Department of Endocrinology, Mymensingh Medical College, Charpara, Mymensingh Sadar, Mymensingh 2200, Bangladesh Tel: +880-1711103905, Fax: +880-9166064, E-mail: [email protected] Received: September 29, 2024 Revised: October 11, 2024 Accepted: November 14, 2024 Copyright 2025 Korean Endocrine Society This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited
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FBCM is currently considered to be the most common cause of vitamin B12 deficiency, caused by impairment in the release of the vitamin from food, commonly because of conditions such as gastritis, achlorhydria, gastrectomy, use of antacids, or proton pump inhibitors (PPIs), gastric atrophy in the elderly, and Helicobacter pylori infection (63, 74)