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Panel Issues Warning On High Levels Of Vitamin D

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There's new guidance this week from the Institute of Medicine on the use of a popular nutritional supplement: Vitamin D. Vitamin D has been flying off the shelves in the past several years thanks to doctors' warnings that we are all Vitamin D deficient. Well, now comes news that we are consuming too much Vitamin D in supplements.

If it all sounds confusing to you, join the crowd. I remember the medical research over the summer about how most of us are vitamin deficient, that the average person should have about 30 nanograms of Vitamin D for every milliliter of blood.

It included recommendations to spend at least five to 10 minutes in the sunshine without sunscreen three times a week. And yes I followed the researchers led in this column by urging you to take more of the sunshine supplement.

Now it seems IOM researchers have determined the Vitamin D craze has gone a bit too far. The IOM panel warned that high levels of vitamin D, which are customarily sold in some dietary supplements, may positively increase the risk of kidney and tissue damage. The panel stressed that taking pills regularly and acquiring extra calcium helps raise into development of kidney stones and heart diseases.

Since 1997, based on IOMs vitamin D recommendation, it advised people whose aged from 51 to 70 to acquire 400 IUs, while those over 70 needs to take 600 IUs per day. However, experts say that majority of Americans and Canadian people do achieve that intake levels and they do not have any feelings that there is a widespread problem of vitamin D insufficiency.

So don't take 5,000 units of Vitamin D a day. More is not better after all. 400 to 600 IUs a day will do it.

That's my recommendation.

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0 # Guest 2010-12-03 08:23
It is committees like yours without good research behind your comments, that is going to cost more disease in the world. You obviously have not done more than 15 minutes worth of research on this. I hope you recant your response when you bother to do some reading. No one has ever had vitamin D toxicity under 10,000 iu per day. You are doing a great disservice to all the women in America with 20 year old recommendations. Almost all breast cancer patients I and many have cared for have vitamin D deficiencies. Your small amounts of D will not bring health to the World Community.
0 # Guest 2010-12-02 11:50
It's the job of the IOM to be conservative. I understand that.

Yet if you read the report, you'll see that the 1,000 papers they reviewed focused solely on bone health (I'm in the research field).

All the thousands of papers showing the relationship between low Vitamin D levels and a wide range of diseases and health complications were ignored.

That is not sound science.

Please think twice before recommending that a group of individuals highly at risk for vitamin D deficiency should only be taking 400-600 IU per day. It's simply not true.

Read more about vitamin D benefits (at doses nature intended) at my site below:

0 # Guest 2010-12-02 03:50
If you read the report you will find it takes no account of skin colour or lattitude. It is therefore junk, if you are not white and live in Florida. The 5 to 10 minutes in the midday midsummer sun refers only to pale white people who are lying down exposing arms legs shoulders and face. If you have any tan/colour at all it is not true.

As the panel set the maximum vitamin d intake for an adult as 4000IU a day and that adult could be a white skinned beach guard who lives in the far South (making 10,000IU to 20,000IU a day from the sun) then 5,000IU will not harm a black office worker in the far North and actually will do a lot of good.

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