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Importance of a Healthy Immune System A strong immune system is the bodys defence against illness and infection
If there is no deficit or the symptoms are mild, weekly dosage may not be necessary
This is particularly important because carrying extra weight or having obesity is a risk factor for type 2 diabetes
However, more RCTs of vitamin B 12 supplementation and analysis of various markers (eg, total B 12 , holotranscobalamin, total Hcy and MMA, total folic acid, and if possible, polymorphism and/or methylation of genes) are needed to precisely identify the status of this micronutrient (before and after) in people with or without COVID-19 and thus facilitate the proper choice of vitamin B 12 form to be administered in treatment
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