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Blood tests may show low levels of vitamin B 12, elevated levels of methylmalonic acid or homocysteine, and a routine complete blood counts may shows anemia with an elevated mean cell volume. [141] The presence of antibodies to gastric parietal cells and intrinsic factor may indicate pernicious anemia .
Blood tests may show fewer but larger red blood cells, low numbers of young red blood cells, low levels of vitamin B 12, and antibodies to intrinsic factor. [6] Diagnosis is not always straightforward and can be challenging. [10] Because pernicious anemia is due to a lack of intrinsic factor, it is not preventable. [11]
Lack of vitamin B12 can cause megaloblastic anemia—a condition characterized by larger than normal red blood cells in a smaller than normal amount. This causes fatigue, paleness in the skin ...
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]
Pernicious anaemia is a lifelong condition that affects nearly 5 in 100,000 people in the UK.
Vitamin b12 deficiency can cause mood swings and tiredness. And no, you don't need to be a vegan to deal with this problem.
Vitamin B 12 deficiency is a widespread condition that is particularly prevalent in populations with low or no consumption of animal foods. [9] Such diets can be due to a variety of reasons, such as low socioeconomic status or personal choice (i.e., veganism, vegetarianism).
Causes of vitamin B12 deficiency. ... Once you get an evaluation, a doctor will usually order a blood test to check for a vitamin B12 deficiency, along with other potential factors that could ...