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Vitamin B12 supports the nervous system by maintaining myelin, which is the protective coating around nerves

Ozempic (and its cousins Wegovy, Mounjaro, etc.) work primarily by acting on the brains appetite centers and digestive tract: they make you feel full sooner, slow gastric emptying, and improve insulin sensitivity, which together lead to eating less and storing less fat

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

What if your body cannot produce enough of this vitamin

While the liver has substantial storage capacity, supraphysiological doses (such as from injections) are largely excreted in the urine