What is considered normal for B12 count, if low what are the dangers?

Answer 1

I don't know the number values, but I do know that even people who eat plenty of food containing B12 can develop a deficiency. Many people as they age develop a condition called pernicious anemia, in which they no longer produce a substance in the stomach called "the intrinsic factor" which is needed to absorb B12 from food or ordinary vitamin supplements. The only way for people with this condition to absorb B12 is from shots (usually one a month) or tiny pills that are put under the tongue and absorbed that way.

A deficiency can cause balance problems and stumbling as an early symptom. Often one foot turns in. If untreated, it can lead to more serious neurological problems and even death.

It is hard to diagnose through a blood test, and the best way is a 24-hour urine test called the Schilling test. It is very important to get treated before permanent serious neurological damage is done.

B12 deficiency from diet is rare except in very strict vegans who eat neither milk nor eggs nor meat.

Answer 2

A lot of vegetarians, vegans have this problem its a source from meat and fish products, and all I know is its anaemia means:

you have less red blood cells than normal, or
you have less haemoglobin than normal in each red blood cell.

In either case, a reduced amount of oxygen is carried around in the bloodstream. There are a number of different causes of anaemia (such as lack of iron or certain vitamins).
Vitamin B12 is essential for life. It is needed to make new cells in the body such as the many new red blood cells which are made every day. Vitamin B12 is found in meat, fish, eggs, and milk - but not in fruit or vegetables. A normal balanced diet contains enough vitamin B12. A lack of vitamin B12 leads to anaemia, and sometimes to other problems.