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Nature Reviews Disease Primers, 2017
Vitamin B12 (B12; also known as cobalamin) is a B vitamin that has an important role in cellular metabolism, especially in DNA synthesis, methylation and mitochondrial metabolism. Clinical B12 deficiency with classic haematological and neurological manifestations is relatively uncommon.
Green, Ralph +11 more
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Vitamin B12 (B12; also known as cobalamin) is a B vitamin that has an important role in cellular metabolism, especially in DNA synthesis, methylation and mitochondrial metabolism. Clinical B12 deficiency with classic haematological and neurological manifestations is relatively uncommon.
Green, Ralph +11 more
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2012
Freedom from clinical diseases caused by insufficient vitamin nutriture has generally been used as the main criterion by which vitamin requirements have been defined. The term “vitamin deficiency,” therefore, simply refers to the condition of hypovitaminosis, which can be caused by inadequate supply, malabsorption, or impaired metabolism of the vitamin.
Gerald F. Combs, James P. McClung
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Freedom from clinical diseases caused by insufficient vitamin nutriture has generally been used as the main criterion by which vitamin requirements have been defined. The term “vitamin deficiency,” therefore, simply refers to the condition of hypovitaminosis, which can be caused by inadequate supply, malabsorption, or impaired metabolism of the vitamin.
Gerald F. Combs, James P. McClung
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The Lancet, 2000
In less developed countries malnutrition is the cause of more than half of child deaths and often incapacitates those who survive. Specifically vitamin and mineral deficiency costs 5% of gross national product in deaths disability and loss of productivity.
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In less developed countries malnutrition is the cause of more than half of child deaths and often incapacitates those who survive. Specifically vitamin and mineral deficiency costs 5% of gross national product in deaths disability and loss of productivity.
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Adverse Drug Reaction Bulletin, 1976
Drugs that may cause vitamin deficiency and modes of action are briefly summarized. Oral contraceptives may cause deficiencies of: Vitamin-B2 (riboflavin) low urinary levels have been observed in African women and linked to estrogen component but mechanism is uncertain; Vitamin-B6(pyridoxine) combination contraceptives disturb liver metabolism ...
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Drugs that may cause vitamin deficiency and modes of action are briefly summarized. Oral contraceptives may cause deficiencies of: Vitamin-B2 (riboflavin) low urinary levels have been observed in African women and linked to estrogen component but mechanism is uncertain; Vitamin-B6(pyridoxine) combination contraceptives disturb liver metabolism ...
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Pediatrics in Review, 2018
The published literature supports the high prevalence of supplement use in children and adolescents in the United States. Pediatricians today are faced with questions from parents and patients about the benefits, safety, efficacy, and correct dose of vitamins and minerals. In this article, we review 7 vitamins with the most clinical relevance as judged
Nancy F. Krebs, Liliane Diab
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The published literature supports the high prevalence of supplement use in children and adolescents in the United States. Pediatricians today are faced with questions from parents and patients about the benefits, safety, efficacy, and correct dose of vitamins and minerals. In this article, we review 7 vitamins with the most clinical relevance as judged
Nancy F. Krebs, Liliane Diab
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BMJ, 2014
#### Summary points Vitamin B12 is an essential cofactor that is integral to methylation processes important in reactions related to DNA and cell metabolism, thus a deficiency may lead to disruption of DNA and cell metabolism and thus have serious clinical consequences.1 Intracellular conversion of vitamin B12 to two active coenzymes ...
Susan Robinson +2 more
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#### Summary points Vitamin B12 is an essential cofactor that is integral to methylation processes important in reactions related to DNA and cell metabolism, thus a deficiency may lead to disruption of DNA and cell metabolism and thus have serious clinical consequences.1 Intracellular conversion of vitamin B12 to two active coenzymes ...
Susan Robinson +2 more
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Vitamin A deficiency and wheezing
World Journal of Pediatrics, 2010Vitamin A deficiency may increase the responsiveness of the respiratory tract and increase the risk of respiratory tract infection, resulting in airway obstruction and wheezing. This study aimed to investigate the relation between vitamin A deficiency and infant wheezing.Three ml venous blood samples were collected from 331 hospitalized children who ...
Fu-Rong Li +8 more
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Drugs, 1979
During the past 10 to 20 years it has become increasingly clear that a certain number of drugs may lead to increased vitamin requirements. However, it is unusual for symptomatic avitaminosis to develop, and then only when circumstances are present which in themselves increase the risk of vitamin deficiency.
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During the past 10 to 20 years it has become increasingly clear that a certain number of drugs may lead to increased vitamin requirements. However, it is unusual for symptomatic avitaminosis to develop, and then only when circumstances are present which in themselves increase the risk of vitamin deficiency.
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Vitamin A and Vitamin A Deficiency
2009Vitamin A is an essential factor for development, growth, health and survival. Vitamin A (retinol, 1) and its chemically and metabolically related forms retinal (2) and retinoic acid (3) play essential roles in such diverse processes as vision and cell regulation.
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