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In normal physiology it participates in hepatic fat processing and methylation reactions, and it contributes to the livers handling of triglycerides and cholesterol

The extremely high level of vitamin B12 or cobalamin in your bloodstream can be a serious indication and even a sign of some life-threatening disease

By Alaiyka Parvez Owner, CoLaz Aesthetics Clinic The short version B12 injections are the standard NHS treatment for proven B12 deficiency, most commonly caused by autoimmune gastritis (pernicious anaemia), some medications, gut surgery, or a long-term vegan diet without fortification

Those with a faster metabolism or severe deficiency might notice the benefits waning more quickly, typically within one to two weeks, especially regarding the energy-boosting effects