Wednesday, April 3, 2013

Thyroid Hormone and Vitamin A Protect Against Vitamin D Toxicity in Cows

by Chris Masterjohn, PhD

New over at Mother Nature Obeyed:

Thyroid Hormone and Vitamin A Protect Against Vitamin D Toxicity in Cows

Enjoy!

Read more about the author, Chris Masterjohn, PhD, here.

41 comments:

  1. Have you seen the new info on TMAO and heart disease? I would love for you to analyze it. There is an article in the New York Times today at:
    http://www.nytimes.com/2013/04/08/health/study-points-to-new-culprit-in-heart-disease.html?src=me

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    Replies
    1. Thanks Anonymous, I'll try to look at this soon.

      Chris

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  2. It turns out that our beloved Kangaroo steak contains more L-Carnitine than any other meat? (will have to eat emus instead?)

    http://www.theage.com.au/national/kangaroo-meat-not-as-healthy-as-you-think-20130408-2hgyx.html

    I cannot help but wonder what the incidence of heart disease was amongst Australian native inhabitants when their diet was extremely high in marsupial meats?

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      Delete
  3. Chris has already destroyed this TMAO non-sense a while ago: http://www.westonaprice.org/blogs/cmasterjohn/2011/04/13/does-dietary-choline-contribute-to-heart-disease/

    There's nothing new just the usual vegan hype from the recently converted NYTimes.

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    Replies
    1. I did read what you cited. However, I would like to hear Chris's thoughts on this particular study. He said he will look at it soon and I appreciate that. The article stated "the investigators’ extensive experiments in both humans and animals, published Sunday in Nature Medicine, have persuaded scientists not connected with the study to seriously consider this new theory of why red meat eaten too often might be bad for people." I am concerned about this.

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    2. Usually I hear these theories and think also - the vegans are at it again!

      However, this study looks very legitimate, and even without the full-blown intervention study, we have some very suggestive evidence that the breakdown product of L-Carnitine contributes to the development of arterial plaques.

      This is a bitter pill for us skeptics to swallow, however, everything has a context, and given the long evolutionary history of consuming red-meat, and the short human history of heart-disease it seems very unlikely that L-Carnitine is acting alone here. Also, the fact that people who avoid all meat can still get heart-disease is very telling, and should assure us that red-meat as part of a nutrient-dense diet and low in Omega-6 is almost certainly an insignificant risk for heart-disease!

      I am still happy to follow the practises of the 'oldest culture on Earth' and eat those marsupials!

      Agree with Anonymous(1), can't wait for C.M's take on this interesting finding - remember, science is a search for truth, and sometimes we may not like what we discover!

      NB - I don't think L-Carnitine is related to choline?

      Delete
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  5. hi Chris, fascinating blogs you write. I'm also a big fan of Weston Price.

    Jumping right in - too much sunshine or vitamin D supplementation gives me a frontal headache centered around the left eye which is intense enough to bother my vision and often lasts up to 36 hours. My vitamin D levels are low, around 29.

    I'd really like to feel free to spend time outside without covering every inch of my skin... so hoping for a solution. The vitamin D Council suggested magnesium but I'm already taking 2.4 g a day and it doesn't seem to help.

    I'm currently following Cutler chelation protocol, methylation support and taking 50 mg a day of iodine. My full supplement list is here http://howirecovered.com/the-supplements/ and my story is here http://howirecovered.com/my-story/

    I'm pretty confident that I'm on the path to recovery but when I get hit by one of these headaches, I'm just miserable. Any ideas for me?

    thanks,
    Eric

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  12. Hi Chris, what a great article.
    I do have one question. Where is the upper limit for vitamin A,D and K2 supplementation if taken together?
    thank you

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