Vitamin B12 is also known as Cobalamin. It is soluble in water, but destroyed by acids and alkalis, sunlight, sleeping pills, alcohol and oestrogen. Smokers have low levels of vitamin B12.
Functions of Vitamin B12
Like some other vitamins of the B group, vitamin B12 is vital for the production of red blood cells. It also increases platelets and white blood cells. It is essential for the utilization of proteins, fats and carbohydrates required for body building. It increases the appetite and boosts growth in children, and acts as a tonic for the elderly.
Vitamin B12 plays a major role in metabolism, especially of folic acid. It is required for DNA metabolism. Along with folic acid, it boosts the immune system. Moreover, it is required for the proper functioning of the nervous system, and increases memory and concentration.
Sources of Vitamin B12
Vitamin B12 is found mainly in animal foods like meat and eggs. For vegetarians, milk and dairy products are the main sources, so supplements are often prescribed.
Deficiency of Vitamin B12
Deficiency of vitamin B12 occurs more due to malabsorption rather than an inadequate diet. Absorption is hindered if there is insufficient quantity of gastric juice. Protein rich food and calcium helps in the absorption of vitamin B12 from the intestine. Unlike other water soluble vitamins, vitamin B12 is stored in the body in the liver.
Symptoms of vitamin B12 deficiency appear after a very long time. Lack of vitamin B12 causes pernicious anemia, chronic fatigue, lack of concentration and mental energy. Deficiency affects the nerves and cells, as well as the nervous system, so there is degeneration of nerve cells.
Therapeutic Uses of Vitamin B12
Vitamin B12 is used to treat conditions like anemia, fatigue, depression, irritability, insomnia, lack of concentration and memory. Since assimilation of oral intake is difficult, injections are generally prescribed.
Vitamin B12 is required for metabolism, a healthy nervous system, appetite, growth, immunity and concentration. It is found mainly in animal foods and milk and its products. However, a number of factors can lead to malabsorption. Vitamin B 12 is used for therapeutic purposes, mainly in the form of injections.
Disclaimer: The information contained in this article is for educational purposes only; it should not be used for diagnosis or to guide treatment without the opinion of a health professional. Any reader who is concerned about his/her health should contact a licensed medical professional.
Sources:
- Goyal, G.C, Vitamins for Natural Healing, Diamond books, 2005
- Bakhru, Dr.H.K, Vitamins that Heal, Orient paperbacks, 1998
- Umm.edu, Vitamin B12, (accessed April 25, 2011).
- Ods.od.nih.gov, Vitamin B12, (accessed April 25, 2011).
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