here is a new paper:
Quote:
Am J Clin Nutr. 2007 Jan;85(1):6-18.Click here to read Links
Risk assessment for vitamin D.
Hathcock JN, Shao A, Vieth R, Heaney R.
Council for Responsible Nutrition, Washington, DC 20036-5114, USA. jhathcock@crnusa.org
The objective of this review was to apply the risk assessment methodology used by the Food and Nutrition Board (FNB) to derive a revised safe Tolerable Upper Intake Level (UL) for vitamin D. New data continue to emerge regarding the health benefits of vitamin D beyond its role in bone. The intakes associated with those benefits suggest a need for levels of supplementation, food fortification, or both that are higher than current levels. A prevailing concern exists, however, regarding the potential for toxicity related to excessive vitamin D intakes. The UL established by the FNB for vitamin D (50 microg, or 2000 IU) is not based on current evidence and is viewed by many as being too restrictive, thus curtailing research, commercial development, and optimization of nutritional policy. Human clinical trial data published subsequent to the establishment of the FNB vitamin D UL published in 1997 support a significantly higher UL. We present a risk assessment based on relevant, well-designed human clinical trials of vitamin D. Collectively, the absence of toxicity in trials conducted in healthy adults that used vitamin D dose > or = 250 microg/d (10,000 IU vitamin D3) supports the confident selection of this value as the UL.
PMID: 17209171 [PubMed - indexed for MEDLINE]
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There is a very long and complete thread over at BrainTalk in the vitamin forum. Interested people should take a look.
Vit D3 is what you want to use. I just noticed that NatureMade has come out with D3 in 1000IU tablets. I just bought that bottle.
It replaces the 400 IU (taking 3 of those) I was previously using. I always feel better in summer, when I tan up and am outside alot more. So 3 seasons ago I started taking 1000IU in winter only. I am going to raise that to 2000IU (two of the new tablets daily soon as my old bottle is almost empty). I am going back to the doctor next month, and will ask for the D test then just to see where I am at.
I have my husband on it now too. I believe in going slowly, because the body is not equipped for ultra high doses, IMO.
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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