can b12 injections make you gain weight Does MIC Help with Loss? Understanding the Benefits Vitamin B12 Deficiency - Medcare

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Deficiency causes megaloblastic anemia and subacute combined degeneration of the spinal cord

Appetite Effects The question about appetite is interesting because the proposed mechanism could reasonably go either direction: Reduced lipogenesis and improved metabolic flexibility could produce secondary effects on appetite regulation NAD+ restoration has complex effects on hypothalamic appetite signaling Preclinical data do not consistently describe dramatic appetite changes In human use were it to become clinically available patient-reported appetite effects would be a relevant monitoring parameter, but the data do not currently support a strong a priori expectation

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Read the full study: The effects of human GH and its lipolytic fragment (AOD9604) on lipid metabolism following chronic treatment in obese mice and 3-AR knock-out mice (Endocrinology 2001)