Vitamin B-12 is an important vitamin that you usually get from your food. Vitamin B-12 comes in several forms, and it is alternately known by the names derivative of cobalamin such as cyanocobalamin, cobalamyns, and hydroxycobalamin. Vitamin B-12, which is stored in the liver, plays an integral role in the human body in the manufacture of genetic material of cells which is essential for growth and development. Vitamin B-12 is also active and vital in the role of many enzymatic functions in the human body. Without Vitamin B-12, the formation of red blood cells in the bone marrow of the body would be impossible.
Vitamin B-12 is found only in animal products. Excellent sources include organ meats and mollusks such as clams and oysters. Moderate amounts are contained in egg yolks, muscle meats,poultry, fish, fermented cheeses and dry milk. There is no human-active form of B-12 in algae such as nori and spirulina; the forms are all analogues. The dietary sources for Vitamin B-12 are easily obtained, although you need only minute quantity of this Vitamin in order for proper functioning. The absolute best source of Vitamin B-12 is found in liver, closely followed by kidneys, lean meats, eggs, fish, chicken, milk and dairy products.
Vegetarians, who do not eat meat or dairy products, are at risk for low Vitamin B-12 usually about 2 years after they become vegetarians. Most people with low Vitamin B-12 levels have trouble absorbing Vitamin B-12 from their stomach or small intestines. You might not have any symptoms if your Vitamin B-12 level is just a little bit low. However, a very low Vitamin B-12 level can cause anemia, depression, dementia or a serious problem with your nervous system.
Vitamin B-12 deficiency does occur, but takes longer to develop, rather than quickly because the liver can store up to a 6 year supply of the body's needs for Vitamin B-12.
Thefirst signs of Vitamin B-12 deficie

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