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Information on the latest vitamin D news and research.

Find out more information on deficiency, supplementation, sun exposure, and how vitamin D relates to your health.

hi my wife has a vitamin d level of 13, despite seeing a GP, who prescribed only 800iu of Strivit a day for 3 months, and then another one who confirmed that 'is a very high dose' we are not convinced that this will help. can someone help us in finding the right dose, because from what we have read it seems it won't help to bring the level up quickly enough particularly with winter on its way thanks

Ask the Vitamin D Council

Asked by  deaglep36232600 on September 9, 2016


  • deaglep36232600
     deaglep36232600 on

    See title

    Answered by  deaglep36232600 on

  • IAW
     IAW on

    You have found your way to the Vitamin D Council website and like several other organizations we are trying to spread the word that Vitamin D levels below 50ng/ml are not “healthy” levels. Too many new studies show that humans need higher levels than was once thought and that Vitamin D is NOT just for bone health. Among other things it helps keep our immune systems functioning at optimal levels.
    We usually recommend that people weighing around the average weight of 150lbs, take 5000iu a day. (If you weigh more, you have to take more.) After about 8 weeks this amount should get most people to a level of 50ng/ml. You then have to keep taking the 5000iu a day or else your levels will plummet again.
    After 8 weeks we do recommend that you have levels checked again to make sure you reach that level.
    Your wife’s level is really low. Does she have a lot of symptoms or any health issues? If she does than I might even recommend more than the 5000iu. Please let me know.
    I would also encourage you to read http://www.vitamindcouncil.org/about-vitamin-d/vitamin-d-and-other-vitamins-and-minerals/. It is very important.
    If she develops any new symptoms when taking the D, it is most likely a mineral deficiency causing it and you need to come back and tell me.
    Even if you (husband) have no symptoms, the odds are you are deficient also and need to take 5000iu a day. (At levels below 40ng/ml and your odds of cancer and/or autoimmune disease increases dramatically.

    Answered by  IAW on