Re: Lists who may need more sun exposure and/or Vitamin D (and sources)

On Mon, 11 Dec 2006 13:01:04 -0500, J <ercent@xxxxxxxx> wrote:

http://dietary-supplements.info.nih.gov/factsheets/vitamind.asp
Lists who needs more sun exposure and/or Vitamin D (and sources)
and :What are the health risks of too much vitamin D?"

If one believes the top vitamin D researchers such as Vieth, Heaney
and Holick, and the results of the recent studies, and why wouldn't
we, in the absence of the exposure to the sun's UVB-radiation (for
example in the winter at latitudes > 40 degrees) the daily dietary
doses recommended on the above web page are far too low. At least
1000-2000 IU are needed daily from food and/or supplements in the
absence of the exposure to the UVB-radiation. It is practically
impossible to get that much from food, so supplements may be needed
during the winter of far north and south. Here a couple of Finnish
studies about the vitamin D status of young Finnish men in the winter:

Valimaki VV, Loyttyniemi E, Valimaki MJ.
Vitamin D fortification of milk products does not resolve
hypovitaminosis D in young Finnish men.
Eur J Clin Nutr. 2006 Nov 29; [Epub ahead of print]
PMID: 17136043 [PubMed - as supplied by publisher]
<http://www.nature.com/ejcn/journal/vaop/ncurrent/abs/1602550a.html>

Valimaki VV, Alfthan H, Lehmuskallio E, Loyttyniemi E, Sahi T, Stenman
UH, Suominen H, Valimaki MJ.
Vitamin D status as a determinant of peak bone mass in young Finnish
men.
J Clin Endocrinol Metab. 2004 Jan;89(1):76-80.
PMID: 14715830 [PubMed - indexed for MEDLINE]
<http://jcem.endojournals.org/cgi/content/full/89/1/76>







--
Matti Narkia
.