The most notable finding was that the weight loss was specifically fat loss, particularly in the abdominal area
PMC 4962419
B12 deficiency is more common than widely recognized, particularly in individuals who follow plant-based diets, take proton pump inhibitors or metformin, are over 50, or have gastrointestinal conditions affecting absorption
Frequency depends on your baseline, goals, and response
Energy production, fat synthesis, liver health, red blood cell production, sleep, and appetite regulation B12 supports all six systems that determine whether your weight loss program works
B12 shots can go into muscles, under the skin, or through veins