Any problem that causes poor absorption in the stomach or small intestine, such as Crohns disease
A vitamin B12 overdose through supplements and parenteral administration in particular can cause undesirable or even dangerous vitamin B12 side effects
You can get cirrhosis and liver tissue damage from fat and bile accumulating in the liver
General Comments Comment: Many commenters, including, for example, hospitals and hospital associations, information technology developers, researchers, employers, payers, healthcare consumers, and consumer advocates expressed support for the Administration's goals of making more meaningful price information available to patients to support a more competitive, innovative, affordable, and higher quality healthcare system
But some nutrients have a more complicated story, and vitamin B12 is a fascinating example
Our work examines ecological drivers of contamination, population structure in environmental reservoirs, and factors that influence long-term persistence
