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"Study finds inadequate levels of Vitamin D may significantly increase risk of stroke, heart disease and death MURRAY, UT - While mothers have known that feeding their kids milk builds strong bones, a new study by researchers at the Heart Institute at Intermountain Medical Center in Salt Lake City suggests that Vitamin D contributes to a strong and healthy heart as well - and that inadequate levels of the vitamin may significantly increase a person's risk of stroke, heart disease, and death, even among people who've never had heart disease. For more than a year, the Intermountain Medical Center research team followed 27,686 patients who were 50 years of age or older with no prior history of cardiovascular disease. The participants had their blood Vitamin D levels tested during routine clinical care. The patients were divided into three groups based on their Vitamin D levels - normal (over 30 nanograms per milliliter), low (15-30 ng/ml), or very low (less than 15 ng/ml). The patients were then followed to see if they developed some form of heart disease."

"Cholecalciferol is a form of Vitamin D, also called vitamin D3 or calciol.[1] It is structurally similar to steroids such as testosterone, cholesterol, and cortisol (though vitamin D3 itself is a secosteroid). One gram of pure vitamin D3 is 40 000 000 (40x106) IU, or, in other words, one IU is 0.025 μg. Individuals having a high risk of deficiency should consume 125 μg (5000 IU) of vitamin D daily"

"Ergocalciferol (Deltalin, Eli Lilly and Company) is a form of vitamin D, also called vitamin D2. It has the systematic name "(3β,5Z,7E,22E)-9,10-secoergosta-5,7,10(19),22-tetraen-3-ol". It is created from viosterol, which in turn is created when ultraviolet light activates ergosterol."

"Hypovitaminosis D is a deficiency of Vitamin D. It can result from: inadequate intake coupled with inadequate sunlight exposure (in particular sunlight with adequate ultra violet B rays), disorders that limit its absorption, conditions that impair conversion of vitamin D into active metabolites, such as liver or kidney disorders, or, rarely, by a number of hereditary disorders.[1] Deficiency results in impaired bone mineralization, and leads to bone softening diseases, rickets in children and osteomalacia in adults, and contributes to osteoporosis.[1] Osteomalacia may also occur rarely as a side-effect of phenytoin use Hypovitaminosis D is typically diagnosed by measuring the concentration in blood of the compound 25-hydroxyvitamin D (calcidiol), which is a precursor to the active form 1,25-dihydroxyvitamin D (calcitriol).[6] One recent review has proposed the following four categories for hypovitaminosis D:[7] * Insufficient 50-100 nmol/L (20-40 ng/mL) * Mild 25-50 nmol/L (10-20 ng/mL) * Moderate 12.5-25.0 nmol/L (5-10 ng/mL) * Severe < 12.5 nmol/L (< 5 ng/mL) Note that 1.0 nmol/L = 0.4 ng/mL for this compound.[8] Other authors have suggested that a 25-hydroxyvitamin D level of 75-80 nmol/L (30-32 ng/mL) may be sufficient

"With daily news reports warning of a swine flu pandemic, members have besieged our health advisors with questions about what they should do to protect themselves against the H1N1 (swine flu) virus. The good news is that Life Extension® members obtain a considerable amount of immune support via the supplements they already use, especially those taking high-dose vitamin D. An important question, however, is what one should do if they develop symptoms of a viral infection? As the days grow colder, the risks of contracting common flu and cold viruses increase. Each year, flu virus infections kill around 36,000 Americans and cause miseries for millions.1 An outbreak of the swine flu virus is expected this winter. While certain supplements (and drugs) purport to shorten the duration of a viral infection, most of them fail to provide significant relief. Over the past 28 years, Life Extension® personnel have experimented with various nutrients, hormones, and drugs in order to minimize the impact of the common cold and typical flu viruses. In this article, I will reveal what has worked for me personally to ward off common cold/flu viruses and what has been validated in the scientific literature to be effective. I will also elaborate on some aggressive prescription drug strategies to consider in the event that you contract a severe form of swine flu or other type of influenza."

Reversing bacteria-induced vitamin D receptor dysfunction is key to autoimmune disease. Waterhouse JC, Perez TH, Albert PJ. Ann N Y Acad Sci. 2009 Sep;1173:757-65. PMID: 19758226

In April of 2000 a clinical observation published in Archives of Internal Medicine caught my attention. Dr. Anu Prabhala and his colleagues reported on the treatment of five patients confined to wheelchairs with severe weakness and fatigue. Blood tests revealed that all suffered from severe vitamin D deficiency. The patients received 50,000 IU vitamin D per week and all became mobile within six weeks.1\n\nDr. Prabhala's research sparked my interest and led to a search for current information on vitamin D, how it works, how much we really need and how we get it. The following is a small part of the important information that I found.