Unique vitamin D observations

It seems not a single day passes that I don’t learn something new about this unique hormone (mis)named “vitamin D.”

From its humble beginnings recognized only as the factor responsible for bone maturation (with deficiency leading to childhood rickets), vitamin D now commands a recognized role in almost every conceivable aspect of health and disease.

Among the unique observations I’ve made over the past several years, having corrected vitamin D in well over 1000 people:

--Ankylosing spondylitis—This fairly rare genetic disease programs a peculiar solidification of the spinal column that leads to disabling restriction of spinal mobility, accompanied by incapacitating pain. A physician came to my office after reading my Life Extension summary of vitamin D’s cardiovascular benefits, After reading it, he put himself on vitamin D 10,000 units per day and verified “therapeutic” levels with a blood test. He came to my office (he requested a consultation) and proudly showed me his near-normal spine flexibility that, until approximately 2 months earlier, had left him rigid and unable to even tie his shoes. He also reported that the chronic pain that had left him completely dependent on anti-inflammatory agents and narcotics was nearly entirely gone.

--Aortic valve disease—The list of people with either aortic valve stenosis (stiffness) or insufficiency (leakiness) that develops later in life (not congenitally deformed or bicuspid aortic valves) continues to grow. Not everyone responds, but some of the cases I’ve seen have been nothing short of miraculous. One man had severe aortic valve insufficiency (severe leakiness). After one year of vitamin D, 8000 units per day that yielded a blood level of 67 ng/ml, the insufficiency was down to a minimal level. Before vitamin D, I had never witnessed “spontaneous” reversal of aortic valve disease before.

--Chest pain—Not the chest pain of heart disease, but a chronic gnawing, toothache-like pain in the sternum that is relieved within days of initiating vitamin D. I don’t know precisely why this happens, but I speculate that, with vitamin D deficiency, there is disordered calcium metabolism, and perhaps the sternal pain represents cellular (osteoclastic) activity that is eroding sternal calcium for the purpose of maintaining blood calcium, since intestinal absorption of calcium is poor. Replace vitamin D and the abnormal calcium uptake ceases. Just my guess.

--Relief from claustrophobia—This one has me stumped. But one man’s vivid description of his previously terrifying experiences in elevators and other enclosed spaces, now entirely gone raises some fascinating questions. For instance, how much psychological disease is nothing more than the expression of disordered metabolism from vitamin D deficiency?

--Immunity from viral infections--I first learned of this association from Dr. John Cannell of the Vitamin D Council (www.vitamindcouncil.com). Dr. Cannell recounts his experience with the 2006 flu epidemic in the hospital in northern California, where he is a psychiatrist charged with the health of 200 inpatients held in closed wards. While the flu spread like wildfire to the patients in all the other wards, the 200 patients in Dr. Cannell’s ward failed to contract a single episode of flu while taking 2000 units of vitamin D per day.

I was a little skeptical at first, having been disappointed by the failure of several nutritional agents like zinc, vitamin C (perhaps, at best, a minimal effect). Now, three years into my vitamin D experience, I am absolutely convinced that Dr. Cannells’ early observation was correct: Vitamin D enhances immunity enormously. Not only have I personally not had a virus in several years, the majority of my staff and patients have been happily free of viral infections. There have been a few, to be sure. But the usual winters of hacking, coughing, and sneezing in the office have become largely a memory. It is a rare person who comes to the office with viral symptoms.

With new lessons being learned every day, it is inevitable that other fascinating new vitamin D observations have yet to be made.

Comments (47) -

  • Jenny

    2/21/2009 1:33:00 PM |

    Dr. Davis,

    Vitamin D appears to have a very strong antidepressant effect, which may be behind the response in agorophobia. People who have numbed their emotions with SSRIs may not notice it, but for someone who is not taking artificial mood drugs, Vitamin D has an effect on mood very similar to that burst of cheer one feels when going out into strong sunlight.

  • baldsue

    2/21/2009 1:44:00 PM |

    I wish it relieved constant headaches.  I do think the level of pain has dropped a notch or two since I started taking 4000 IUs a day.  And I can definitely tell the difference in my general feeling of wellness, aside from the headache, when I forget to take a dose.  In fact, that's the first question I ask myself when I feel dragged down, "Did I take my vitamin D?"

    Thanks!  I never would have ramped up my dose had I not read your words.

  • Elise P

    2/21/2009 1:51:00 PM |

    I increased my vitamin D supplementation to 3000 IU per day last fall bringing my level of D3 to 53 (I've since increased to 4000 per day).  Every year, about 3 times, I used to get a sore throat that turns to congestion that lasts for a week of misery.  I did catch the bug once this winter but it was two days of congestion and was gone.  I also got pregnant soon after adding the vitamin D, after trying for two years to conceive.  Also, my husband had allergy like symptoms, waking up sneezing and stuffy, which had gone on for 6+ months.  Two months after he upped his D to 6000 IU per day they're gone.  One question I have is for pregnancy - all the books say limit your D to 600 IU and I know they're still using the old information that looks at vitamin D as a dangerous fat soluble vitamin that can be toxic.  I'm planning to keep my supplementation at 4000 IU until the summer when I'll lower it a little, but can anyone speak to the safety of vitamin D during pregnancy?

  • Shreela

    2/21/2009 1:57:00 PM |

    "Relief from claustrophobia"

    I fell asleep in the MRI, but if helps phobias in general, I get fairly freaked when bridges are skinny, steep, or curved (highway connectors).

    I've been taking the tablets since reading about the Vit D newsletter doctor (forget his name, sorry) recommending them, and the were 2 for 1, and I had 2 coupons also.

    I read your post about how taking tablets with oil might help -- I've been taking them with fish oil already, and now I'm using olive oil on my food before taking them.

    I'll get gelcaps when I run out of the tablets, and maybe handle bridges better 8^)

  • Joe E O

    2/21/2009 2:30:00 PM |

    I can personally vouch for the efficacy of Vitamin D in relieving a) chronic chest pain b) generalized anxiety.

    It seems like a bad dream at this point - but I was completely at the end of my rope for much of 2007 vis a vis the chest pain - which also nicely fed into the the anxiety. I was in bad shape....

    Another example of the the law of unintended consequences - i.e.  Avoid the Sun - leading to Vitamin D deficiency

    I wonder if the general "health advice" about avoiding salt is leading to iodine deficiency and the sub-clinical hypothyroidism.


    Joe E O

  • steven

    2/21/2009 4:51:00 PM |

    can you explain the difference relationship and difference between D325(OH) and 1.25 measurement of D.  Thanks.

  • Anne

    2/21/2009 5:44:00 PM |

    Dear Dr Davis,

    Please can you tell the significance of the coconut at the top of your blog - is is because of coconut oil being such a good fat ?


  • TedHutchinson

    2/21/2009 6:23:00 PM |

    Readers wanting to know more about the
    "Connection with Vitamin D and Cancer"
    will find this new Grassrootshealth 30 minute lecture from Donald Trump worth watching


    and while short session of full body nonburning may a reasonable route for some to top up vitamin d in summer,  for many people, particularly those in Australia/NewZealand sun exposure at any time of day may not be worth the risk, but, neither is the use of sunscreen as safe as one might think or hope.
    You may be in for a shock when you listen to Edward Gorham. (and I'm not referring to the quality of his jokes)

    Skin Cancer/Sunscreen - the Dilemma


  • Anonymous

    2/21/2009 7:51:00 PM |

    Another one to add to the unique list, I've noticed that vitamin D helps with improved demeanor.  I first noticed this after my brother-in-law began taking vitamin D along with fish oil.  The brother-in-law had always been a quite person with an unpleasant  demeanor to me.  After he began taking the two supplements he became sociable, and in general I and several others I know found him pleasant to be around.   At the time I didn't know if it was the supplements that helped but joked with other family members that for our sanity we MUST keep him supplied with D and fish oil.      

    After talking with my sister this morning, maybe I shouldn't joke.  My middle nephew is quite.  Talking with him for more than 5 minutes was rare.  He just wasn't a chatty person - much like his father used to be.  Well, my sister told me this morning that the middle nephew began taking vitamin D two weeks ago.  He will not drink milk and so my sister was worried he was not building strong bones - her quote.  

    It dawned on me that my parents had talked about receiving several surprising phone calls this week from the middle nephew - he never called anyone - and how pleasant it was to have long talks with him.  My parents thought their grandson was growing up.  I think it's the vitamin D.

  • Kismet

    2/21/2009 9:17:00 PM |

    Vitamin D supplementation seems almost too good to be true.
    Dr. Davis, although some data on zinc has been negative, zinc *acetate* and *gluconate* lozenges are backed up by some solid research(not for prevention, but to treat the common cold). Only recently there was a positive study published in the J Infect Dis, PMID: 18279051.

  • David Brown

    2/22/2009 12:10:00 AM |

    I've been taking 2,000 IU of vitamin D3 daily for a couple years and it seems to protect me from sunburn. It wasn't enough to protect me from a cold and bout with the flu last winter so I upped intake to 4,000 IU. No sickness so far this winter.

  • Anonymous

    2/22/2009 10:17:00 AM |

    I live in an extreme northern climate state and have been diligently taking 6,000 IU/d of NOW (brand) D3 (soft-gels) for the past seven months.

    I just had my 25(OH)D3 tested for the first time this past week.  It came in at 61 ng/ml.  YES!

    At work, I find my co-workers often coughing and sneezing all day long.  This, in a work place that requires continual contact with hundreds of retail customers.

    This is the first winter that I can remember I haven't had any viral/cold symptoms at all... not even a single runny nose.

    I learned of this hormone here first, and probably still would not have learned of it's importance if not for this blog.  I now continually stress to my family, friends, and co-workers this utmost importance of supplemental D3.

    Thank you Dr. Davis

  • mike V

    2/22/2009 6:14:00 PM |

    Hope you will find this 2004 review helpful.

    Assessment of dietary vitamin D requirements during pregnancy and lactation.
    Bruce W Hollis and Carol L Wagner


    Note: Do not correct "pregnacy" in the URL. It only works as spelled.


  • hoosierville

    2/22/2009 10:31:00 PM |

    I again want to thank you for this blog. I've directed my siste here. She has 7 stents and had a quadruple about 10 years ago. She's 67 not and doing well but she still hasn't quit smoking. But she's on the D and you'd never know how bad her heart was (is).

    Anyway, I'd like to share this anectdotal little story. A friend at work contracted a bacterial repsiratory infection back in April of 08. I hadn't seen her in several months and then she stopped into my library on January 13, 2009 for a visit (we work for the school system) and she was still very, very sick. Every time she spoke she coughed, and you could tell it was a very dry and painful cough. I started telling her about Vit D and ended up telling her to take 50,000 IUs that day and then take 10,000 IUs for the next week and then do it again the next two weeks. Guess what? She's cured. She's been on every antibiotic under the sun and none of them worked. The vitamin D did it. She's almost norman again. She was sick for almost a year.

    I have had life changing effects from taking vitamin d and I've now joined the grassroots health D action program too.

    I posted sometime back about how it's helped my lungs and how much strength and stamina I've gained just in one short year. It's been an amazing experience.

    Debbie in Indiana

  • Anonymous

    2/23/2009 9:41:00 AM |

    To everyone who has left a comment on this blog, could you say if you were taking vitamin d3 tablets or oil-filled gelcaps?

  • Elise P

    2/23/2009 10:07:00 PM |

    To Mike V. - thank you for the link to that article about Vitamin D and pregnancy - I feel much more confident that I'm benefiting myself and my baby by taking a higher amount of Vitamin D.
    To the comment asking what form I'm taking - the oil gelcaps.

  • TedHutchinson

    2/24/2009 11:16:00 AM |

    I live latitude 52N
    Previously I used BIOTECH 5000iu dry powder filled capsules (not solid tablets) taken with food.

    They raised my status but even with full body sun exposure only to 40ng ~ 120nmol/l.

    I now take 5000iu oil based gel capsules (3 caps over 2 days 7500iu/d)but have also lost weight (stopped eating wheat)
    25(OH)D jumped from
    Sept 08 48ng ~ 120nmol/l
    to Jan 09 110ng/ml ~ 275nmol/l.
    I suspect Dr Davis is correct that oil based caps are more effective although some of that rise will be due to sunbed use and maybe weight loss.
    I have never used solid D3 tablets.

    There is no significant difference in daily cost, both 5000iu powder and 5000iu oil based caps can be bought in the USA and including p&p to UK cost around 5p daily.

  • Anonymous

    2/24/2009 6:39:00 PM |

    I have ank spondy as well - Its a tough disease that I have fixed almost completely with diet BUT the vitamin D has made my back feel more flexible anyway! Three weeks in - I will take a blood test soon to verify levels and see whether I need to modify the dosage.

  • mike V

    2/25/2009 2:38:00 PM |

    Re: Tablets versus Oil based. I started out with tablets (Sam's club) some years ago, and pretty much eliminated colds and infections. Based on Dr Davis's observations I switched about 2 years ago, with similar results. I should mention that I usually take oil soluble vitamins/ supplements together, often with a tablespoon of extra virgin olive oil.
    FWIW I am almost 73, and have no detectable plaque.

    PS To Dr D.
    I challenge all readers of The Heart Scan Blog to send $25 to Dr Cannell at the Vitamin D Council.

    Dr D, if you are posting Cannell's latest newsletter, please edit from this comment.
    Thanks, MikeV

    The Vitamin D Newsletter

    February 24, 2009                                                
    I know some of you want to unsubscribe but the system I used, like the formatting in this newsletter, is beyond my computer skills.  Thus, accept my apologies. If you want to unsubscribe, simply send a blank email
    to unsubscribe@vitamindcouncil.org.
    As readers from 3 years ago remember, this newsletter first published evidence vitamin D would prevent influenza and many varieties of the
    common cold in 2005:


    I then published the theory in:                                                      
    Cannell JJ, et al. Epidemic influenza and vitamin D. Epidemiology and Infection. 2006 Dec;134(6):1129-40.

    As Science News reported, I realized this after observing an influenza epidemic at Atascadero State Hospital.

    The antibiotic vitamin: deficiency in vitamin D may predispose people to infection.  Science News, November 11, 2006
    Last year, we used vitamin D to explain virtually all of the many unsolved mysteries of influenza.

    Cannell JJ, et al.  On the epidemiology of influenza. Virology Journal. 2008 Feb 25;5:29.

    Our second influenza paper is by far the most accessed paper in the journal this year.

    Top 20 most accessed articles for last year in Virology Journal

    Today, researchers from Harvard and the University of Colorado, writing in the Archives of Internal Medicine, published convincing evidence my observations at Atascadero State Hospital were correct.

    Vitamin D deficiency linked to more colds and flu. Scientific American, Feb 23, 2009

    Adit A, et al.  Association Between Serum 25-Hydroxyvitamin D Level and Upper Respiratory Tract Infection in the Third National Health and Nutrition Examination Survey. Arch Intern Med. 2009;169(4):384-390.

    Influenza kill around 35,000 Americans every year and similar viruses cause additional mortality and untold morbidity. As I have said, It appears Linus Pauling was right about everything he said about vitamin C, but he was off by one letter. The Vitamin D Council, the nearly broke non-profit educational organization, now believes most influenza deaths and many other respiratory infections, like the common cold, could be prevented if Americans, and their doctors, understood some simple facts:

    ·         Vitamin D is not a vitamin, but a steroid hormone precursor, which has profound effects on innate immunity.
    ·         The amount of vitamin D in most food and nearly all multivitamins is literally inconsequential.
    ·         The correct daily dose of vitamin D for adults is approximately 5,000 IU/day, not the 200-600 IU recommended by the Institute of Medicine, the National Institutes of Medicine and the FDA.
    ·         The only blood test to determine vitamin D adequacy is a 25-hydroxy-vitamin D, not the 1,25-di-hydroxy-vitamin D test many physicians now order.
    ·         Healthy vitamin D blood levels are between 50-80 ng/ml, levels obtained by fewer than 5% of Americans.
    ·         Medicare’s new proposed rule change, which forbids Medicare carriers for paying for virtually all vitamin D blood tests (Draft LCD for Vitamin D Assay Testing (DL29510), will kill tens of thousands of Americans yearly.
    ·         The mechanism of action of vitamin D in infection, dramatically increasing the body’s production of broad-spectrum natural antibiotics (anti-microbial peptides or AMP) suggests pharmaceutical doses of vitamin D (1,000 IU per pound of body weight per day for several days) will effectively treat not only influenza and the common cold, but help treat a host of other seasonal infections, including meningitis, septicemia, and pneumonia, in both children and adults.
    ·         In 1997, when the Food and Nutrition Board (FNB) set the current guidelines for vitamin D intake, they forgot to correct for the widespread sun avoidance that began in the late 1980’s when the AMA’s Council of Scientific Affairs warned against sun-exposure, and recommended that all Americans should make every effort to never let a photon of sunlight strike their skin.  The failure of the 1997 FNB to compensate for sun-avoidance, has led to millions of deaths around the world.
    ·         Physicians who ignore vitamin D deficiency will eventually suffer medical-legal consequences.
    ·         While many think the influenza virus causes influenza, Cannell notes it was George Bernard Shaw who first understood: “The characteristic microbe of a disease might be a symptom instead of a cause.” George Bernard Shaw, (Preface on Doctors, The Doctor’s Dilemma, 1911).

    If you want professional newsletter services, you will need to help find a foundation that will fund us.

    John Cannell, MD

    The Vitamin D Council
    9100 San Gregorio Road
    Atascadero, CA 93422

    (Posted by Mikev)

  • Dr. William Davis

    2/25/2009 10:56:00 PM |

    Thanks, Mike V.

    Dr. John Cannell is truly a visionary when it comes to vitamin D. He also has some of the best understanding of this issue of anyone around.

    We are overdue for a donation to his cause, also. Thanks for reminding me.

  • karl

    2/26/2009 3:18:00 PM |

    I would like your opinions of the resveratrol studies - they are now combining it with D3.

  • Anonymous

    2/26/2009 3:34:00 PM |

    "Chest pain—Not the chest pain of heart disease, but a chronic gnawing, toothache-like pain in the sternum that is relieved within days of initiating vitamin D. I don’t know precisely why this happens, but I speculate that, with vitamin D deficiency, there is disordered calcium metabolism, and perhaps the sternal pain represents cellular (osteoclastic) activity that is eroding sternal calcium for the purpose of maintaining blood calcium, since intestinal absorption of calcium is poor. Replace vitamin D and the abnormal calcium uptake ceases. Just my guess". interesting? I have hypothyroid and high blood calcium, made me confused as to taking vitamin D or not. i have chest pain on left side. changing my medication from synthroid to armour and starting on the Iodine drops brought body temperature, brain fog, moon face, gained weight, depression, and confusion to normal but chest pain is still there. i thought about vitamin D but avoided because of already high blood calcium. But what you just speculated above does makes sense. I am in winnipeg and should be taking vitamin D all the time. I will start on vitamin D and see if it will make any difference? The other problem here is going to see a doctor is like going to a principal's office in high school. They never Liston, treat you like numbers and most of them are sick themselves and never up to date or they never want to tell. you have to educate your self in order to save your health, relationships and jobs which are connected to one's well being.

  • Anna

    2/27/2009 4:51:00 AM |

    I made a donation to the Vitamin D Council in late 2007, but forgot to do so in 2008.  I rectified that the other day when I received the latest VDC newsletter - this time I made a $100 donation.  And the Grassroots Health office is in my town, so I have volunteered to help stuff test kit envelopes so they can save on envelope stuffing service fees.  

    I really feel the VDC is doing important work.  Except for the friends and family who "listen" to me and take enough D3, everyone I know who tests is either deficient or very low in the reference range.  

    Reading The Vitamin D Cure book now.  While I have some issue with the diet advice, the info about determining sun exposure and supplementation dose is very good.

  • TedHutchinson

    2/27/2009 1:09:00 PM |

    Vitamin D and Cardiovascular Disease Prevention
    another in the series of Vitamin D talks sponsored by Grassrootshealth.org and hosted by University of Califorian television.
    Allow 45minutes and it may be a good idea to download it if you are not familiar with the research. There is a lot of information (the conference it is taken from was aimed at doctors rather than the general public) and as it is complex you may need to listen to it twice.

    I think this particular video is worthy of Dr Davis's scrutiny. I am sure if Dr Davis devoted a specific blog to the highlight this video, he could make a better job of explaining some of the slides.

    Listen right to the end to the last question from the floor for the rather cynical audience response.

  • Anonymous

    2/27/2009 5:56:00 PM |

    Dr. Cannell knows quite a bit about vitamin D, but his understanding of vitamin A is abysmal.  He's telling people that they do not need any preformed vitamin A in their diets because it blocks vitamin D action.  This is a partial truth, but the message is all wrong.  If he spreads this message far emough, we'll be entering into an era of subclinical vitamin A deficiency and night blindness.  Until he changes, or at least clarifies, his stance on vitamin A, I cannot support him.

  • mike V

    2/28/2009 6:56:00 PM |

    To Anonymous on Vitamin A.

    Presuming your characterization is correct, it is my best guess that Dr Cannell is saving many more lives by popularizing the existence of wide Vitamin D deficiency.

    Can we get any info you may have on the relative hazards of existing Vitamin A deficiency?

    Why not pass it on? He may well appreciate your insight as much as a contribution!


    Mike V

  • homertobias

    3/1/2009 12:03:00 AM |

    Ted, Dr. David Sane's presentation was fair, in my opinion.  We have alot of association data, plausability, potential for multiple mechanisms of action, but a paucity of studies showing that supplementing works to prevent cardiovascular disease.  They will come.  Alot of us are still disappointed and cautious after mistakenly recommending high dose folate for hyperhomosystienemia.  

    Interesting to me was the German data looking not only at 25-oh levels but 1-25-oh vitamin D levels being independently associated with CHD.  Can't figure it out.

    Also very interesting was the Italian data showing correlation between CIMT and Vit D levels in diabetics. I wonder if low Vitamin D levels correllate with MDCT?  OK Dr. Davis.  Does it?  From my reading, cholesterol levels, NMR lipoprofile, HSCRP, LPPLA2, do NOT correlate with coronary calcium scores.  (Dr. Hecht's data) Will D???

  • Trinkwasser

    3/2/2009 1:41:00 PM |

    Anecdotal, but I suffer chronic atypical depression with symptoms related to SAD. Venlafaxine 225mg has been my best treatment to date (tricyclics work better but with more side effects, SSRIs don't work well at all and then stop, the connection seems to be to dopamine and norepinephrine)

    Getting my BG in line (I used to mostly do not-diabetic-yet highs dropping to not-quite-hypo lows several times a day) and I have dropped this to 37.5mg

    Taking D3 over a prolonged period and despite the appallingly dull winter I have had singificantly fewer SAD symptoms (while a lot of non-sufferers have been worse!)

    I've been taking tabs BUT with flax oil, EPO and actual complete fish so maybe the oil is helping the disposition, I'll replace them with gelcaps when I run out.

    Now the sun has finally started to come out and my energy levels have improved as they often do around this time of year (waking up from hibernation) I have dropped the venlafaxine to 17.75 mg and doing if anything even better.

    Meanwhile in Scotland a GP is finding clinical cases of Rickets for the first time in her career.

    One wonders whether apart from the too low RDA there are other factors interfering in D metabolism which have become commoner than in the past. Maybe the low fat diet prevents absorbtion? Maybe statins break one of the pathways? Otherwise surely someone would have noticed all these recent findings long ago?

  • mbarnes

    3/23/2009 4:20:00 PM |

    It is amazing how much concern folk raise about the potential toxicity of vitamin D when the literature clearly shows you can take as much as 10,000units per day without problems and there was a phase I study in MS patients that used 40,000IU per day without side effects. here is another good site on vitamin D with lots of reviews of the anti cancer data:

  • Anonymous

    12/2/2009 5:50:47 PM |

    How interesting. I have been taking oral gelcap vitamin D for some years now and I never seem to get ill when other people all around me are stuck down with terrible symptoms. Or, if my husband has flown-blown flu, I might have a sore throat for a day and feel a bit more tired than usual for a day and then I'm fine.

    I was wondering whether my apparently amazing ability not to get sick might be because I have MGUS (monoclonal gammopathy of unknown significance) -- I was wondering if it might be that my immune system is so 'good' it is also attacking me too -- whether there might be some link, that at some point in the future will be my undoing. ? But I much prefer the more optimistic vitamin D theory of my lack of colds and flu etc.

  • Anonymous

    12/2/2009 6:05:01 PM |

    To the person who asked about vitamin D and pregnancy, and to the other person who asked about tablets vs oil gel caps, I was taking tablets for years without it raising my serum D levels, It was when I switched to D3 oil gel caps as a result of reading this blog, that my levels started to climb. When I finally went up to 6000IUs that seemed to help a lot.

    When I became pregnant, I asked my (high risk) maternal foetal medicine doctor about it, and he said that is that was the level of supplementation it was taking to keep my vitamin D levels up to normal, I should keep taking it. He also said that I should continue to try to get some sun every day (I am not in a hot sunny place) that would be important too. He seemed to be saying that just taking the supplements is not enough. You need both.

  • Anonymous

    12/30/2009 3:45:58 PM |

    Hello!!! heartscanblog.blogspot.com is one of the most outstanding innovative websites of its kind. I take advantage of reading it every day. I will be back.

  • DougCuk

    1/9/2010 10:05:34 PM |

    I do not as a rule take any supplements - but I am now recommending all my family and friends to take high dose Vitamin D. I have been researching this topic for the last two months - I have a degree in Zoology and worked in Bio-Physics - and the more I read the more convinced I have become. I have created my own webpage with links to the best Vitamin D websites, charts and videos. Anything I find gets posted here: http://www.stargateuk.info/vitamind

  • Anonymous

    2/9/2010 5:16:44 PM |

    On Vitamin D and pregnancy, here's a quote about recent studies:

    "In two U.S. government-funded studies, Hollis is studying vitamin D supplementation of up to 6,000 IU daily in nursing women, and 4,000 units per day in pregnant women. So far "not one single adverse event" has been observed in women on the highest doses, he said in an interview."

  • Anonymous

    2/19/2010 8:06:00 PM |

    Dr Davis,
    I eliminated cereals from my diet 6 month ago and since then I haven't have an herpes outbreak that used to plague me if I didn't take VALACICLOVIR 500 mg every day I would get an outbreak 7 days after I did't take the pill, now I'm supplementing 6000 iu of vitamin D a day I hope that I will stay outbreak free for longer!!!! I have to tell you that I stopped eating cereals specially wheat after reading this blog   and have felt better than ever!!!

  • Anonymous

    3/7/2010 9:08:28 PM |

    Vitamin D controls T cell antigen receptor signaling and activation of human T cells. WOW



  • vitamin D

    5/17/2010 5:23:29 AM |

    According to me after read this post I think that vitamin D is more good to take for better health because it helps blood to stay in normal level.

  • Anonymous

    8/24/2010 8:15:39 AM |

    I've suffered from depression for many years, along with joint pain that flares up from time to time, but have never tested positive for any antibodies, so have no idea what it is that causes the problem. I've just learned to deal with the pain and stiffness myself and only use over the counter anti-inflamatories when the pain gets too bad to handle without using anything because they've always upset my stomach.

    These last couple of years fatigue has plagued me as well. Last year my dr detected low levels of vitamin D and suggested I took 1,000 units a day. A couple of weeks ago, he retested my levels only to find that they had dropped significantly, from 36 to 20 (normal range 50-75). I am now on 2,000 units a day. Within 24 hours I began to feel more energy than I'd felt in years and my mood had lifted. I've always been aware that in winter I had less energy and was more morose, but never connected the dots. My daughter also suffers from depression and a couple of weeks was going through a really bad patch. I insisted the dr measured her D3 levels and sure enough she was low on D3.She started on 2,000 units of D3 and improved within 36 hours from being a crying mess to being full of energy.

    For someone like me who's always been a vitamin skeptic, I'm amazed at the difference in such a short time. I'm 3 weeks into taking 2,000 units a day and can't see any effect on my joints yet but have my fingers well and truely crossed on this one.

    Does anyone know if low D3 levels are also connected with chronic gastritis? I has diagnosed last year and have developed gastric intestinal metaplasia (which explains why I get stomach pain if I take NSAIDS or aspirin). However, there has been no cause established for me developing this condition and since I rarely take the NSAIDS that's not the cause either. I tested negative for HP infection and have never smoked and rarely drink alcohol. I'm now wondering if this condition is also due to low D3 levels.

  • Rhett

    9/29/2010 12:18:36 PM |

    I was recently diagnosed as severely vitamin D deficient and was unable to find a decent place dedicated to vitamin D discussion, so I decided to start my own forum http://www.vitamindforum.com . I would love to hear everyones experiences!

  • Philip Gower

    10/4/2010 3:27:38 AM |

    I have upped my daily dosage of D3to 15,000U,and feel great ! My lifelong psoriasis has largely melted away, and occasional angina has stopped. At age 73 I am able to walk our dogs in hills for hours daily, and I take no prescription medications.I also supplement with SSKI drops, and follow a low carb diet.In 6 months I have dropped 50 lbs, and seem to be levelled off at about 150 lbs.I am about to test for the "25" D3 blood level, mostly out of curiosity. I have stopped getting colds or flu !

  • buy jeans

    11/3/2010 2:53:06 PM |

    --Relief from claustrophobia—This one has me stumped. But one man’s vivid description of his previously terrifying experiences in elevators and other enclosed spaces, now entirely gone raises some fascinating questions. For instance, how much psychological disease is nothing more than the expression of disordered metabolism from vitamin D deficiency?

  • aashvi

    11/9/2010 10:31:42 AM |

    There can be several kinds of chest pen but when it is related to heart disease, it becomes dangerous.  It’s very important that we should keep this in mind. Dilse India provides information about  chest pain. The information can be helpful for those who have chest pain and there is danger of heart disease.
    Website : Risk of chest pain

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    3/7/2011 8:49:40 AM |

    Previous research has suggested that vitamin D levels were inherited, in part, but a new study of 33,996 people has found three specific genetic variants that seem to correlate with a person's levels of vitamin D.

  • Shashin Patel

    6/7/2011 1:04:18 PM |

    This is a great post. It contains a lot of important information about Vitamin D and how much should its requirement be. I came across one nice article about Vitamin D and wonder if you like it. To know more click on the link  below:
    Boca Wellness and Nutrition

  • Rohan

    6/9/2011 5:51:38 PM |

    Fruits and vegetables are excellent sources of potassium which helps to regulate fluids and maintain normal blood pressure. That includes bananas, sweet potatoes, avocados and cantaloupes in your diet.
    You may find more information on Boca Wellness and Nutrition

  • Shashin Patel

    6/15/2011 3:42:48 PM |

    Nice video about Vitamin D and its facts. You can find it at

  • [...] around 50ng/ml. I've read others experiencing similar.   "Unique vitamin D observations"  Unique vitamin D observations | Track Your Plaque Blog  snippet:    ...–Immunity from viral infections–I first learned of this association [...]