Human dietary deficiency of vitamin B12.
نویسندگان
چکیده
منابع مشابه
Effects of Vitamin B12 in Neonates and Young Infants
Vitamin B12 (cobalamin) is an essential coenzyme for nucleic acid synthesis. Animal protein is the major dietary source of vitamin B12. Deficiency of vitamin B12 leads to megaloblastic anemia, degeneration of the brain, spinal cord, peripheral nerves, and abnormalities of epithelial tissues. Two factors are necessary for the cure of megaloblastic anemia: one in food (extrinsic factor) and one i...
متن کاملNutritional status in school children: Deficiencies in iron, folic acid and Vitamin B12
This study was conducted to assess deficiencies in iron, folic acid and Vitamin B12 as well as nutritional status in a sample of school-age children in Turkey. The study was conducted on 172 children (boys: 80; girls: 92) aged 6 to 13 years from two different primary schools in the capital city of Turkey, Ankara. Data were obtained on children anthropometry, 24 dietary recalls, hematological an...
متن کاملDietary vitamin B12 deficiency in an adolescent white boy.
Dietary deficiency of cobalamin resulting in tissue deficiency in white individuals is unusual. However, several patients with dietary deficiency who were neither vegan nor Hindu have been described. This report describes the case of a 14 year old boy who was a white non-Hindu with a very low intake of cobalamin, which was not apparent until a detailed dietary assessment was performed. The pati...
متن کاملSevere but Not Moderate Vitamin B12 Deficiency Impairs Lipid Profile, Induces Adiposity, and Leads to Adverse Gestational Outcome in Female C57BL/6 Mice
Vitamin B12 deficiency is widely prevalent in women of childbearing age, especially in developing countries. In the present study, through dietary restriction, we have established mouse models of severe and moderate vitamin B12 deficiencies to elucidate the impact on body composition, biochemical parameters, and reproductive performance. Female weanling C57BL/6 mice were fed for 4 weeks: (a) co...
متن کاملIf high folic acid aggravates vitamin B12 deficiency what should be done about it?
The most common cause of vitamin B12 deficiency in older people is malabsorption of food-bound vitamin B12. Thus, it is suggested that the recommended daily allowance of 2.4 microg/d be met primarily with crystalline vitamin B12, which is believed to be well absorbed in individuals who have food-bound malabsorption. There is concern that high intakes of folic acid from fortified food and dietar...
متن کاملGeneralised hyperpigmentation in vitamin B12 deficiency.
In developing countries like India, nutritional deficiencies are prevalent and hyperpigmentation due to protein energy malnutrition, zinc deficiency and pellagra are common. Indian women, especially vegetarian are prone to vitamin B12 deficiency. Vitamin B12 deficiency can present as anaemia, neurological defect, gastrointestinal symptoms or dementia. Hyperpigmentation as the first presentation...
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ورودعنوان ژورنال:
- The American journal of clinical nutrition
دوره 3 5 شماره
صفحات -
تاریخ انتشار 1955