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Information about Vitamin-D3 (Cholecalciferol).

When Vitamin-D is mentioned it is going to refer to Vitamin-D3 unless it is clear from context that it is referring to both Vitamin-D2 and Vitamin-D3.

Where ever possible both sets of alternate units to indicate serum concentrations and dose amounts will be used to make the text easier to parse for readers from all regions.

(Cholecalciferol)
This is to be a collection of information relating to Vitamin-D3, this has the chemical name of Cholecalciferol and is considered a sterol pro-hormone. It was categorised as a vitamin initially before the UVB mediated synthesis in skin was established, this designation has firmly persisted and has good and bad implications. A lot of information is available on the web and a good starting place is Wikipedia. This site is intended to provide information that is available somewhere but many or even most people will not know that the information even exists. The goal is to have a answers to questions that you did not know to ask.

The main reason for my interest in Vitamin-D is the huge potential that proper management of population wide supplementation could have on human health and health care costs due to the global Vitamin-D deficiency pandemic. Because there is money involved in health care this issue will be considered here from a few angles, some of the ideas will be controversial but this is because the amount of money involved is so massive.

I make a note here to indicate that this site is still in its infancy and the layout is sure to change and evolve. I will be doing much of the editing myself but will welcome other editors who have similar goals. I hope to leave this in a state that will provide suitable information to assist advocates and activists to promote the rational discussion about Vitamin-D and putting false myths to rest. A lot of medical research will be quoted from and global programs will be mentioned.

Many of these topics will open onto more detailed pages.

Deficiency
Many causes for deficiency

Protective

 * Lighter skin
 * Rare mutations

Aggravating

 * Darker Skin
 * Rare Mutations

Disease
Gall bladder removal
 * Diabetes
 * Kidney disease

Global

 * Solar cycles
 * Air Pollution
 * Urbanisation
 * Polar migration / Latitude

Mean Vitamin D levels in 19 European Countries & COVID-19 Mortality over 10 months

Winter

 * UVB inadequacy
 * Dressing for cold

Summer

 * Avoiding

Work place
Space Arctic Submariner Shift worker , Institutionalised ====

Sun
Tropospheric Emission Monitoring Internet Service database

Ambient UVB Dose and Sun Enjoyment Are Important Predictors of Vitamin D Status in an Older Population1–3

Fiona O�Sullivan,4 Eamon Laird,5 Dervla Kelly,4 Jos van Geffen,6 Michiel van Weele,6 Helene McNulty,7 Leane Hoey,7 Martin Healy,8 Kevin McCarroll,9 Conal Cunningham,9 Miriam Casey,9 Mary Ward,7 JJ Strain,7 Anne M Molloy,5 and Lina Zgaga4*

doi:10.3945/jn.116.244079

https://fastrt.nilu.no/VitD.html

Testing
Michael Hollick made advances in metabolite testing

VitaminD
Rare

25(OH)D3
Vitamin D 25-oh total (Testing Vitamin D2 & D3) £119.00
 * Mail in tests
 * Thin-film chroma assay
 * Antibody
 * HPLC-MS/MS
 * UV fluorescence photometry (Zivak)

Some comparative information. August 2018 Product Focus: Vitamin D

1,25(OH)2D3
Rare

Saliva
Mail in tests

Benefits
Please go to Vitamin D Wiki for the research on all the diseases that are better managed with Vitamin-D. This focuses on the regular benefits to health from natural levels with some obvious easy to demonstrate reversible conditions that can be used to advocate.

Congregate Living
[http://militaryhealth.bmj.com/ Does vitamin D supplementation prevent SARS-CoV-2 infection in military personnel? Review of the evidence]

Cancer
Dingli Song 2019 Vitamin D intake, blood vitamin D levels, and the risk of breast cancer: a dose-response meta-analysis of observational studies

Pregnancy
Reduce Preeclampsia

Dental

 * Reduce mouth bacteria
 * Promote implant ossification

Acute toxicity
Cholecalciferol is still used as a rodent poison, the idea is that because it is more toxic to rodents than other beneficial animals it has some value. The doses required to LD50 are so much greater than physiological or therapeutic doses it is not to be compared with supplement dosing dangers.

Bolus
100'000

Metabolites
Faster absorbtion Prompt action Lack of fat buffering

Food
Carnivore livers, excessive fish liver oil.

Sun
Practically not possible, self regulating. Sunburn and skin ageing more of a concern from excessive sun

Journals
Ilkka Laaksi 2010 Vitamin D Supplementation for the Prevention of Acute Respiratory Tract Infection: A Randomized, Double-Blinded Trial among Young Finnish Men

Web
Vitamin D Health

vitamin d council/

Advocates
There are many advocates who promote Vitamin-D, their reasons vary a lot and they may share other goals and beliefs that are opposing or orthogonal to other advocates, this does not detract from the many sound and important reasons for advocating the correct use of Vitamin-D. Here is a list of advocates who have agreed to list their names here and some have edited these pages. It does not take much to be a Vitamin-D advocate, you have six (6) main pathways, you may promote: If you bring this important information to the notice of others you can call yourself a Vitamin-D advocate, that is all it takes to make the world a better place. You may appreciate all the main reasons or just one, you may have many other issues that are also relevant and you will see many of them described here.
 * physiological serum targets,
 * physiological supplement doses,
 * nature identical forms (D3 as opposed to D2),
 * regular daily dosing
 * the need for co-factors
 * myths of great harm

Some of the advocates here will be prepared to respond to reasonable questions and try to assist you with understanding how things work. Some have busy schedules and do not have time to respond personally but you may find they have published relevant information on social media, medical journals, mass media or published books. There are a LOT of other advocates that do not appear here and some other lists will be linked here as they become available.

Each of these advocates will have their own reasons and strengths for advocating, some are from the medical field while others are simple citizen researchers.

Europe

 * Finland, Kalle Pihlajasaari, Facebook, LinkedIn. Recomendation, Suositus citizen researcher, wiki editor.
 * Finland, Mikko Paunio, Facebook, Sulkutoimet pois ivermektiini ja d-vitamiini kayttoon, Väestön D-vitamiinitasot nopeasti kuntoon ja Suomi normaaliksi, Is Vitamin D a Silver Bullet? ministerial advisor, Doctor.
 * Finland, Veli-Jussi Jalkanen, Facebook, activist. D-vitamiinia tarvitaan THL:n suosituksia enemmän
 * Finland, Iilari Paakkari, Facebook, activist. Veren D-vitamiinin pitoisuus on käänteisessä suhteessa koronainfektion ja sen vakavuuden riskiin, Reseptori: D-vitamiini on hormoni ja tärkeä sellainen
 * Finland, Pasi Malmi Facebook, Ruokavirasto, THL ja VRN vaarantavat suomalaisten terveyden viestimällä D-vitamiinista epätieteellisesti hallintotieteiden tohtori.
 * UK, Dr David Grimes, Covid-19 & Vitamin D – Haredi, BAME, Obese, Elderly at risk, Vitamin D and Cholesterol : Book details consultant physician and gastroenterologist

Historical errors
The IoM has a lot to answer for. They proposed reference values for those that fortify food products with Vitamin-D. They made assumptions based on physiological minimum needs that were required to hold off Rickets. Then they were cautious and determined incorrectly the dose that would maintain 95% of the population above this minimum level. These errors have been shown but there has never been a official correction to their papers. These errors were propagated into other heath bodies and used to drive clinical practice and treatment for deficiencies. They linger in all corners of the world still today even though they are based on shown mathematical errors.

Research negligence
Much of the nutrition research is left in the hands of University research centres and small observational trials by interested individuals. Funding is much less than what is received for drug trials in general. There are simple reasons for this that are not really controversial, Private companies have little reason to fund research that will reduce their profits, in simple terms we can say that it would be NEGLIGENT for a drug company COO or CEO or director whoever to authorise research into nutrition or supplements as there is NO resulting income from positive results. They do occasionally seem to be involved in research that has poor results but these studies and papers are often of such a calibre that they should be withdrawn in shame or at least the conclusions should be neutral.

Measurement variability
The enduring failure in Vitamin-D research is the misguided belief in a inverse "J" or "U" shaped curve in the benefits of dosing and the turning point has been assumed to be at a level much below natural levels which is physiologically unbelievable. This belief is a result of just a few published papers that have since been shown to have errors in data collection due to less than linear measurement systems for determining the 25(OH)D concentrations.

Ergocalciferol / Vitamin-D2
At various points in history the wholesale cost of Ergocalciferol has been below that of Cholecalciferol and it has been proposed and implemented as an alternative, these days the costs are similar. It has very similar chemical structure and also has similar function in humans. However the differences are not insignificant. Firstly the life time of Vitamin-D2 and the metabolites differ from those of Vitamin-D3. The effect is less than the same mass of Vitamin-D3 by a factor of 2 to 3 in various trials. For maternal expression in breast milk it did not provide the function that Vitamin-D3 did for the lactating infant. Some say it is less toxic than Vitamin-D3 but this hardly matters, you need to take more and you should not be near any toxic doses when seeking physiological doses or serum levels. Another added concern is that current measurement techniques do not give accurate results if you have both metabolites in your serum as the sensing peaks overlap. There is one company (Zivak) that makes a dedicated high speed blood analyser that seems to be up to the task but it is a substantial investment if you do not have enough use for it.

It has been promoted as a vegetarian alternative being usually prepared from fungal or yeast sources and is an option though vegan sources of Vitamin-D3(precursors) have been isolated and prepared from lichen and seaweed in recent years.

The Vitamin-D debate seminar came to the conclusion that it should be avoided due to the many negative points and no additional benefits even when the negative points are compensated for.

In spite of this it is in common use in the USA for humans as a supplement and also to be found many of the high potency forms used in treatment and medical trials which can have poor results for this reason as well. "In 2018, it was the 61st most commonly prescribed medication in the United States, with more than 12 million prescriptions."

"in France, China and the USA, where vitamin D2-containing supplements are frequently used"  LC–MS/MS based 25(OH)D status in a large Southern European outpatient cohort: gender- and age-specific differences

"Vitamin D2 potency is less than one third that of vitamin D3. Physicians resorting to use of vitamin D2 should be aware of its markedly lower potency and shorter duration of action relative to vitamin D3.", "Another barrier is the lack of a high-potency therapeutic vitamin D3 preparation in the United States. In Europe, several high-potency preparations are available, some used for “stoss” therapy in clinical trials" Vitamin D2 Is Much Less Effective than Vitamin D3 in Humans

It is important to remember that Vitamin-D2 does not work at all in farmed fowls, they develop rickets and fail to thrive if the only source of Vitamin-D is Vitamin-D2 from feed. While Vitamin-D2 has been used for other animal feeds it is not favoured due to the extra management of two supplements and need to ensure that chicken feed does not get the wrong supplement.

Piedmont region in Italy.
Piedmont introduces vitamin-d to treat patients at home

Vitamin-D for All
Over 200 Scientists & Doctors Call For Increased Vitamin D Use To Combat COVID-19

France doctors and learned bodies
73 experts and 6 learned societies call for population wide supplementation. Covid-19 : 73 experts lancent un appel pour qu'on donne de la vitamine D à la population française

Treatment regimes
The Functional Medicine Approach to COVID-19: Virus-Specific Nutraceutical and Botanical Agents

Unit conversions
1ug of Cholecalciferol = 40IU of Anti-Rachitic effect 1ng/ml 25(OH)D = 2.5nmol/l

Glossary
25(OH)D : 25 Hydroxy Vitamin-D 25(OH)D2 : 25 Hydroxy Vitamin-D2, 25-hydroxyergocalciferol 25(OH)D3 : 25 Hydroxy Vitamin-D3, calcifediol, 25-hydroxycholecalciferol 1,25(OH)2D3 : 1,25 Dihydroxy Vitamin-D3, calcitriol, 1,25-dihydroxycholecalciferol ug : μg, mcg, microgram mg : milligram IU : International Units nmol/l : nano-mole per litre ng/ml : nanogram per millilitre

Endocrine Society
USA, Sets guidelines for targets and supplementation for good health and clinical treatment.

IoM
America, Institute of Medicine, sets guidelines for conservative daily allowances to guide food fortification.

THL
Finland, Department of Health and Welfare (THL, Terveyden ja Hyvinvoinnin laitos), sets guidelines for daily vitamin and mineral allowances and safe limits. Is subservient to Food Agency (Ruokavirasto). Which is subservient to the State Nutrition Advisory Board (VRN, Valtion Ravitsemusneuvottelukunta)

The current serious controversy in Finland on the prohibition on publishing medical research Elintarvikkeiden markkinoiminen koronaviruksen ehkäisyyn tai hoitoon tulee lopettaa välittömästi