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Intramuscular: Into the muscle tissue
Vitamin B 12 deficiency can develop for the following reasons: Absence of intrinsic factor, also called pernicious anemia: Intrinsic factor is a protein secreted by cells of the stomach lining
Injections can correct this by helping your body produce more tryptophan
doi:10.3945/ajcn.2009.27774 Clnin G, Cordes M, Huber A, et al
Individual variations in intrinsic factor production, genetic polymorphisms affecting B12 metabolism, and the complex interactions between various nutrients and medications can influence B12 status
Importantly, these body weight changes were not attributable to differences in food intake across the groups, as all treatments showed similar food consumption patterns in both lean and obese mice
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