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How can you tell if you are B12 deficient ?

 How can you tell if you are B12 deficient ?

Vitamin B12 belongs to the B group of vitamins . B vitamins are very important to the body , especially vitamin B12 .

The main physiological functions of vitamin B12 are to prevent pernicious anemia , participate in the production of bone marrow red blood cells and maintain the health of the nervous system . The body needs very little vitamin B12 , and the recommended daily amount of vitamin B - 12 for adults is about 2.4 micrograms 

Once the human body lacks B12 vitamin , it may cause many clinical symptoms , such as anemia , nausea , vomiting , anorexia , weakness , fatigue , heart palpitations , shortness of breath , pale skin nerve damage , mood disturbances and so on . Vitamin B12 is generally stored in the liver for a long time , and the total is only about 2 mg to 3 mg . If not supplemented with new vitamin B12 , the stored vitamin B12 can still meet the body requirements for 3 to 5 years .

As long as you eat a balanced diet , you will not be deficient in vitamin B12 . In general , dairy products , eggs , fish , meat , poultry and animal offal , etc. , are rich in vitamin B12

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