Vitamin B12
Vitamin B12 performs several important functions in the body, including keeping the nervous system healthy.
Why it matters: A lack of vitamin B12 causes the body to produce abnormally large red blood cells that do not work properly. This can bring fatigue, pins and needles, a sore tongue, mouth ulcers, muscle weakness and vision problems.
Source · NHS — what it is, why it matters
Source · NHS — what moves it
May decrease with:
What is Vitamin B12?
Vitamin B12 performs several important functions in the body, including keeping the nervous system healthy.
What might a high or low Vitamin B12 mean?
A lack of vitamin B12 causes the body to produce abnormally large red blood cells that do not work properly. This can bring fatigue, pins and needles, a sore tongue, mouth ulcers, muscle weakness and vision problems.
What is the typical reference range for Vitamin B12?
The general-population reference range shown here is 148 – 616 pmol/L. Reference ranges describe the general population and are not a personal target — discuss your results with your physician.
What can affect Vitamin B12?
It may be lower with: Pernicious anaemia, an autoimmune condition affecting the stomach, A diet without meat, fish or dairy and without fortified foods or supplements, Stomach or intestinal conditions such as gastrectomy or Crohn's disease, Some medicines.
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