PMID 8879994
Health Benefits Researchers are actively studying the impact of B12 on cancer risk, cardiovascular disease, energy, endurance, cognitive function, and dementia
But as time goes by and you get the hang of it, you can start doing it independently
Pregnancy, breastfeeding and cyanocobalamin
Significant main effects of treatment group (prior to BenjaminiHochberg correction since none were significant after correction, although the necessity of correction for multiple comparisons in exploratory analyses remains unresolved 49 ) were observed for the unclassified group and ten classified genera, namely, Acetatifactor , Akkermansia , Erysipelatoclostridium , [ Eubacterium ] coprostanoligenes group , Family XIII UCG-001 , Lactobacillus , Parasutterella , Ruminiclostridium 6 , Ruminococcaceae UCG-004 , and Ruminococcaceae UCG-009