Results 1 to 10 of about 340,270 (377)

Methylmalonic Acid and Homocysteine as Indicators of Vitamin B-12 Deficiency in Cancer. [PDF]

PLoS ONE, 2016
Normal or high serum vitamin B-12 levels can sometimes be seen in a B-12 deficient state, and can therefore be misleading. High levels of Methymalonic Acid (MMA) and Homocysteine (HC) have been identified as better indicators of B-12 deficiency than the ...
Pankaj Vashi, Persis Edwin, Brenten Popiel, Carolyn Lammersfeld, Digant Gupta   +4 more
doaj   +3 more sources

Proton Pump Inhibitors, H2-Receptor Antagonists, Metformin, and Vitamin B-12 Deficiency: Clinical Implications. [PDF]

Adv Nutr, 2018
There is clear evidence that proton-pump inhibitors (PPIs), H2-receptor antagonists (H2RAs), and metformin can reduce serum vitamin B-12 concentrations by inhibiting the absorption of the vitamin.
Miller JW.
europepmc   +2 more sources

How common is vitamin B-12 deficiency? [PDF]

The American Journal of Clinical Nutrition, 2009
In considering the vitamin B-12 fortification of flour, it is important to know who is at risk of vitamin B-12 deficiency and whether those individuals would benefit from flour fortification. This article reviews current knowledge of the prevalence and causes of vitamin B-12 deficiency and considers whether fortification would improve the status of ...
L. Allen
openaire   +4 more sources

Prevalence of vitamin B 12 deficiency and associated factors among primary school children: North East Ethiopia: multicenter cross-sectional study. [PDF]

J Health Popul Nutr
Background The prevalence of Vitamin B12 deficiency is common and is more frequent in low- and middle-income countries with a poor or inadequate diet of animal foods. In Ethiopia, researches related to the status of micronutrients in children are limited.
Melaku EE, Urgie BM, Tilahun AT, Assefa HK, Abebe AA, Tefera AS.   +5 more
europepmc   +2 more sources

Vitamin B-12 deficiency in the elderly: current dilemmas [PDF]

The 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. Clinical signs and symptoms of vitamin B-12 deficiency are insensitive in elderly subjects and comorbidity in
Sally P. Stabler, J Lindenbaum, Robert H. Allen   +2 more
openaire   +4 more sources

A study of clinical profile of vitamin B 12 deficiency with special reference to dermatologic manifestations in a Tertiary Care Hospital in sub-Himalayan Bengal

Indian Journal of Dermatology, 2015
Background: Vitamin B 12 deficiency is thought to be uncommon in the eastern parts of India including Bengal and the eastern states as compared to the northern and southern parts of India.
Kaushik Sen, Pradyot Sinhamahapatra, Joseph Lalhmachhuana, Subhabrata Ray   +3 more
doaj   +2 more sources

Optic neuropathy as a presenting feature of vitamin B-12 deficiency: A systematic review of literature and a case report. [PDF]

Ann Med Surg (Lond), 2020
Ata F, Bint I Bilal A, Javed S, Shabir Chaudhry H, Sharma R, Fatima Malik R, Choudry H, Bhaskaran Kartha A.   +7 more
europepmc   +2 more sources

Diagnosing vitamin B-12 deficiency on the basis of serum B-12 assay [PDF]

BMJ, 2006
Serum vitamin B-12 concentrations are measured to assess the presence of its deficiency in patients presenting with haematolological, neurological, and neuropsychiatric abnormalities. Replacement therapy is instituted promptly, particularly to prevent irreversible neurological and cognitive dysfunction.
V. Devalia
openaire   +4 more sources

[Prevalence of vitamin B-12 deficiency in older adults]. [PDF]

Revista medica de Chile, 2010
1
Sanchez, Hugo, Albala, Cecilia, Hertrampf, Eva, Verdugo, Renato, Lavados, Manuel, Luis Castillo, Jose, Lera, Lydia, Uauy, Ricardo   +7 more
openaire   +7 more sources

The Human Serum Metabolome of Vitamin B-12 Deficiency and Repletion, and Associations with Neurological Function in Elderly Adults. [PDF]

J Nutr, 2017
Brito A, Grapov D, Fahrmann J, Harvey D, Green R, Miller JW, Fedosov SN, Shahab-Ferdows S, Hampel D, Pedersen TL, Fiehn O, Newman JW, Uauy R, Allen LH.   +13 more
europepmc   +2 more sources