This is especially important for patients with absorption issues such as those with digestive conditions, low stomach acid (common with aging), or MTHFR gene variants who cannot adequately absorb B12 from food or oral supplements
Emerging research further points to its anti-aging effects through collagen synthesis, as well as analgesic benefits [37, 38]
Medically reviewed by: Jayden Lee, PharmD, EMBA Jayden Lee, PharmD, EMBA, is the PlexusDx Medical Science Liaison with a PharmD and MBA specializing in pharmacogenomics and clinical product development, with a proven ability to bridge the gap between genomic research and practical patient outcomes
It is normal
Thats not what we recommend
Here are some common causes: Dietary deficiency, mainly in vegans and vegetarians Pernicious anemia, an autoimmune issue with intrinsic factor production Gastric disorders, like atrophic gastritis or gastrectomy Malabsorption conditions, including Crohns disease and celiac disease Certain medications, like proton pump inhibitors and metformin Signs and Symptoms Requiring Medical Intervention Its important to know the signs of vitamin B12 deficiency