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Gastrointestinal conditions Some gastrointestinal conditions may affect how vitamin B12 is digested or absorbed, such as: history of gastrointestinal surgery celiac disease Crohns disease pernicious anemia infections, such as from Helicobacter pylori bacteria or parasites pancreatic insufficiency or cancer bowel cancer folic acid deficiency small intestinal bacterial overgrowth Vitamin B12 injections may be more helpful for people with gastrointestinal conditions than oral products

Extends telomere length in human cell lines

More research is needed to conclude if supplementing with this vitamin can improve memory in those without a deficiency

B12 injections often comes up at this point, as it plays a direct role in energy, brain health, sleep quality, and overall wellness

This article is part of the PlexusDx Education Hub science-backed guidance on GLP-1 medications, metabolic health, and precision weight management