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Certain populations face higher deficiency risk: vegetarians and vegans (B12 is primarily found in animal products), adults over 50 (decreased stomach acid reduces B12 absorption), individuals with digestive disorders like Crohn's disease or celiac disease, and those taking medications like metformin or proton pump inhibitors

It supports the regeneration of nerve cells, aids in the production of DNA, and contributes to the formation of red blood cells

This way, you can make sure youre getting the most health benefits from B12 shots

The response time to B12 injections can vary based on the individuals level of deficiency and overall health