Vitamin D Newsletter


Blood Test Only Way To Know

Bill from Boston writes:

Dr. Cannell: Personally, I am at 6000 IU per day. After taking 4000 IU  per day for 2 months I was still deficient at 15. So based on my weight (285 pounds) I bumped it up. And I haven't had a cold or flu in over 2 years. No bronchitis either and my bronchitis usually bothers me all winter. Thank you. What can I do to help spread the word?

Dr. Cannell replies:

Your case highlights the need to get repeat blood tests. I've been surprised at just how ineffective supplementation can be, especially in obese patients. One has to supplement, get 25(OH)D blood test, adjust supplementation, get another level, etc. Many obese people will need 10,000 IU per day to obtain a level of 50 ng/ml (125 nmol/L), but getting a 25(OH)D is the only way to know how much you need to take. And, levels will go higher in the summer due to incidental sun exposure.

It is becoming widely known that adequate doses of vitamin D helps prevent colds and flu. I'm proud of the fact that the first time such a finding was ever published in the world's literature, it was published by the Vitamin D Council in our November 2005 newsletter.

As far a helping is concerned, the Vitamin D Council would like to run a national advertising campaign. We did run three ads in parts of California to the tune of $4,800. You can see the three ads on our Vitamin D Council YouTube Channel. We would like to run them all around the country but that would cost more than $200,000.00. We need contributions before we can run anymore.

Page last edited: 10 August 2010