The cardiovascular outcome trials (LEADER, SUSTAIN-6, REWIND) reported pancreatic cancer rates consistent with background incidence in diabetic populations
Each individual will experience a different sensation during a B12 injection
The correlates of neonatal complement component 3 and 4 protein concentrations with a focus on psychiatric and autoimmune disorders
(PMID: 16186419) Wang, Zhang, Huang, and colleagues published a dose-response meta-analysis in PLoS ONE in 2017, analyzing nine prospective studies with 527,589 participants
However, pregnant or nursing women, individuals with a medical condition, or those taking prescription medications should consult a healthcare provider before use
Skin reactions or injection site effects may occur with B12 supplementation but are not caused by elevated serum levels