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Old 04-30-2007, 09:29 AM   #1
Peter Terry Haas
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W/F Safe link to an article talking about a study linking Vitamin D to reductions in cancer rates.

http://www.theglobeandmail.com/servlet/story/RTGAM.20070428.wxvitamin28/BNStory/ specialScienceandHealth/home

Favorite quote from article:
"A four-year clinical trial involving 1,200 women found those taking the vitamin had about a 60-per-cent reduction in cancer incidence, compared with those who didn't take it, a drop so large — twice the impact on cancer attributed to smoking — it almost looks like a typographical error."

Its funny that I came across this article today since I just switched from Cod Liver Oil (w/ Vit D) to fish oil (no Vit D) now that spring is here.
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Old 04-30-2007, 09:41 AM   #2
Chris Norwood
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These papers are worth reading, but ill throw in some quoted text for good measure:

http://jn.nutrition.org/cgi/content/full/135/2/332

"Vitamin D deficiency is now recognized as an epidemic in the United States. ...There is mounting scientific evidence that implicates vitamin D deficiency with an increased risk of type I diabetes, multiple sclerosis, rheumatoid arthritis, hypertension, cardiovascular heart disease, and many common deadly cancers. Vigilance of one's vitamin D status by the yearly measurement of 25-hydroxyvitamin D should be part of an annual physical examination."

"
They defined vitamin D insufficiency as a serum 25(OH)D of ≤20 µg/L (50 nmol/L), and divided their subjects into 4 age groups, 18–29 y, 30–39 y, 40–49 y, and ≥50 y. Serum 25(OH)D was measured in 142 subjects at the end of summer and in 165 subjects at the end of winter. A high incidence of vitamin D insufficiency was found (Table 2). A significant (P < 0.001) difference was demonstrated between measures of 25(OH)D after summer (35 ± 10 µg/L) and after winter (30 ± 10 µg/L). Vitamin D insufficiency was more prevalent in all age groups after winter and averaged 30% after winter and 11% after summer. Somewhat surprisingly, the eldest group was least likely of the groups to have insufficiency and the authors felt this is likely explained by subjects’ use of a multivitamin containing 400 IU of Vitamin D. Multivitamin use was significantly inversely associated with vitamin D insufficiency in the after summer and the after winter groups."

http://jn.nutrition.org/cgi/content/full/135/2/317

and a presentation by a leading researcher in the area (Dr. Reinhold Vieth):

http://www.insinc.com/onlinetv/direc...vnetplayer.htm

I take 2600IU a day, and have taken blood tests to confirm my levels.

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