Vegan For Life
by Jack Norris, RD &
Ginny Messina, MPH, RD
Conditions That Increase B12 Levels
Some diseases can cause serum B12 levels to increase higher than normal in some people. These include kidney, liver, cancer, and duodenal ulcers (1), diabetes, obesity (2), and cyanide metabolism defects (3). B12 deficiency can be hidden by alcoholism because excess B12 is released into the blood from the damaged liver (4).