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  2. Methylcobalamin - Wikipedia

    en.wikipedia.org/wiki/Methylcobalamin

    Nickel–methyl intermediates have been proposed for the final step of methanogenesis. Methylcobalamin is equivalent physiologically to vitamin B 12, [3] [non-primary source needed] and can be used to prevent or treat pathology arising from a lack of vitamin B 12 intake (vitamin B 12 deficiency). [medical citation needed] [dubious – discuss]

  3. Vitamin B12 deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12_deficiency

    Vitamin B 12 deficiency can be determined, but not always. [14] This means it measures forms of vitamin B 12 that are "active" and can be used by the body, as well as the "inactive" forms, which cannot. [150] Vitamin B 12 deficiency can be found within normal levels, so clinical symptoms should be taken into account when a diagnosis is made. [2]

  4. Methylmalonic acid - Wikipedia

    en.wikipedia.org/wiki/Methylmalonic_acid

    Methylmalonic acid is elevated in 90–98% of patients with vitamin B 12 deficiency. It has lower specificity since 20–25% of patients over the age of 70 have elevated levels of methylmalonic acid, but 25–33% of them do not have B 12 deficiency. For this reason, the testing of methylmalonic acid levels is not routinely recommended in the ...

  5. Pernicious anemia - Wikipedia

    en.wikipedia.org/wiki/Pernicious_anemia

    The Schilling test distinguished PA from other forms of B 12 deficiency, [50] specifically, from Imerslund–Gräsbeck syndrome, a B 12-deficiency caused by mutations in CUBN that codes for cubilin the cobalamin receptor. [1] Vitamin B12 deficiency is also prevalent in patients having Crohn's disease (CD) so it should be differentiated. [62]

  6. Megaloblastic anemia - Wikipedia

    en.wikipedia.org/wiki/Megaloblastic_anemia

    This leads to continuing cell growth without division, which presents as macrocytosis. Megaloblastic anemia has a rather slow onset, especially when compared to that of other anemias. The defect in red cell DNA synthesis is most often due to hypovitaminosis, specifically vitamin B12 deficiency or folate deficiency. Loss of micronutrients may ...

  7. Vitamin B12 deficiency symptoms - AOL

    www.aol.com/finance/vitamin-deficiency-cause...

    Vitamin B12 deficiency symptoms . Vitamin B12 deficiency has a few hallmark symptoms, according to doctors: Lack of energy. Mental fatigue. Nausea, vomiting, or diarrhea. Lack of appetite. Weight loss

  8. These High-Quality Vitamin B12 Supplements Can Help ... - AOL

    www.aol.com/high-quality-vitamin-b12-supplements...

    MyKind Organics Vegan B12 Spray. Made with methylcobalamin and oodles of organic fruit and botanicals, one spray a day tastes like raspberries while delivering 500 micrograms of vitamin B12. Plus ...

  9. 12 Best Vitamins for Hair Growth - AOL

    www.aol.com/12-best-vitamins-hair-growth...

    2. Vitamin B12. One of eight B-complex vitamins, vitamin B12 is found naturally in some types of fish, red meat and fortified foods.It plays a key role in central nervous system function, DNA ...