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Adults only need 2.4 micrograms a day of B12, and most of us get that through foods like fish, beef, milk, eggs, and fortified breakfast cereals
Benefits Of B12 Injections Increased Red Blood Cells B12 injections play a crucial role in supporting the production of healthy red blood cells, helping the body maintain effective oxygen transport and prevent issues related to low hemoglobin or deficiency
Why long-term metformin can lower your B12 Metformin changes how your small intestine absorbs B12 from food
For a person who cannot absorb B12, the injection is a critical, life-sustaining treatment, not a voluntary supplement
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