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Vitamin B12 functions as a cofactor for two essential enzymes: methionine synthase (involved in homocysteine metabolism and DNA synthesis) and methylmalonyl-CoA mutase (crucial for fatty acid and amino acid metabolism)
What that looks like in practice: some people notice shifts in energy and how their body composition responds before the scale moves much, since the goal is metabolic, not just water weight
To achieve a lasting effect, application is carried out by a doctor or natural practitioner, usually in the form of a course of injections over several weeks
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