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In these cases, the liver may not be able to properly metabolize vitamin B12, leading to a build-up of the vitamin in the body
While B12 is found naturally in a healthy diet, factors like stress or poor eating habits can lead to a deficiency
[8] The MHRA Drug Safety Update highlights that metformin interferes with calcium-dependent B12 absorption in the terminal ileum, and long-term use is associated with reduced serum B12 levels in a significant proportion of patients
Whether you have a deficiency or you simply want to make certain that you're eating a well-rounded diet, there are many foods that contain vitamin B12
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