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Topic: Vitamin D

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Calciferol

Cholecalciferol

Vitamin

Vitamin E

Ergosterol

Malabsorption

Vitamin K

Rickets

Vitamin C

List of biomolecules

Skin color

Ergocalciferol

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	Vitamin D - Wikipedia, the free encyclopedia
		Vitamin D (also known as calciferol) is a hormone precursor that contributes to the maintenance of normal levels of calcium and phosphorus in the blood.
		To maintain blood levels of calcium, therapeutic vitamin D doses are sometimes administered (up to 100,000 IU or 2.5 mg daily) to patients who have had their parathyroid glands removed (most commonly renal dialysis patients who have had tertiary hyperparathyroidism, but also patients with primary hyperparathyroidism) or who suffer with hypoparathyroidism.
		Serum vitamin D, measured by the precursor, 25D, may appear to be deficient in chronic diseases in which vitamin D dysregulation occurs, because it is being depleted due to excessive conversion into the active 1,25D form by macrophages.
	en.wikipedia.org /wiki/Vitamin_D (3992 words)

	Vitamin D
		Vitamin D is an essential vitamin required for the proper formation of bones and teeth, and is involved in maintaining proper metabolism of calcium and phosphorus in the body.
		The most common result of vitamin D deficiency in children is stunted bone growth, and a disorder known as rickets (bone malformations), and in adults, osteomalacia, a weakening of bone structure leading to ease of fractures and muscle spasms.
		Supplemental vitamin D (or one of its biochemical derivatives) is usually prescribed by a physician, most commonly in pediatric cases for bone disorders resulting from deficiency of the vitamin, and in adults to a lesser degree for similar conditions.
	www.preventivehealthtoday.com /nutrition/vit_d.html (711 words)

	Dietary Supplement Fact Sheet: Vitamin D
		Vitamin D sufficiency prevents rickets in children and osteomalacia in adults, two forms of skeletal diseases that weaken bones [5-6].
		One cup of vitamin D fortified milk supplies one-half of the recommended daily intake for adults between the ages of 19 and 50, one-fourth of the recommended daily intake for adults between the ages of 51 and 70, and approximately 15% of the recommended daily intake for adults age 71 and over.
		Vitamin D emerged as a protective factor in a study of over 3,000 adults (96% of whom were men) who underwent a colonoscopy between 1994 and 1997 to look for polyps or lesions in the colon.
	ods.od.nih.gov /factsheets/vitamind.asp (5297 words)

	Linus Pauling Institute at Oregon State University
		Vitamin D is a fat-soluble vitamin that is essential for maintaining normal calcium metabolism (1).
		Vitamin D supplement use was associated with a significant reduction in the risk of developing MS in two large cohorts of women followed for at least ten years (69).
		Data from epidemiological studies suggest that conditions that decrease vitamin D synthesis in the skin, such as having dark skin and living in temperate latitudes, are associated with increased prevalence of hypertension (71).
	lpi.oregonstate.edu /infocenter/vitamins/vitaminD (4065 words)

	Vitamin D
		Vitamin D is a steroid hormone that exists in two molecular forms: vitamin D-3 (cholecalciferol) found in animal skin, and vitamin D-2 (ergocalciferol) found in yeast.
		Vitamin D is essential for calcium and phosphorus metabolism, and it is required for the normal development of bones and teeth.
		Vitamin D aids the absorption of calcium from the intestinal tract by stimulating the synthesis of calcium-binding protein in the intestinal mucous membrane.
	www.springboard4health.com /notebook/v_d.html (743 words)

	MedlinePlus Herbs and Supplements: Vitamin D
		Vitamin D is found in numerous dietary sources such as fish, eggs, fortified milk, and cod liver oil.
		The effect of vitamin D supplementation on the bone mineral density of the femoral neck is associated with vitamin D receptor genotype.
		Vitamin D supplementation during infancy is associated with higher bone mineral mass in prepubertal girls.
	www.nlm.nih.gov /medlineplus/druginfo/natural/patient-vitamind.html (6799 words)

	Vitamin D
		Vitamin D, or calciferol, is the general name for a collection of steroid-like substances including vitamin D2, ergocalciferol (fig.1) and vitamin D3, cholecalciferol (fig.2).
		In the body, the vitamin D is converted to its active hormone form by the liver and the kidney.
		Vitamin D is essential for the absorption of these substances from the small intestine, and also for the mineralization process of the bones.
	www.chm.bris.ac.uk /webprojects2002/schnepp/vitamind.html (250 words)

	Vitamin D - MayoClinic.com
		Familial hypophosphatemia is a rare inherited disorder characterized by impaired transport of phosphate and diminished vitamin D metabolism in the kidneys Familial hypophosphatemia is a form of rickets.
		Osteomalacia may result from deficiency of vitamin D in elderly patients, decreased absorption of vitamin D, patients with chronic malabsorption syndrome secondary to jejunoileal bypass, patients with partial gastrectomy, aluminum-induced bone disease, chronic liver disease, or kidney disease with renal osteodystrophy.
		Vitamin D receptors have been identified in tissues such as the breast and prostate, prompting theories that vitamin D may play a role in cancer prevention.
	www.mayoclinic.com /health/vitamin-d/NS_patient-vitamind (3906 words)

	Vitamin D
		Vitamin D prevents rickets in children and osteomalacia in adults -- skeletal diseases that result in defects that weaken bones.
		A deficiency of vitamin D can occur when dietary intake of vitamin D is inadequate, when there is limited exposure to sunlight, when the kidney cannot convert vitamin D to its active form, or when someone cannot adequately absorb vitamin D from the gastrointestinal tract.
		Vitamin D and osteoporosis: It is estimated that over 25 million adults in the United States have, or are at risk of developing osteoporosis.
	healthlink.mcw.edu /article/982088787.html (1585 words)

	Vitamin D 400
		Vitamin D, also known as calciferol, is popularly referred to as the "sunshine vitamin." Vitamin D can be synthesized in the body with appropriate exposure to the ultra-violet rays of the sun (a process called photosynthesis).
		Seniors may have some trouble maintaining vitamin D levels since most do not spend as much time in the sun, and their bodies’ ability to make and use vitamin D is less efficient.8,9,10,11,12,1,14 Geographic location is a determining factor in vitamin D deficiency: the further away from the equator, the less sunlight is available.
		In children, a lack of vitamin D causes the bones to be soft since the matrix of calcium and phosphorus does not form properly.
	www.natlife.com /PPS/D400.htm (1302 words)

	Vitamin D Medical Information
		Vitamin D is a fat-soluble vitamin that is used by the body in the absorption of calcium.
		Vitamin D promotes the body's absorption of calcium, which is essential for the normal development and maintenance of healthy teeth and bones.
		Vitamin D is also known as the "sunshine vitamin" because the body manufactures the vitamin after being exposed to sunshine.
	www.drugs.com /enc/vitamin_d.html (527 words)

	Vitamin D - Vitacost (Site not responding. Last check: 2007-10-22)
		Vitamin D plays a role in immunity and blood cell formation and also helps cells "differentiate"—a process that may reduce the risk of cancer.
		In children, vitamin D deficiency is called rickets and causes a bowing of bones not seen in adults with vitamin D deficiency.
		Vitamin D deficiency is common among people with hyperparathyroidism, a condition in which the parathyroid gland is overactive.
	www.vitacost.com /science/hn/Supp/Vitamin_D.htm (1935 words)

	Vitamin D
		Vitamin D is sometimes viewed as a non-issue for CFIDS except when following a protocol like that at marshallprotocol.com.
		Boron may be an assistant to Vitamin D. I believe that Dr. Mercola, MD recommended optimal levels for Vitamin D is correct.
		One International Unit (IU) of vitamin D is defined as the activity of 0.025 μg of cholecalciferol.
	lassesen.com /cfids/supplements/vitamin_d.htm (743 words)

	Vitamin D
		The term vitamin D should be used as a general term to describe all steroids that exhibit qualitatively the biological activity of calciol.
		Although all compounds with vitamin D activity may be described using a semisystematic steroid name [ref 4], the names tend to be cumbersome for general use.
		Vitamin D analogues where the hydroxyl group at C-3 is absent or is replaced by an amino group are named by the use of the prefix 3-deoxy (see Carbohydrate Rule 14 [ref 10]).
	www.chem.qmul.ac.uk /iupac/misc/D.html (1989 words)

	Vitamin D
		Vitamin D is formed in the skin after exposure to ultraviolet radiation and also is absorbed from the diet.
		Metabolites of vitamin D increase the intestinal absorption of calcium.
		Vitamin D deficiency is seen in patients with inadequate sunlight exposure who also ingest inadequate amounts of vitamin D. Examples are nursing home patients, breast-fed babies who don't get outside, Arabian women who move to London.
	courses.washington.edu /bonephys/opvitD.html (1074 words)

	Vitamin D - calciferol information page. All about vitamin D (also known as calciferol) and the role it plays in your ...
		Vitamin D is also referred to as calciferol and can rightly be called the sunshine vitamin, since the body, in a sunny climate can manufacture this nutrient from sunshine on your skin using cholesterol from your body to do so.
		Vitamin D in short supply is also linked to having a burning sensation in the mouth and throat, diarrhea, insomnia and visual problems.
		Vitamin D is present in fatty fish like kipper, sardines, salmon, tuna and mackerel, liver, egg yolk and butter.
	www.anyvitamins.com /vitamin-d-info.htm (595 words)

	[No title]
		Vitamin D prevents rickets in children and osteomalacia in adults, which are skeletal diseases that result in defects that weaken bones.
		Rickets and osteomalacia were recognized as being caused by vitamin D deficiency 75 years ago; their prevention and cure with fish liver oil constituted one of the early triumphs of nutritional science.
		Vitamin D increases expression of the tyrosine hydroxylase gene in adrenal medullary cells.
	www.mercola.com /2002/feb/23/vitamin_d.htm (2192 words)

	Vitamin D definition - Medical Dictionary definitions of popular medical terms
		Vitamin D: A steroid vitamin which promotes the intestinal absorption and metabolism of calcium and phosphorus.
		In a study of hospitalized patients in a general medical ward, vitamin D deficiency was detected in 57% of the patients.
		In addition, it is recommended that an intake of 200 IU of vitamin D per day be continued throughout childhood and adolescence, because adequate sunlight exposure is not easily determined for a given individual.
	www.medterms.com /script/main/art.asp?articlekey=15296 (329 words)

	Understanding Vitamin D Cholecalciferol
		The high rate of natural production of vitamin D in the skin is the single most important fact every person should know about vitamin D because it has such profound implications for the natural human condition.
		Vitamin D is a steroid hormone precursor that has recently been found to play a role in a wide variety of diseases.
		Current research indicates vitamin D deficiency plays a role in causing 17 varieties of cancer, heart disease, stroke, hypertension, autoimmune diseases, diabetes, depression, chronic pain, osteoarthritis, osteoporosis, muscle weakness, muscle wasting, birth defects and periodontal disease.
	www.vitamindcouncil.com (386 words)

	[No title]
		Michael Hollick is one of the top vitamin D researchers in the world and he has been advocating higher reference ranges, though not as high as the ones suggested here.
		Vitamin D from sunlight acts as a pro-hormone, rapidly converting into 25-hydroxyvitamin D. Many experts believe that there is no harm in the vitamin D concentrations associated with sun exposure and that such levels are probably optimal for human health.
		Elderly individuals will also have a great difficulty getting enough vitamin D from sun exposure, since an enzyme in their skin decreases with degenerative aging and, as a result, their skin has a limited capacity for producing vitamin D. Interestingly, it is impossible to get vitamin D toxicity from too much sun exposure.
	www.mercola.com /2002/feb/23/vitamin_d_deficiency.htm (3566 words)

	Vitamins
		Vitamins A, D, E, and K are all fat-soluble vitamins.
		This group of vitamins is also involved in making red blood cells, which carry oxygen throughout your body.
		Vitamin D even lends a hand to an important mineral - it helps your body absorb the amount of calcium it needs.
	kidshealth.org /kid/stay_healthy/food/vitamin.html (794 words)

	Vitamin D-3
		Vitamin D3 is cholecalciferol, one of the vitamin D family.
		Vitamin D3 is necessary for the ultilization of Calcium and Phosphorus, and for the assimilation of Vitamin A. It also has a strong immune enhancing effect and controls blood pressure.
		Adequate quantities of phytochemicals from vegetables and fruits, together with essential fatty acids, help prevent skin cancer, as does Vitamin D itself.
	www.naturalhealthconsult.com /Monographs/vitD3.html (256 words)

	Vitamin D
		Fortunately, vitamin D deficiency (not having enough) can be prevented by giving a daily supplement (drops) to babies who are at risk.
		That’s why babies who are breastfed should receive a daily supplement of vitamin D from birth until they get enough from their diet.
		A baby born to a mother who is vitamin D deficient is more likely to have a vitamin D deficiency.
	www.caringforkids.cps.ca /babies/VitaminD.htm (724 words)

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