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Therefore, its worth asking your doctor to also check your active vitamin B12 levels (also known as holotranscobalamin II) and blood or urine levels of methylmalonic acid (5)

Globally, B12 deficiency affects a significant portion of the population, ranging from 6% in some groups to as high as 20% in older adults

Methylcobalamin : A of vitamin B natural, bioactive form 12 found in food and also available as a supplement

2017;2017:8162421 Franchitto A, Carpino G, Alisi A, et al

Version V 1.1 Minor formatting for accessibility (1/12/2022)
