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These injections are not recommended as a standalone weight loss solution but rather as one component within a comprehensive wellness plan supervised by a medical provider

What about the B12 found in food

A deficiency of vitamin B12 is fairly difficult to diagnose and there are quite a few variables that can lead to the deficiency or just not quite having enough of it regularly, so injections of vitamin B12 can benefit quite a few people who suffer from symptoms including brain fog, fatigue, lethargy, feelings of depression, tingling in their hands or feet, dizziness, and memory loss

It is widely investigated for its interaction with nicotinamide N-methyltransferase (NNMT), an enzyme associated with metabolism and energy balance