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  2. How to recognize the signs and symptoms of vitamin B12 ... - AOL

    www.aol.com/news/recognize-signs-symptoms...

    But, despite the vitamin's importance, between 1.5% and 15% of the general US population is deficient in B12. A B12 deficiency can cause symptoms like fatigue and constipation and could even lead ...

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

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

    “A B12 deficiency can cause physical and neurological symptoms, and research is also growing to support that it can also cause psychological issues as well,” says Shapiro. ... Fatigue. Muscle ...

  4. Is It Possible to Take Too Much B12? Here's What ... - AOL

    www.aol.com/lifestyle/possible-too-much-b12-here...

    Registered dietitians explain what vitamin B12 is, how much you need, and the potential side effects of taking too much. Skip to main content. 24/7 Help. For premium support please call: 800 ...

  5. Vitamin B12 deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12_deficiency

    Vitamin B12 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] Mild deficiency may have few or absent symptoms. [1]

  6. Vitamin B12 - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12

    Key:RMRCNWBMXRMIRW-WYVZQNDMSA-L Y. Vitamin B12, also known as cobalamin, is a water-soluble vitamin involved in metabolism. [2] It is one of eight B vitamins. It is required by animals, which use it as a cofactor in DNA synthesis, and in both fatty acid and amino acid metabolism. [3]

  7. Anemia - Wikipedia

    en.wikipedia.org/wiki/Anemia

    Anemia or anaemia (British English) is a blood disorder in which the blood has a reduced ability to carry oxygen. This can be due to a lower than normal number of red blood cells, a reduction in the amount of hemoglobin available for oxygen transport, or abnormalities in hemoglobin that impair its function. [3][4]