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Difficulty with Memory or Concentration Vitamin B12 deficiency may affect brain function and contribute to difficulty with memory, focus, or concentration
Deficiencies of B12 can manifest themselves as various symptoms
It is found naturally in animal-based foods and has a complex absorption pathway involving intrinsic factor and the terminal ileum
Are There Other Benefits To Taking Vitamin B12 Supplements
Vaughan, M., Berger, J
The article ends with a sentence like during B12 treatment, there is no need to check the B12 concentration in the blood, as this is supposed to be high. And 130 pmol/l is NOT high
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