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Vitamin B12 helps to keep the nervous system healthy. It is needed to make new cells in the body. A lack of it can be a cause of anaemia (pernicious anaemia) which leads to a reduced about of oxygen being carried around the body in the blood.
Common symptoms of a vitamin B12 deficiency include:
Less common symptoms include:
If it is left untreated you can end up with longer term problems including:
B12 is absorbed in the end of the small intestine and people with Crohn’s disease in this area may not be able to absorb B12 very well.
People who have had surgery to remove the stomach or the end of the small intestine may also not be able to absorb vitamin B12.
B12 injections are often given to people with a deficiency. These help to quickly build up stores of the vitamin. Once the stores have been replaced then only maintenance injections will be required, depending on the reasons for the deficiency.
Vitamin B12 can be found naturally in certain foods, including:
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