Results 11 to 20 of about 40,513 (41)

Vitamin B-12 deficiency is very prevalent in lactating Guatemalan women and their infants at three months postpartum.

Journal of NutriLife, 1997
Vitamin B-12 status was evaluated in 113 Guatemalan women and their infants at 3 mo of lactation. Plasma vitamin B-12 was deficient or low in 46.7% of the mothers, and holotranscobalamin II (holo TC II) concentrations were low in 32.3%, which may ...
J. Casterline, Lindsay H. Allen, Marie T Ruel   +2 more
semanticscholar   +1 more source

Vitamin B-12 deficiency and malabsorption are highly prevalent in rural Mexican communities.

American Journal of Clinical Nutrition, 1995
Vitamin B-12 status of rural Mexicans was evaluated in two studies, 6 y apart. In the first, a single blood sample was collected from children and adults, including pregnant and lactating women.
L H Allen, J L Rosado, J. Casterline, H. Martínez, P. López, E. Muñoz, A. Black   +6 more
semanticscholar   +1 more source

Vitamin B-12 Deficiency in Children Is Associated with Grade Repetition and School Absenteeism, Independent of Folate, Iron, Zinc, or Vitamin A Status Biomarkers.

Journal of NutriLife, 2015
BACKGROUND Micronutrients are essential to neurocognitive development; yet their role in educational outcomes is unclear. OBJECTIVE We examined the associations of micronutrient status biomarkers with the risk of grade repetition and rates of school ...
Minh-Cam Duong, M. Mora-Plazas, C. Marín, E. Villamor   +3 more
semanticscholar   +1 more source

Persistence of neurological damage induced by dietary vitamin B-12 deficiency in infancy

Archives of Disease in Childhood, 1997
A case is reported of a 14 month old boy with severe dietary vitamin B-12 deficiency caused by his mother’s vegan diet. Cinical, electroencephalography (EEG), and haematological findings are described.
U. von Schenck, C. Bender‐Götze, B. Koletzko   +2 more
semanticscholar   +1 more source

Prevalent vitamin B-12 deficiency in twelve-month-old Guatemalan infants is predicted by maternal B-12 deficiency and infant diet.

Journal of NutriLife, 2007
Approximately one-third of low-income women and children studied in Guatemala are reported to have deficient (
Katharine M. Jones, M. Ramírez-Zea, Clara Zuleta, L. Allen   +3 more
semanticscholar   +1 more source

Vitamin B-12 deficiency in the elderly: current dilemmas.

American Journal of Clinical Nutrition, 1997
Vitamin B-12 deficiency is present in up to 15% of the elderly population as documented by elevated methylmalonic acid with or without elevated total homocysteine concentrations in combination with low or low-normal vitamin B-12 concentrations.
S. Stabler, J. Lindenbaum, R. Allen
semanticscholar   +1 more source

Hyperhomocysteinemia and vitamin B-12 deficiency in elderly using Title IIIc nutrition services.

American Journal of Clinical Nutrition, 2003
BACKGROUND The effect of the folate food fortification program on the prevalence of hyperhomocysteinemia in the older population with coexisting vitamin B-12 deficiency is not known.
M. Johnson, N. Hawthorne, W. Brackett, J. Fischer, E. Gunter, R. Allen, S. Stabler   +6 more
semanticscholar   +1 more source

Metabolic evidence of vitamin B-12 deficiency, including high homocysteine and methylmalonic acid and low holotranscobalamin, is more pronounced in older adults with elevated plasma folate.

American Journal of Clinical Nutrition, 2009
BACKGROUND An analysis of data from the National Health and Nutrition Examination Survey indicated that in older adults exposed to folic acid fortification, the combination of low serum vitamin B-12 and elevated folate is associated with higher ...
Joshua W. Miller, Marjorie G. Garrod, L. Allen, M. Haan, R. Green   +4 more
semanticscholar   +1 more source

Folate-vitamin B-12 interaction in relation to cognitive impairment, anemia, and biochemical indicators of vitamin B-12 deficiency.

American Journal of Clinical Nutrition, 2009
Previous reports on pernicious anemia treatment suggested that high folic acid intake adversely influences the natural history of vitamin B-12 deficiency, which affects many elderly individuals.
J. Selhub, M. S. Morris, P. Jacques, I. Rosenberg   +3 more
semanticscholar   +1 more source

Nitrous oxide myelopathy with functional vitamin B 12 deficiency

BMJ Case Reports, 2019
Recreational use of nitrous oxide as a ‘legal high’ is increasing in the UK. Physicians should be ‘street wise’ to this increasing prevalence and aware of the potential neurological complications which may result from misuse.
J. Williamson, S. Huda, Dinesh Damodaran
semanticscholar   +1 more source