how often should i do b12 injections Can Take Injections? how often do you need

In some cases of hair loss vitamin B12, neuropathy causing damage and degeneration of nerve fibres

Memon NM, et al

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This means doctors need to know about them all

A deficiency can occur for several reasons, such as pernicious anemia (a condition where the body cannot absorb vitamin B12 from the diet), certain medical conditions (e.g., Crohn's disease, celiac disease), surgical removal of part of the stomach or intestine, or strict vegetarian/vegan diets if not adequately supplemented

It also depends on how well the body absorbs it