For people with malabsorption issues , the difference is dramatic
Without adequate levels of vitamin B-12 in your diet, your immune system can become weakened and unable to fight off infections or illness
This delivery method bypasses the gastrointestinal system altogether, so persons in risk groups for vitamin B12 deficiency with gastrointestinal issues may turn to the shot option for a quick means of ensuring their body has sufficient stores of vitamin B12 to effectively function
Gastrointestinal issues: If youve been diagnosed with gastrointestinal disorders such as celiac disease or Crohns disease, or youve undergone gastrointestinal surgery, you may require B12 injections
This process consumes cellular methyl donors and, critically, prevents nicotinamide from being recycled into NAD+
The specific reasons identified include intensive insulin therapy, decreased renal function, severe liver disease, alcohol ingestion, defective counter regulatory hormone release, missing meals/fasting, and gastroparesis