Research indicates that H pylori infection can cause vitamin B12 deficiency. This may be one of the reasons why patients feel tired, depressed and anxious as a result of having chronic H pylori infection. Unfortunately, the majority of health care professionals in the medical system do not look at chronic digestive infections and gut dysfunction as a cause of such symptoms, but the cause-effect relationship is undeniable when you look at how your body works! In some people, H pylori is known to cause an autoimmune reaction against the parietal cells of the stomach. The parietal cells secrete acid...