However, low levels Some peoples bodies do not produce enough stomach acid or intrinsic factor if they have a condition known as autoimmune atrophic gastritis
Who it's most relevant for : People who feel like their metabolism has slowed significantly, those who struggle with energy alongside weight challenges, and anyone whose diet or health history suggests possible B12 insufficiency (common in people who eat little red meat, have digestive absorption issues, or take certain medications like metformin)
It's an all-hands-on-deck emergency
If you have additional risk factors, such as a vegetarian or vegan diet (which may be lower in B12-containing foods), a history of gastrointestinal surgery, or certain medical conditions like pernicious anemia, your healthcare provider may recommend monitoring your B12 levels and considering supplementation, including B12 shots if necessary
Clean, properly disinfected needles should be used to reduce the potential for injection site infections