When I was diagnosed with pernicious anemia, I noticed that my stomach would distend after almost every meal and I would remain full longer than usual. The issue subsided once I started on the injections, but when I was put on the vitamin to maintain, I noticed the old issue of stomach distention reappeared and I gained weight instead of losing. Is there a correlation. Did the lack of an intrinsic factor destroy some enzyme needed for proper digestion of food. I have no idea, and would appreciate any clues, ect..