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  2. Serum vitamin B12 - Wikipedia

    en.wikipedia.org/wiki/Serum_vitamin_B12

    Normal total body vitamin B 12 is between 2 and 5 mg with 50% of that stored in the liver. [3] Total serum vitamin B 12 may not be a reliable biomarker for reflecting what the body stores inside cells. [1] Vitamin B 12 levels can be falsely high or low and data for sensitivity and specificity vary widely.

  3. The Top Signs You Have a Vitamin B12 Deficiency - AOL

    www.aol.com/top-sign-vitamin-b12-deficiency...

    A vitamin B12 level of less than 200 pg/mL is considered deficient. ... Vitamin B-12 1,000 mcg with Folic Acid ... “I typically recommend a liquid or sublingual vitamin B12 supplement with at ...

  4. Vitamin B12 deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12_deficiency

    Vitamin B 12 deficiency, also known as cobalamin deficiency, is the medical condition in which the blood and tissue have a lower than normal level of vitamin B 12. [5] Symptoms can vary from none to severe. [ 1 ]

  5. Vitamin B12 - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12

    For women and men over age 18, ... even in some cases with normal blood B 12 levels. ... Vitamin B 12 levels affect the histone modification H3K36me3, ...

  6. The Best Supplements for Men Over 50, According to ... - AOL

    www.aol.com/best-supplements-men-over-50...

    We researched nutrient needs specific to men over 50 and reviewed ingredients, doses, testing, and customer reviews to come up with our top 6 supplements for men over 50. ... Nature's Bounty B-12 ...

  7. Pernicious anemia - Wikipedia

    en.wikipedia.org/wiki/Pernicious_anemia

    Shown is 500 mcg B-12 (as 1/2 cc) drawn up in a 0.5-cc U-100 27 gauge x 1/2" insulin syringe, as prepared for subcutaneous injection. Pernicious anemia is usually easily treated by providing the necessary level of vitamin B 12 supplementation. [63] Pernicious anemia can be treated with intramuscular injections of vitamin B 12. [64]

  8. 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 ...

  9. Vitamin deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_deficiency

    The normal range is 30 to 65 μg/dL, but plasma concentrations within the range are not a good indicator of a pending deficiency because the normal range is sustained until liver storage is depleted. After that happens, plasma retinol concentration falls to lower than 20 μg/dL, signifying a state of vitamin A inadequacy.

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