Even if a person is not deficient in Vitamin B12, as defined by a blood test, the symptoms of a B12 deficiency may include: Feeling weak or tired Problems with vision Headaches Pins and needles Reduced mental functions Wish to check you vitamin B12 levels
doi: 10.5435/JAAOSGlobal-D-25- 6: Mayfield CK, Bolia IK, Feingold CL, Lin EH, Liu JN, Rick Hatch GF, Gamradt SC, Weber AE
These findings were not attributed to variations in food intake, which implies that the observed results were mediated by alterations in metabolic processes [1]
population does not get enough B12 in their diet
Individual differences: The duration of B12 injection benefits can also vary based on individual factors, such as age, genetics, and overall health status
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