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Vitamin B 12 deficiency can be extremely serious and lead to megaloblastic anemia, nerve degeneration and irreversible neurological damage. [7] Vegetarians may get vitamin B 12 from eggs and dairy products (milk, cheese, etc.); [8] for some, this is adequate, while others may still remain B 12-deficient. [1]
Pernicious anemia, or Addison's anemia, is an autoimmune disease which decreases red blood cell count, caused by the body's inability to properly absorb vitamin B12. It can cause diarrhea, pale ...
Pernicious anemia is the most common cause of vitamin B 12 deficiency anemia in adults, which results from malabsorption of vitamin B 12 due to a lack or loss of intrinsic factor. [2] [8] There are relatively few studies which have assessed the impact of haematological measures in response to B 12 supplementation.
Nutritional anemia can be caused by a lack of iron, protein, vitamin B12, and other vitamins and minerals that are needed for the formation of hemoglobin. However, Iron deficiency anemia is the most common nutritional disorder. [7] Signs of anemia include cyanosis, jaundice, and easy bruising. [7]
Vitamin B 12 deficiency is potentially extremely serious, leading to megaloblastic anemia (an undersupply of oxygen due to malformed red blood cells), [71] nerve degeneration and irreversible neurological damage. [72] Cases of severe vitamin B 12 deficiency have been reported in vegan adults, children [73] infants and toddlers. [74]
Long-term use of zinc in high doses, for example, can cause a copper deficiency; high doses of vitamin A shouldn’t be taken during pregnancy because it can hurt the fetus; and excessive vitamin ...
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:
Vitamin D is not found naturally in many foods, but is needed by the body to help it absorb calcium effectively. Research has also linked omega-3 fatty acids to improved bone quality.
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