Article Publish Status: FREE
Abstract Title:

Prevalence of vitamin Bdeficiency among metformin-treated type 2 diabetic patients in a tertiary institution, South-South Nigeria.

Abstract Source:

SAGE Open Med. 2019 ;7:2050312119853433. Epub 2019 May 23. PMID: 31205703

Abstract Author(s):

Sampson Omagbemi Owhin, Tomisin Mathew Adaja, Olumuyiwa John Fasipe, Peter Ehizokhale Akhideno, Olufunto Olufela Kalejaiye, Michael Olufemi Kehinde

Article Affiliation:

Sampson Omagbemi Owhin


Background: The risk of chronic metformin pharmacotherapy to cause vitamin Bdeficiency and its associated medical complications has been of immense concern among diabetic patients. Some studies have postulated that vitamin Bdeficiency is highly prevalent among chronic metformin-treated adult diabetic patients.

Aim: This study aimed to determine the prevalence of vitamin Bdeficiency among metformin-treated and metformin-naïve type 2 diabetes mellitus patients.

Materials and methods: This was a case-control, prospective, analytical, observational study of 200 adult participants (100 per group) attending the Endocrinology, Medical Out-patients Clinic of Irrua Specialist Teaching Hospital, Irrua, Edo State, Nigeria. The participants' serum vitamin Blevels were determined using an immunoassay technique. Data were presented using tables and charts. Chi-square test was used to compare non-continuous proportional variables.

Results: The prevalence of vitamin Bdeficiency was 41% and 20% among metformin-treated and metformin-naïve type 2 diabetes mellitus groups, respectively (p = 0.001). Borderline vitamin Bstatus was present among 59% of metformin-treated group and 80% of metformin-naïve group (p = 0.001). Neither metformin-treated nor metformin-naïve groups had normal serum vitamin Blevels.

Conclusion: The prevalence of vitamin Bdeficiency was significantly high in diabetics, especially the metformin-treated patients. We advocate for vitamin Bsupplementation among this group of patients in order to prevent the occurrence of vitamin Bdeficiency complications such as macro-ovalocytic anemia, impaired immunity with hypersegmented neutrophils, peripheral neuropathy and subacute degeneration of the spinal cord.

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