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A reader is best served by holding two things at once: the mechanism is genuinely interesting, and the human evidence does not yet exist
Severe B12 deficiency is widely reported and leads to pernicious anemia since your body needs B12 to make red blood cells, and a deficiency limits its capabilities to build them
guidance from healthcare professionals improves safety and ensures injections target appropriate muscle or subcutaneous tissue
That can mean fewer doses to reach the same effect
Catching and correcting a confirmed deficiency early is generally simpler and less costly than treating the complications that a long-standing deficiency can cause
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