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Are high doses of Vitamin D Healthy? See this article

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  • Are high doses of Vitamin D Healthy? See this article

    I heard this interview on NPR this past week: http://www.npr.org/2010/11/29/131668...d-on-vitamin-d

    I think it's worth a look. I never took a lot of Vitamin D until I got on MDA, and heard from so many that it was necessary to increase my intake. I felt fine before that however. I currently taking about 8000 units daily, but think I will reduce it to about 1000-2000 until more research is done.

    I remember when Vitamin E was the big thing about 10 years ago, and it turns out that taking too much actually shortens lifespan based on studies.

    It seems we all can get on a kick about certain supplements from time to time.

  • #2
    John, you should have your level checked. I take 10k units a day and my last level was 63, right where it should be. Before I started (at my Endocronogist suggestion) I was very low, in the teens and had pretty bad depression during the winter.

    Also, take this study with a grain of salt. There's plenty of exsisting threads where this study has been discussed extensively.

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    • #3
      The Institute of Medicine panel rejects those claims [cancer, heart disease, etc]. The only benefit, it says, is to maintain healthy bones.
      Healthy bones? I'll take it.

      Interesting stuff though. I'll keep taking my 6,000iu/day but keep an eye out for more studies.
      The Institute of Medicine experts worry that taking vitamin D in large doses over a long period might harm some people. The evidence is inconclusive

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      • #4
        There's a great reply to this report here.

        Think about it--we create 10,000-50,000 IUs of D3 just from sunbathing (bikini exposure, Southern states, summertime)--it makes sense to me that we are designed to expect larger amounts than the article recommends. Read the Vitamin D thread here for more anecdotal evidence of the value of making sure your vitamin D levels are sufficient per the Vitamin D Council recommendations
        Ancestral Nutrition Coaching
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        Primal Pregnancy Nutrition Article

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        • #5
          Originally posted by mikebike View Post
          John, you should have your level checked. I take 10k units a day and my last level was 63, right where it should be. Before I started (at my Endocronogist suggestion) I was very low, in the teens and had pretty bad depression during the winter.

          Also, take this study with a grain of salt. There's plenty of exsisting threads where this study has been discussed extensively.

          I did get tested, and I was at adequate levels, although I was taking Vitamin D supplement of about 1000 per day at the time. However, based on what a lot of people in here were recommending, I still increased my dosage to 8000 per day. So, I think if my test results show I am fine at 1000, then I will probably stick at that.

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          • #6
            "Adequate" is normally a term used to describe the bare minimum amount needed to not induce major system malfunctions. It's almost always very far from optimal. Considering that we now know that vit D is a factor in the proper transcription of over 200 different genes and that it binds at over 2000 sites along our genome including many areas related to a number of different autoimmune diseases (ScienceDaily), I think you can properly discount the advice of any paper which states vit D is only for bone health as being severely outdated.
            "You can demonstrate the purpose and limits of human digestion with a simple experiment: eat a steak with some whole corn kernels, and see what comes out the other end. It won’t be the steak."
            -J.Stanton

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            • #7
              I did get tested, and I was at adequate levels, although I was taking Vitamin D supplement of about 1000 per day at the time. However, based on what a lot of people in here were recommending, I still increased my dosage to 8000 per day. So, I think if my test results show I am fine at 1000, then I will probably stick at that.
              Out of curiosity, what were your levels? Was the test done by LabCorp or Quest?
              Ancestral Nutrition Coaching
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              • #8
                Originally posted by Dragonfly View Post
                Out of curiosity, what were your levels? Was the test done by LabCorp or Quest?
                My results were 42, and it was LabCorp.

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                • #9
                  My reason for posting this is for everyone to think about why they are taking how much they are taking. Just as I pointed out, Vitamin E was the miracle supplement in the early 90's, and it turned out to be really negative in high doses. I am on suggesting that high doses of Vitamin D is unhealthy. But for myself, I am going to keep my dosage on the lower end for now until further studies are completed.

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                  • #10
                    My results were 42, and it was LabCorp.
                    OK, so I imagine you know already that this would not be considered adequate by the Vitamin D Council folks. Their recommended range is 50-80. Dr. Mercola noted that he personally felt best when his levels were at 79--the upper end of the range. I am waiting for my test results to see where where I am at after supplementing 8,000 IUs/day for a year.

                    But for myself, I am going to keep my dosage on the lower end for now until further studies are completed.
                    Your choice, of course! I think you may be waiting quite awhile for further studies. There is little financial incentive by pharmaceutical companies to do testing and I doubt that the government will act very quickly. I am going by how I feel, backed up by my test results.
                    Ancestral Nutrition Coaching
                    Pregnancy Nutrition Coaching
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                    • #11
                      How primal is it to take some concentrated form of a vitamin that doesn't even exist in nature?
                      Just use your head. Put down the bullshit supplements that don't exist in nature, and eat like a caveman.

                      Isn't that the entire point of all this?

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                      • #12
                        Originally posted by OnlyBodyWeight View Post
                        How primal is it to take some concentrated form of a vitamin that doesn't even exist in nature?
                        Just use your head. Put down the bullshit supplements that don't exist in nature, and eat like a caveman.

                        Isn't that the entire point of all this?
                        You mean Vitamin D? The sunshine vitamin? I didn't realize that the Sun doesn't exist in nature. My bad...
                        Calm the f**k down.

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                        • #13
                          Originally posted by OnlyBodyWeight View Post
                          How primal is it to take some concentrated form of a vitamin that doesn't even exist in nature?
                          Just use your head. Put down the bullshit supplements that don't exist in nature, and eat like a caveman.

                          Isn't that the entire point of all this?
                          1. It exists in nature, but we can't get enough of it unless we live in florida and wear no clothes all year.
                          2. The point is to use evolutionary science to be maximally healthy, not to "eat like a caveman" - otherwise this site would be all about spear-hunting, clam digging, where to find the best mushrooms and wild potatoes. Just use your head.
                          If you are new to the PB - please ignore ALL of this stuff, until you've read the book, or at least http://www.marksdailyapple.com/primal-blueprint-101/ and this (personal fave): http://www.archevore.com/get-started/

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                          • #14
                            John,

                            The experts on the subject of Vitamin D3 are Cardiologist Dr. Davis who says:
                            * 5,000 IU to 10,000 IU D3 Gelcaps Daily to achieve correct blood level in most people
                            -Proper 25(OH)D Blood Level is 60-70 ng/ml & Toxicity overdose > 120-130 ng/ml
                            http://heartscanblog.blogspot.com/se...el/vitamin%20D

                            and the D Council which says:

                            * D Council: Vitamin D Test Kit & Dosage= 1,000 IU per 25 lbs of body weight
                            D Council: Optimal 25(OH)D Blood level is between50–80 ng/ml
                            http://www.vitamindcouncil.org/healt...eficient.shtml

                            Home vitamin D test kit here:
                            * Home Test Kits ZrtLabs $65
                            http://www.zrtlab.com/vitamindcouncil/

                            I take Dr. Davis as being the BIBLE on this subject.

                            Grizz

                            Comment


                            • #15
                              John,

                              You are exposing yourself to many deficiency disease by not taking enough vitamin D.

                              D Council: What diseases are associated with vitamin D deficiency?
                              ============================================
                              * Osteoporosis * heart disease,
                              * hypertension, * autoimmune diseases, arthritis
                              * certain cancers, * depression,
                              * chronic fatigue, * chronic pain comprises
                              http://www.vitamindcouncil.org/vdds.shtml

                              Additional Diseases/conditions associated with vitamin D Deficiency
                              * malformed, brittle bones, bone fractures and osteoporosis, stooped posture
                              * Rickets, Multiple Sclerosis, Type 2 diabetes, Arthritus
                              * Increased risk of cancers
                              * bone pain, muscle cramps, tingling, weakness, loss of height.
                              * Cardiovascular Disease
                              * high blood pressure (hypertension)
                              http://www.wrongdiagnosis.com/v/vita...ency/intro.htm

                              Vitamin D proven to prevent Flu
                              http://blog.cholesterol-and-health.c...throw-out.html

                              University of California has proven that Vitamin D prevents breast cancer
                              http://www.youtube.com/watch?v=TQ-qekFoi-o

                              Vitamin D Deficiency causes Osteoporosis
                              Cure/prevent Osteoporosis with simple vitamins, better than drugs!
                              http://heartscanblog.blogspot.com/20...ntion-and.html

                              One last thing, 10,000 IU is not at all a high level, and is not anywhere overdose. It takes > 40,000 IU daily to overdose:
                              * D Council: Toxicicity overdose > 40,000 IU Daily
                              http://www.vitamindcouncil.org/vitaminDToxicity.shtml
                              http://www.easy-immune-health.com/Ov...Vitamin-D.html

                              Also overdose blood level requires
                              -Proper 25(OH)D Blood Level is 60-70 ng/ml Toxicity overdose > 120-130 ng/ml
                              http://heartscanblog.blogspot.com/se...el/vitamin%20D

                              Best to you,
                              Grizz
                              Last edited by Grizz; 12-05-2010, 12:07 PM.

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