Diseases Related to High B12 Levels
High B12 levels can be a marker of several diseases. However, keep in mind that it is not a cause of these conditions. Some studies have shown an association between elevated B12 with hepatitis and cirrhosis. A few forms of cancer might lead to high serum B12 as well, especially in the stomach, colon, and breast. Other related conditions include kidney problems and esophagus issues. [5]
