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Yellow stools may also indicate gastrointestinal problems, a possible side effect of taking too much vitamin B
If you have a B-12 deficiency, it can be more challenging to lose weight, and you might feel sluggish or tired, so B-12 injections can help boost your energy and metabolism.
Carlson ED, Gan R, Hodgman CE, Jewett MC
Pernicious anemia is an autoimmune disorder that results in the inability to absorb vitamin B12
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