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Surgery Stomach surgery such as a gastrectomy which involves removing part of your stomach may increase your risk of developing vitamin B12 deficiency due to reduced absorption Crohn's disease This disease can lead to inflammation of the digestive tract and may reduce how much vitamin B12 your body absorbs What are the symptoms of vitamin B12 deficiency

Allow the serum to absorb for one to two minutes before proceeding to the next step

For researchers conducting long-term studies or those with needle aversion, these practical considerations may outweigh the bioavailability difference

Many clients feel a noticeable boost in energy within a few hours