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  2. 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 ]

  3. Pernicious anemia - Wikipedia

    en.wikipedia.org/wiki/Pernicious_anemia

    Pernicious anemia is the most common cause of clinically evident vitamin B 12 deficiency worldwide. [14] Pernicious anemia due to autoimmune problems occurs in about one per 1000 people in the US. Among those over the age of 60, about 2% have the condition. [ 8 ]

  4. Vitamin B12 - Wikipedia

    en.wikipedia.org/wiki/Vitamin_B12

    A second major cause is an age-related decline in stomach acid production (achlorhydria), because acid exposure frees protein-bound vitamin. [12] For the same reason, people on long-term antacid therapy, using proton-pump inhibitors , H 2 blockers or other antacids are at increased risk.

  5. Aphthous stomatitis - Wikipedia

    en.wikipedia.org/wiki/Aphthous_stomatitis

    Although these studies found that 0–42% of those with recurrent ulcers have a vitamin B12 deficiency, an association with deficiency is rare. Even in the absence of deficiency, vitamin B12 supplementation may be helpful due to unclear mechanisms. [18] Hematinic deficiencies can cause anemia, which is also associated with aphthous-like ...

  6. Cyanocobalamin - Wikipedia

    en.wikipedia.org/wiki/Cyanocobalamin

    Cyanocobalamin is a form of vitamin B. 12 used to treat and prevent vitamin B. 12 deficiency except in the presence of cyanide toxicity. [7][8][2] The deficiency may occur in pernicious anemia, following surgical removal of the stomach, with fish tapeworm, or due to bowel cancer.

  7. Vitamin deficiency - Wikipedia

    en.wikipedia.org/wiki/Vitamin_deficiency

    Endocrinology. Vitamin deficiency is the condition of a long-term lack of a vitamin. When caused by not enough vitamin intake it is classified as a primary deficiency, whereas when due to an underlying disorder such as malabsorption it is called a secondary deficiency. An underlying disorder can have 2 main causes:

  8. Hydroxocobalamin - Wikipedia

    en.wikipedia.org/wiki/Hydroxocobalamin

    They may include diarrhea, feeling sick, hot flushes, itchiness, low blood potassium, allergic reactions, and high blood pressure. [2] Normal doses are considered safe in pregnancy. [5] No overdosage or toxicity has been reported with this drug. [2] Hydroxocobalamin is the natural form of vitamin B 12 and a member of the cobalamin family of ...

  9. Irritable bowel syndrome - Wikipedia

    en.wikipedia.org/wiki/Irritable_bowel_syndrome

    Irritable bowel syndrome (IBS) is a functional gastrointestinal disorder characterized by a group of symptoms that commonly include abdominal pain, abdominal bloating and changes in the consistency of bowel movements. [1] These symptoms may occur over a long time, sometimes for years. [2] IBS can negatively affect quality of life and may result ...