African Journal of
Biochemistry Research

  • Abbreviation: Afr. J. Biochem. Res.
  • Language: English
  • ISSN: 1996-0778
  • DOI: 10.5897/AJBR
  • Start Year: 2007
  • Published Articles: 408

Full Length Research Paper

Deficiency of vitamin B12 among Jordanian people with psychological and biological activity

Mohammad A. Al-Fararjeh1, Nader Jaradat2 and Abdulrahim Aljamal2*
1Department of the Medical Laboratory Technology, Hashemite University. Zarqa, Jordan. 2Department of Medical Technology, Faculty of Allied Medical Sciences, Zarqa  University,  P. O. Box 132222-Zarqa 13110- Jordan.
Email: [email protected]

  •  Accepted: 08 August 2011
  •  Published: 30 September 2011


This study was conducted to evaluate vitamin B12 level among Jordanians healthy people and its effects on psychological parameters. One hundred and eighty six subjects were recruited in the study. The subjects were chosen to be healthy, aged between 16 to 71 years. Participants were asked to fill a detailed questionnaire that covered medical data then they were divided into three age groups. Serum vitamin B12 levels were done for all volunteers. Results showed the mean values of B12 concentrations in males and females. There were lower mean B12 concentration in females (264.02 pmol/L) than males (281.56 pmol/L) and a total mean concentration was 265.79 pmol/L that is near the cutoff value which was 258 pmol/liter. The mean value of the B12 distributed in different age ranges for the mean concentration of the 16 to 25 years group was 249.03 pmol/L significantly lower than the other group. There were highly significant difference between the groups in terms of low sexual activity, Memory loss, Loss of appetite and depression and deficiency of vitamin B12.
Key words: Vitamin B12, B12 deficiency and psychological parameters.