Which infection causes vitamin B12 deficiency?
                                
                                
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                                    4 min read                                
                            
                                According to a study published in the *Journal of Health and Rehabilitation Research*, Helicobacter pylori (H. pylori) infection was associated with vitamin B12 deficiency in 51% of infected patients. This highlights a key finding: certain bacterial and parasitic infections can cause vitamin B12 deficiency by impairing absorption within the digestive system.