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Hi. I have had subclinical hypothyroidism for over 13 years and my GP has finally agreed to treat. As my VitD level was insufficient at 33 nmol/L (Range 50 – 150 nmol/L) in July 2013 and I have learnt that the two can be linked so I took a private test and discovered that my VitD is now deficient at 28nmol (>50nmol being described as adequate). The doctor has put me on VitD3 4,000 IU for 12 weeks but made not mention of K2-MK7 or magnesium which someone mentioned on the TyroidUK website. My questions are: As I am overweight is 4,000 IU an appropriate dose? Should I be supplementing with K2-H7 and Magnesium? IF so what is the recommended dose? I would appreciate any help you can give.Thank you.

Asked by  Dbe447 on September 26, 2017

  •  Dbe447 on

    See title

    Answered by  Dbe447 on
  •  IAW on

    I encourage everyone to read http://www.vitamindcouncil.org/about-vitamin-d/vitamin-d-and-other-vitamins-and-minerals/. Here you will find the answers to the Vitamin K and magnesium and some other vitamins and minerals.
    Here at the Vitamin D Council we believe in maintaining a “minimum” level of 125nmol/l (50ng/ml). The reason behind this among others, is that at levels below 100nmol/l(40ng/ml) your risk for cancer and autoimmune disease rises “dramatically”! So if you want to be “healthy” then 125nmol/l or a little higher.
    Your level of 33nmol/l equals 13ng/ml here is the USA. In the USA, at least at my lab anything under 30ng/ml is deficient. So you were/are not insufficient you are deficient. Anything 10ng/ml and under (25nmol/l) is considered the Osteomalacia range also called adult ricketts.
    You asked if 4000iu was enough because of being overweight. It usually takes an average person of 150lbs taking 5000iu a day to reach the 125nmol/l. So normally we add another 1000iu for every 25lbs you are over the 150lbs.
    Now did anyone ever do thyroid antibody testing or just TSH tests? Studies do show a correlation of low vitamin D and thyroid antibodies. They also show that antibodies also decrease if you take enough Vitamin D.
    Your doctor really should be treating you as deficient and that means about 8000iu a day for 8 weeks. This would also adjust upwards for weight.
    If you have more questions, just ask!

    Answered by  IAW on

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