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Vitamin B 12 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]
Serum vitamin B 12 is a medical laboratory test that measure vitamin B 12 only in the blood binding to both transcobalamins. [1] Most of the time, 80–94% of vitamin B 12 in the blood binds to haptocorrin, while only 6–20% is binds to transcobalamin ll. [2] Only transcobalamin ll is "active" and can be used by the body. [1]
Most meat-eating men consume about 5 micrograms of B12 daily and pee out what they don’t need. ... by larger than normal red blood cells in a smaller than normal amount. This causes fatigue ...
The Good Housekeeping Institute tested more than 30 brands of B12 supplements, and chose Nature made B12 1000mcg as the best overall option, and Garden of Life Vitamin Code Raw B12 as the best ...
Vitamin B 12 was discovered as a result of pernicious anemia, an autoimmune disorder in which the blood has a lower than normal number of red blood cells, due to a deficiency of vitamin B 12. [ 5 ] [ 16 ] The ability to absorb the vitamin declines with age, especially in people over 60.
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
If there are other, reversible causes of low vitamin B 12 levels, the cause must be treated. [106] Vitamin B 12 deficiency anemia is usually easily treated by providing the necessary level of vitamin B 12 supplementation. [107] The injections are quick-acting, and symptoms usually go away within one to two weeks. [107]
The normal range for MCV is 80–100 fL. ... Vitamin B12 and/or folic acid deficiency has also been associated with ... it can be as low as 60 to 70 femtolitres.
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