What Vitamin D3 dose is considered appropriate?
Interestingly Cannell has not been too incorrect in his broad dosing dictum:
~1000 IU per 25-lb body weight
Dr. Cannell in fact is perfectly right on for dosing for 80% of the people that I have personally dosed for this steroid precursor to serum concentrations [25-OH-D] = 60-80 ng/ml.
Adults (Source: courtesy of Dr. Cannell's non-profit VitaminDCouncil.com)
Require 4000 to 10,000 IU daily (or even MORE) in the AM enough to provide serum blood levels of 25(OH)D 60-80 ng/ml.
Infants and Children
Infants and children under the age of one, should obtain a total of 1,000 IU (25 mcg) per day from their formula, sun exposure, or supplements. As most breast milk contains little or no vitamin D, breast-fed babies should take 1,000 IU per day as a supplement unless they are exposed to sunlight. The only exception to this are lactating mothers who either get enough sun exposure or take enough vitamin D (usually 4,000–6,000 IU per day) to produce breast milk that is rich in vitamin D. Formula fed babies should take an extra 600 IU per day until they are weaned and then take 1,000 IU a day, as advised below.
Children over the age of 1 year, and less than 4 years of age, should take 1,500 IU vitamin D per day, depending on body weight, latitude or residence, skin pigmentation, and sun exposure.
Children over the age of 4, and less than 10 years of age, should take 2,000 IU per day, unless they get significant sun exposure. On the days they are outside in the sun, they do not need to take any; in the winter they will need to take 2,000 IU every day.
Children over the age of 10 years old should follow instructions for adults detailed above.
My children get 20,000 IU on average PER WEEK and they're about 75lbs (but we have not been compliant patients and failed to get blood testing yet). We're lazy and they get 2 caps of the NOW Brand 5000 IU caps twice weekly, more or less. I require approx 5000 to 8000 IU daily (I'm about 128# right now *booh*) to keep my blood 70+ ng/ml and the Doctor and asthma inhalers away. Admittedly, as an adult, I rarely stay outdoors despite being a natural sun-worshipper. I get sick quite easily (like...if... anyone sneezes in my direction... b/c I not a carrior of warrior Lp(a)).
Thank Goodness for Dr. Davis (who's been raging about Vitamin D for 5 yrs)!
And the cholesterol-derived...Vitamin D!
They've saved my lungs (+tob cessation *!I know!!...quit 18mos ago*).
My kids as well!
For intermittent asthma, they were on/off inhalers and oral prednisone tapers which would routinely stunt their growth for a few months at a time. They are completely OFF everything...unless I go on vacation...when Daddy forgets. *aha*
Vitamin D and Athletic Performance
Dr. Cannell has written about the benefits of Vitamin D and athletic performance on his non-profit Vitamin D Council website as well as a recently summarized review article. Vitamin D is pro-hormone and a potent steroid. Don't underestimate it's powers. Vitamin D actually increases testosterone, estrogen, thyroid hormone and is a steroidal precursor to other sex and cholesterol hormone derivatives. It has actions in every organ, tissue and cell from the bottom of your hair follicles to the tip of your toe nails.
He has taken the time to review older German and Russian scientific literature on observations and studies on the influence of sun exposure/UV box exposure, seasonality effects on athletic performance.
Here are some of his thoughts from his website:
Improving Athletic Performance
"Then I remembered that several readers had written to ask me if vitamin D could possibly improve their athletic performance. They told me that after taking 2,000–5,000 IU/day for several months they seemed somewhat faster, a little stronger, with maybe better balance and timing. A pianist had written to tell me she even played a better piano, her fingers moved over the keys more effortlessly! Was vitamin D responsible for these subtle changes or was it a placebo effect? That is, did readers just think their athletic performance improved because they knew vitamin D was a steroid hormone precursor?
The active form of vitamin D is a steroid (actually a secosteroid) in the same way that testosterone is a steroid. It is also a hormone (hormone: Greek, meaning "to set in motion") in the same way that growth hormone is a hormone. Steroid hormones are substances made from cholesterol that circulate in the body and work at distant sites by setting in motion genetic protein transcription. That is, both vitamin D and testosterone set in motion your genome, the stuff of life. While testosterone is a sex steroid hormone, vitamin D is a pleomorphic steroid hormone.
All of a sudden, it didn't seem so silly. Certainly steroids can improve athletic performance—although they can be quite dangerous. In addition, few people are deficient in growth hormone or testosterone, so athletes who take sex steroids or growth hormone are cheating, or doping. The case with vitamin D is quite different because natural vitamin D levels are about 50 ng/mL and since almost no one has such levels, extra vitamin D is not doping, it's just good treatment. I decided to exhaustively research the medical literature on vitamin D and athletic performance. It took me over a year.
To my surprise, I discovered that there are five totally independent bodies of research that all converge on an inescapable conclusion: vitamin D will improve athletic performance in vitamin D deficient people (and that includes most people). Even more interesting is who published the most direct literature, and when. Are you old enough to remember when the Germans and Russians won every Olympics in the '60s and '70s? Well, it turns out that the most convincing evidence that vitamin D improves athletic performance was published in old German and Russian medical literature."
Is Vitamin D Supplementation PALEO?
Is... indoor-living... uhh... Paleo??
Um...hell-o . . . Supplementation provides what we cannot obtain in our daily living whether it is because we have to make a living INDOORS or we live above the 37th latitude in Northern Cal where UVB radiation is fairly negligible for nearly half the year. UVA (from tanning booths or sun, the wavelength which deeply penetrates glass and car windows and skin) does not unfortunately activate Vitamin D in the skin. My skin tone is dark in the summer therefore with sun exposure, for me, a high likelihood exists that the melanin pigmentation in fact blocks substantial UVB activation as a protective mechanism. It was not surprising to me in retrospective to find that the blood level was TOTALLY deficient at the end of Summer 2007 at 20 ng/ml, which was 400% away from the goal 80 ng/ml!
HOLY CR*P BATMAN.
No wonder I felt like S H * T.
For... 2+ decades of my LIFE.
The first winter...wow... I was on Vitamin D, I had the best running and half-marathons I've ever had (less struggling, less shortness of breath, less fatigue, better times) and... no asthma. Easy wt loss. (Did I say... EASY weight loss?) No breathing difficulties. No metered-dose-inhalers (MDIs). No coughing. Annually for the prior 3 yrs, I suffered from annual bronchitis where coughing fits sorta debilitated me for 6 to 8 wks at a time. (I thought it was from getting 'old'). Turned out the synthetic contraceptive I was on likely triggered the lack of protective natural estrogen, and blah blah blah. Anyhow, the vitamin D cured my (poss iatrogenic) bronchitis. No more antibiotic courses (which didn't work anyway). No more coughing spells (which tended to... frighten patients). No more sleeping problems. No more nasty codeine.
Is uninterrupted breathing important for athletic performance?
Are albuterol, salmeterol (Serevent, Advair) and other asthma beta-adrenergic agonist treatments banned by the IOC (Int'l Olympic Committee)?
Now you know why I roar and RAGE about the D's... Davis and the steroid 'D'.
Do the . . . right 'ROID. . . V I T A M I N - D3