Your Overall Health Underlying health conditions, such as gastrointestinal disorders (like Crohns disease, celiac disease, or atrophic gastritis) that impair nutrient absorption, or certain medications you may be taking, can influence how your body absorbs and utilizes B12
Now, we need to find out why youre deficient
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psychiatry 27 (6), 26742688
The absence of an identified receptor means that dose-response relationships, structure-activity relationships, and therapeutic optimization are all fundamentally limited