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Vitamin B 12 deficiency can be determined, but not always. [14] This means it measures forms of vitamin B 12 that are "active" and can be used by the body, as well as the "inactive" forms, which cannot. [150] Vitamin B 12 deficiency can be found within normal levels, so clinical symptoms should be taken into account when a diagnosis is made. [2]
The Schilling test distinguished PA from other forms of B 12 deficiency, [50] specifically, from Imerslund–Gräsbeck syndrome, a B 12-deficiency caused by mutations in CUBN that codes for cubilin the cobalamin receptor. [1] Vitamin B12 deficiency is also prevalent in patients having Crohn's disease (CD) so it should be differentiated. [62]
Other symptoms of vitamin B12 deficiency include memory loss, fatigue and weakness, nerve damage causing numbness and tingling in the arms and legs, dementia, depression, and seizures.
[6] [15] [26] Vitamin B 12 deficiency can also cause symptoms of mania and psychosis. [27] [28] Among other problems, weakened immunity, reduced fertility and interruption of blood circulation in women may occur. [29] The main type of vitamin B12 deficiency anemia is pernicious anemia, [30] characterized by a triad of symptoms:
B12 is crucial for many important functions, and, with a few exceptions, the only way to get it is through animal-based foods or B12 supplements. “Vitamin B12 is an essential water-soluble ...
Vitamin B12 deficiency symptoms . Vitamin B12 deficiency has a few hallmark symptoms, according to doctors: Lack of energy. Mental fatigue. Nausea, vomiting, or diarrhea. Lack of appetite. Weight loss
Vitamin B12 deficiency anemia occurs when a "lower-than-normal" amount of the vitamin B12 is available within the body, leading to a decreased production of healthy red blood cells. [7] Vitamin B12 deficiency anemia due to intrinsic factor deficiency: D51.0: Vitamin B12 deficiency is caused by a lack of intrinsic factor, as seen in pernicious ...
Vitamin B12 deficiency symptoms. In addition to weakness and fatigue, a B12 deficiency may also prompt a slew of other symptoms, depending on the severity, including: pale skin.