Vitamin B12 Deficiency among Cases of Helicobacter Pylori Gastritis: A Cross Sectional Study

Abstract

Background: Helicobacter pylori (H. pylori) is a gram-negative bacterium associated with various gastrointestinal diseases, including peptic ulcer disease, gastric cancer, and vitamin B12 deficiency. Recent research has highlighted a potential link between chronic H. pylori infection and significant malabsorption of vitamin B12, particularly in populations with high prevalence rates of infection. Objective: This study aims to investigate the frequency of vitamin B12 deficiency among patients with H. pylori gastritis and to explore the association between H. pylori infection and vitamin B12 levels. Methods: A cross-sectional study was conducted from September 2023 to March 2024 at the Department of Medicine, Ayub Teaching Hospital, Abbottabad. A total of 120 patients presenting with symptoms of gastritis were enrolled after obtaining ethical approval from the hospital’s review board. Exclusion criteria included patients already on vitamin B12 supplementation. Diagnostic testing for H. pylori was performed using stool antigen tests, and vitamin B12 levels were assessed through serum measurements. Data analysis was conducted using IBM SPSS Statistics version 23, with the Chi Square test applied to examine the association between H. pylori infection and vitamin B12 deficiency, setting the level of significance at p ≤ 0.05. Results: Out of the 120 patients studied, 49 (40.8%) tested positive for H. pylori. Vitamin B12 deficiency was observed in 35 (29.2%) patients. Among those infected with H. pylori, 51.0% (25 patients) also had vitamin B12 deficiency, compared to 14.1% (10 patients) among those not infected (p = 0.0001). Conclusion: The findings indicate a significant association between H. pylori infection and vitamin B12 deficiency. This study suggests that H. pylori is a potential risk factor for vitamin B12 deficiency, underscoring the need for screening and appropriate management of H. pylori in patients presenting with vitamin B12 deficiency.