can b12 injections cause side effects Vitamin Effects: Risks of Excess Intake Benefits of Vitamin B12 Shots

BOMSS advises specialist multidisciplinary follow-up for at least two years post-surgery, with lifelong monitoring thereafter in primary care

In 2025, scientists at University of California, San Francisco, reported that even older adults with B12 levels considered "normal" showed subtle signs of neurological decline

As a result, methylfolate is converted to tetrahydrofolate, which is required for purine synthesis which in turn is required for DNA synthesis

Reported dose-dependent limitation of weight and fat-mass gain, improved glucose tolerance and insulin sensitivity, reduced hyperinsulinemia, and improvements in steatosis and liver markers