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Why do people become low in B12
Warning: External use only
Volume is 0.2-0.3 mL with insulin syringe (29-31 gauge)
Vitamin B12 deficiency is one of the most common nutrient deficiencies in the world, especially for vegetarians, vegans and people with health conditions such as Crohns Disease or Celiac Disease which makes it hard to absorb nutrients
Anesthesiology 105:599612
Older persons with digestive problems that impair their dietary nutrient absorption may avoid zinc deficiency by taking supplemental zinc
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