• Anil Yadav, Sabita Jyoti, Ram Kumar Mehta, and Surya Bahadur Parajuli.
• Department of Medicine, Birat Medical College Teaching Hospital, Biratnagar, Morang, Nepal.
• JNMA J Nepal Med Assoc. 2023 Nov 1; 61 (267): 861863861-863.

IntroductionAbout 424.9 million people worldwide are affected by Diabetes mellitus. Prevalence among people 20-79 years old in Nepal was 4% in 2017. It is associated with microvascular and macrovascular complications such as peripheral neuropathy leading to risk of foot ulcers and amputation, and impaired sensation in their feet. The study aimed to find the prevalence of vitamin B12 deficiency among metformin-treated type 2 diabetic patients visiting the Department of Medicine of a tertiary care centre.MethodsA descriptive cross-sectional study was conducted in a tertiary care centre between 24 May 2021 to 24 May 2022 after obtaining ethical approval from the Institutional Review Committee. Patients who visited the Department of Medicine and gave informed consent were included in the study. Patients with underlying comorbidities were excluded from the study. A convenience sampling method was used. The point estimate was calculated at a 95% Confidence Interval.ResultsAmong 330 patients, vitamin B12 deficiency was seen in 33 (10%) (6.76-13.24, 95% Confidence Interval). Among them, 27 (81.82%) were male and 6 (18.18%) were female.ConclusionsThe prevalence of vitamin B12 deficiency was found to be higher than other studies done in similar settings.Keywordsdiabetic neuropathy; metformin; type 2 diabetes; vitamin B12.

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