The deficiency of Vitamin B12 can trigger symptoms similar to the nervous system and brain disorder. As the deficiency often leads a person to anaemia, the symptoms are also similar to it. Common symptoms of vitamin B12 include:
Excluding animal food products possesses greater risks of vitamin B12 deficiency. This condition can also occur under pernicious anaemia (an autoimmune disease), Crohn's disease, chronic alcoholism and other conditions in which the body is unable to absorb vitamin B12. 
The deficiency of B12 can easily be treated by consuming foods enriched with it. However, if the condition lasts long, it may cause serious complications like the following:
Before performing any tests, the medical expert will ask for the patient's diet, family history (for any autoimmune disorder) and medical history which may be responsible for vitamin B12 deficiency. Tests involved in diagnosing the condition are as follows:
The treatment for vitamin B12 includes the following:
Note: A high intake of vitamin B12 supplements and injections can be toxic and may result in several side effects. Consult a medical expert before starting it.
Vitamin B12 is vital for our body for the proper functioning of the brain and nerves and manufacturing of red blood cells and DNA. It is a water-soluble vitamin that travels across the bloodstream and keeps the nerves and cells healthy. Foods are the natural source of vitamin B12. It is mainly found in animal products like eggs, beef, pork, lamb, meat and fish and dairy products like yoghurt and milk. Fortified breakfast cereals are also a good example of vitamin B12 source, especially if you are a vegetarian.
Vitamin B12 is known to have many health benefits, and the deficiency of B12 may cause several neurological disorders like memory loss, blurred vision and anaemia. There are limitations on the use of its supplements depending on an individual's age, medical conditions and dietary habits. It also varies when the woman is pregnant or lactating.Cause Of Vitamin B12 Deficiency
There are two main causes for the deficiency of vitamin B12. They are as follows:
1. Insufficient consumption of vitamin B12: It usually occurs in people who are vegans or people who do not consume meat or other animal products. The only option available for them is foods fortified with B12 like soy products and cereals.
2. Body's incapability to absorb and store the vitamin: They are caused due to several reasons like the following: