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6% (< 60 years old), 20% (> 60 years old) [ 4 ] 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] [14] [25] Vitamin B 12 deficiency can also cause symptoms of mania and psychosis. [26] [27] Among other problems, weakened immunity, reduced fertility and interruption of blood circulation in women may occur. [28] The main type of vitamin B12 deficiency anemia is pernicious anemia, [29] characterized by a triad of symptoms:
Look for these warning signs of vitamin B12 deficiency. You could be experiencing both mental and physical symptoms. ... Increased heart rate. ... with pregnant and nursing women needing slightly ...
Frequency. 1 per 1000 people [8] Pernicious anemia is a disease where not enough red blood cells are produced due to a deficiency of vitamin B 12. [5] Those affected often have a gradual onset. [5] The most common initial symptoms are feeling tired and weak. [4]
The National Institutes of Health recommends that the average man consume a mere 2.4 micrograms a day, which is actually the lowest daily recommended dose of any vitamin. “Vitamin B12 ...
Megaloblastic anemia, the most common cause of macrocytic anemia, is due to a deficiency of either vitamin B 12, folic acid, or both. [77] Deficiency in folate or vitamin B 12 can be due either to inadequate intake or insufficient absorption. Folate deficiency normally does not produce neurological symptoms, while B 12 deficiency does.