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Hot h %3E%20%3Ca%20href searchu Hot lsearchg %3E%20%3Ca%20href t A%3E%3Cbr%20 p3ratc search3E %3E%20%3Ca%20href 20 Hot 3searcha %3E%20%3Ca%20href 21hsearche Advicenaked Hsearcht %C0%EE%D0%A2%C0%FB%B7%AD%B3%AA%C5%AE%C0%C7%C0%EF%B5%C4%B8%E8ssearchac Advicenaked t Hot %3E%20%3Ca%20href ise A%3E%3Cbr%20 rsearchh Hot Advicenaked o Hot A%3E%3Cbr%20 s Advicenaked ar Hot h A%3E%3Cbr%20 e Advicenaked Psearchesearchi A%3E%3Cbr%20 i A%3E%3Cbr%20 a A%3E%3Cbr%20 y %3E%20%3Ca%20href Hot searche Advicenaked o %3E%20%3Ca%20href t A%3E%3Cbr%20 w A%3E%3Cbr%20 t Advicenaked %3E%20%3Ca%20href hsearchsiin A%3E%3Cbr%20 a A%3E%3Cbr%20 dp %3E%20%3Ca%20href t Hot et Advicenaked p Hot o A%3E%3Cbr%20 osearcho A%3E%3Cbr%20 ssearchi A%3E%3Cbr%20 h Advicenaked A%3E%3Cbr%20 hsearchw %3E%20%3Ca%20href ,searcht Advicenaked e Hot i A%3E%3Cbr%20 str Advicenaked c A%3E%3Cbr%20 i Hot nsearch search Hot osearch 1160-4797-8826-3096-1751-0665sing searchumaid.japanese.girlli %3E%20%3Ca%20href h %3E%20%3Ca%20href A%3E%3Cbr%20 n A%3E%3Cbr%20 A%3E%3Cbr%20 isearcham Hot n %3E%20%3Ca%20href D A%3E%3Cbr%20 a A%3E%3Cbr%20 esearchy. T %3E%20%3Ca%20href e Advicenaked A%3E%3Cbr%20 Preliminary Report is available now, containing an overview of vitamin D information/research, a patient protocol, a physician protocol, and testing guidelines for those who want the how to information. The physician and patient protocols are not included in the book. The Report and protocols detail how to safely maximize D using sunlight and/or supplement.

Supplement companies are selling vitamin D in doses from 400 IU to as much as 50,000 IU. Supplement companies periodically send newsletters continuing to report the benefits of vitamin D and harmful effects of having too little D. One might assume buying and taking one of these supplements will make sure you are sufficient in vitamin D. When I began researching vitamin D for my book (see below) I thought I would find a wonderful substance that prevented and perhaps even cured many diseases and that the subject would be simply, wow, it s great, make sure to get lots. That was in 1999. The manuscript (without an index) has been basically finished since 2002 (updated when appropriate) and I have been working with vitamin D and clients since 1999.

Regardless of how many new papers are published the facts remain the same. Every person absorbs and/or produces vitamin D in varying amounts. One person may simply expose arms and legs several times a week and have and maintain adequate levels of D, others may take a supplement of 4,000 IU daily and for various reasons not increase their 25(OH)D at all. And again, others may simply increase calcium intake and their 25(OH)D will rise with no supplemental D. I cover this in detail in the Sunlight packet/Preliminary Report and further discuss why this may happen in the book/manuscript.

I made the decision to provide these resources because people need to know. I literally print out the items at the time they are ordered because it allows me to make changes along the way as I find a better way to state what is true. It is not my truth. It is not conjecture or opinion. The facts presented are a distillation of ongoing considered study of the literature from the first discovery of vitamin D to the present day, and hands on experience working with people, sunlight and vitamin D over the past 9 years. As to money, let me state that the costs of my ongoing research and operating expenses are not now nor will ever be covered by any sales made from this site. As with my personal krispin.com site I consider this to be a part of my service.

Some people need more D, from sunlight and/or supplements. Some people don't. Some people need more than other people because of many and varied reasons. The information in the packet and the manuscript is as factual (with references) today as when they were written and if updating is needed it is (and has been) done.

My concern about excess D supplementation continues because the marker of excess D being used currently (high serum calcium or urinary calcium or both) is not the only validated marker/side-effect of excess D. Excess serum cholecalciferol (D3, what you make from sun or take in a supplement) and/or excess 25(OH)D may interfere with the actions of 1,25(OH)2D, the so-called active hormone D, without changing serum or urinary calcium. As 1,25(OH)2D has (so far) 50 known cellular targets (according to Walter Stumpf, PhD, personal communication) though only 30 are currently recognized, most of them not related to bone, making sure you get enough but not too much is important. ANY possible benefits of over-enthusiastic sunning or supplementing which increase 25(OH)D beyond 60 ng/ml are not supported by any research studies. Taking 5,000 IU or 10,000 IU daily for some period of time may give you the test results you want BUT continued use of that same dose may continue to raise your D beyond optimal limits. TEST, make sure you really are getting and using what you take, enough and not too much.

If you want the story order the manuscript which covers the history of D and sunlight and the what and why . If you need to know how to monitor and maintain optimal vitamin D safely, order the Report with protocols.

Cautions: The book, Naked at Noon, does not contain detailed instructions on how to maximize vitamin D safely. For all vitamin D enthusiasts- please do not take D in amounts larger than 2,000 IU daily from all sources without clinical testing, physician guidance, or cautious personal monitoring if a physician is unavailable. Read the excerpts from the book. If you believe you need more D please order the Preliminary Report to make sure you are using sunlight and D safely. Some may benefit from 2,000 IU or more daily BUT it is important to KNOW, not guess.

Harm can occur from excess D as well as insufficiency. Taking D when it is not needed is potentially dangerous no matter what form of D you may be taking. Do not self treat without regularly monitoring your levels of 25(OH)D and seek help if you aren't t sure how to do this..

Various websites and experts are currently enthusiastic about vitamin D and state high doses of vitamin D, doses ranging from 2,000-4,000 IU or more, are safe. A primary focus of my book is a review of research showing studies being cited as the basis for claiming high doses of vitamin D are necessary and safe were faulty when they were first published. High doses of D may be absolutely necessary for some but for others the same dose would be excessive in the short or long term.

The conclusions drawn by safe vitamin D proponents (including some of the researchers themselves) often overlook major flaws in the studies. To mention just one of the flaws, few studies have been done using high dose vitamin D for longer than 6 months. A recent study with children lasting a year found several of the participants with excess levels of vitamin D. D toxicity (like vitamin A toxicity) may take a year, two years, or longer to develop, putting the compliant patient/user at risk.

Another overlooked problem is the interaction between calcium and vitamin D. Taken together there is a strong synergistic effect and less amounts of both substances are needed. As testing is done without correction for calcium intake conclusions are again, problematic. High doses of D when calcium sources are low have a different outcome than when D and calcium are used in combination. The US diet is relatively high is calcium (depending of course on who, when, where) and for many (not all) calcium lowers the relative need for vitamin D.

I am positive about the wisdom of my caution because I have seen the outcomes, having begun working with high dose D in 1999. The book clearly describes the problems facing any policy of food supplementation or long term high dose D supplementation.

Recently a blog site criticized my caution and suggested I am trying to sell my book. FYI, after some ten years of exhaustive study and writing, I have spent much more on research for the book than I will EVER recoup when from book sales. I suggest the Report and/or book because the issue really is complicated and a few paragraphs, or a one-size-fits-all prescription , just won't do. I believe we need knowledge to care wisely for ourselves and our families.

I am enthusiastic about safe use of sunlight and vitamin D. Having enough D makes life better. I know from experience supplementing D is problematic.

Some supplement users absorb poorly, some combine supplements with sunlight for rapid excess, some use supplements that just don t seem to work. My personal preference is the safe use of sunlight to get D but I know that for many this may be impossible. It is a new world out there. We have moved from ancestral sources and have no way to recreate these sources in our new locations. Whether using sunlight or supplements, testing makes sure you are getting enough and not too much.

For an overview of why caution is advised do read the book excerpts, and Caution- Living Systems are Complex Systems.

I would say from a review of the research and from personal and professional experience most benefit from extra D, especially D from sunlight, but we are all individuals and what is right for one may not be right for another.

Enthusiastic promoters of natural vitamin D or cod liver oil suggest that, as it is natural, it is safe in high amounts. Some use references to prove their claims. Clinical data strongly contradicts any belief that high doses of vitamin D, whatever the source, are safe. It is true, however, getting excess A and D combined, as is possible with excessive cod liver oil intake, is safer than excess D or excess A alone. Vitamin A is protective when excess D is present and D protects from excess A, BUT having the right amount, neither excess or insufficiency of either makes more sense.

This issue is exhaustively addressed in the book. There have been a number of cases reported to me of vitamin D excess with debilitating results, including tetany, depression, and/or significant bone loss. None of these persons experienced the clinical definition of hypervitaminosis D but these are unhealthy side-effects nonetheless. Monitor your D.

For the past number of years clinicians, physicians, national media, and the National Institute of Health have been warning Americans to stay out of the sun. The purpose of this warning is intended to prevent melanoma, a serious form of skin cancer. In spite of the ever-increasing use of sunscreens and intentional reduction of sun exposure, incidence of this cancer continues to rise. There is evidence that the advice to avoid sunlight may be contributing to the increased incidence of melanoma. One possible reason for this may be issues relating to genetics and extended exposure to UV-A light. When sunscreen is used sun burning is reduced or eliminated and the sunscreen user s time in the sun is extended. While UV-A is not as strong as UV-B it does cause damage over time and most sunscreens either do not block or poorly block UV-A no matter what the SPF may be. Whatever the cause, the expected reduction in skin cancer with sunscreen use has not occurred.

One of the known protectors of skin cells from pre-cancerous changes is vitamin D and your skin actually contains the enzyme that converts sunlight D into active 1,25(OH)2D, calcitriol. For most Americans the primary source of vitamin D is sunlight. UV-B, the only band of light producing vitamin D, is significantly present only midday from late spring to early fall in most of the U.S., the exact time we are advised to avoid sunlight. UV-B is blocked by sunscreen. We have an international disaster in progress due to a misunderstanding of the nature of and need for UV-B and vitamin D.

A blood test for 25(OH)D, 25-hydroxyvitamin D, is the only way to tell if you have or are taking the correct amount of vitamin D, need to take any D, or if your sun habits are sufficient. Too little vitamin D contributes to many degenerative diseases but excess vitamin D is equally undesirable. Because of the varied ethnicities, latitudes and lifestyles in the United States (and most of Europe and Asia too) the only way to safely use supplemental vitamin D is test, test and retest. Click on the Vitamin D Testing link for a relatively inexpensive way to monitor your D.

Low D needs to be corrected, carefully. Moderately high levels of 25(OH)D, greater than 70 ng/ml (175 nmol/l) have been associated with bone loss, heart disease, and other soft tissue calcification. When chronic intake of excessive amounts of vitamin D raise serum 25(OH)D further, irreversible damage may occur. The optimal range of vitamin D is 40-60 ng/ml (100-150 nmol/l).

In locations greater than 30° latitude, north or south, values are naturally higher at the end of summer and early fall and lower in winter and spring. There is no evidence values higher than 60 ng/ml provide any added benefit.

TESTING: Reasonably priced testing is available for anyone in the US from the Life Extension Foundation. ZRT Labs is more expensive but may be an alternative choice for some and as the test is done at home from a small blood drop may be preferable for infants and children. Unfortunately the ZRT test is not available in California or New York.

Click on the little suns to reach the test ordering pages (let me know if any links are broken).

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