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Dr. Cannell’s letter to Professor JoAnne Manson

Posted on: March 26, 2018   by  John Cannell, MD


JoAnn E. Manson, MD, DrPH
Harvard Medical School
900 Commonwealth Avenue, 3rd fl
Professor of Medicine and the
Michael and Lee Bell Professor of Women’s Health
Chief, Division of Preventive Medicine
Brigham and Women’s Hospital
Boston, Massachusetts 02215
Ph: 617-278-0871; Fax: 617-731-3843
Email:  jmanson@rics.bwh.harvard.edu

RE: Your March 6, 2018 JAMA publication.

Dear JoAnn:

I enjoyed your Viewpoint – in the 3/6/2018 JAMA – making the case supplements are usually worthless and occasionally dangerous, including vitamin D.  However, you did not answer my previous questions.  To the best of my knowledge, here are the correct answers:

  1. As a world respected Harvard University vitamin D expert, remind me how many cases of toxicity and/or deaths did Poison Control report from the 25,397 Americans who overdosed on vitamin D over the last 15 years? 
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7 Responses to Dr. Cannell’s letter to Professor JoAnne Manson

  1. richardfwaters

    Talking to her is like yelling out the window. Her entire department disputed everything she said about D and yet she is still there. I had an endocrinologist also on the staff at Harvard Medical school. For 3 years he treated my osteoporosis, D 22, with Fosamax with no improvement and finally admitted he hadn’t the foggiest idea, idiopathic, why I had osteoporosis. At that point I realized I needed more D and treated myself with dramatic improvement. Harvard has no problem with idiots and quacks in my opinion.
    Harvard Medical School is a mixed bag and not a mark of competence in my opinion.

  2. ihodgson@slingshot.co.nz

    Obviously I agree with this statement by the Prof. Manson. In fact I wish that clinicians follow this:
    “Clinicians have an opportunity to promote appropriate use and to curb inappropriate use of micronutrient supplements, and these efforts are likely to improve public health.”

    Unfortunately many clinicians have not a clue on doing this. It would be great if primary physicians learned more about supplementation especially of Vitamin D. Sadly Prof. Manson’s paper reflects a common bias of “opinion before evidence” – arising from a poor understanding of the literature on supplemental use in Medicine, especially of vitamin D.

    I wonder if Dr. Cannell’s questions will ever be answered.

  3. meblaker26028900

    Is Dr Manson related to Charles Manson?
    She needs to study Dr Cicero Galli Coimbra’s massive research and successes with toxic megadoses of D3.

  4. tsandypaws

    I’ve been treated for my MS for the last 8 years after almost medication poisoning (copaxone) , with 20,000 IU of D with magnesium and k2. Numbers have not exceeded 83. Doing very well on this protocol.

  5. fredglass

    Never ever. JoAnn Manson M.D. won’t even read Dr. Cannell’s letter. But at least reader’s of this blog will be disabused of false hopes that esteemed physicians of Harvard Medical School necessarily know what they are talking about.
    Fred Glass

  6. JKenL77760

    This is just typical of mainstream medicine that knows nothing about supplements and actually fears that patients will be kept healthy which in our system of fee for service medicine will decrease profits for doctors and hospitals and pharmaceutical companies which is their true objection but they will never admit to it.

  7. David

    The basic question of danger in supplements was answered by Dr Andrew Saul and may be found at doctoryourself.com Saul examined the medical records and found there was less than half a death per year from supplements of all kinds. As a comparison taking a vitamin is about a thousand times safer than taking any form of acetaminophen which is a over the counter drug. What ever the JAMA complains about, they should spend a thousand times more press space on OTC drugs being dangerous!

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