b12 injections help lose weight Does You Weight? Vitamin B12 Injections: What You

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When you lack B12, your red blood cells become malformed, and the oxygen delivery is compromised, making you feel tired

For maximum benefit, it is recommended to have one injection per week for 4 weeks, then maintain with one injection every 3 months

Tsai, B., Ye, Y

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Intrinsic factor is only made in the stomach and after a gastrectomy there is little to no more of it or gastric acid, and the active mechanism in the body where B12 is absorbed is either less available or not available at all depending on if the surgery was a total or a part of a gastrectomy