which have strong anticarcinogenic properties. "

> >

> > Pariza, M. W., " Newly recognized anti-carcinogenic fatty acid

> > identification and quantification in natural and processed

cheeses " ,

> > J. Ag. Food Chem. 1989:37, pp. 75-81.

[Guest guest]

Thanks, Rodney. I feel a _little_ better. This was another concern I had with

my recently discussed increase in (homemade) cultured milk product consumption.

It makes no mention of liver toxicity, focusing instead on the hypercalcemia

angle (the topic of my first milk post). The Ag Food Journal citation was

pulled

from a website that advocates raw and/or full fat milk, stating that the natural

forms of vitamin D therein are safe, whereas fortified skim milk contains the

toxic synthetic variety (as would multivitamins).

-

> > > Is this true?! This paragraph implicates fat-free milks

> > > due to the addition of " toxic " synthetic vitamin D (D3).

> > >

> > > Thanks,

> > > -

> > >

> > >

> > > " Along with valuable trace minerals and short-chain fatty acids,

> > > butterfat is America's best source of preformed vitamin D.

> > Synthetic

> > > vitamin D, known to be toxic to the liver, is added to replace

> the

> > > natural vitamin D complex in butterfat. Butterfat also contains

> re-

> > > arranged acids which have strong anticarcinogenic properties. "

> > >

> > > Pariza, M. W., " Newly recognized anti-carcinogenic fatty acid

> > > identification and quantification in natural and processed

> cheeses " ,

> > > J. Ag. Food Chem. 1989:37, pp. 75-81.