Wednesday, 27 April 2016

Notes about Vitamins (Part-I)

               Vitamins are organic compounds which are essential for normal growth and nutrition and are required in small quantities in the diet because they cannot be synthesized by the body.

Function of Vitamins:
Vitamins are helpful for the health and life of the body in the following respects:
(a) They build up the resistance of the body against diseases.
(b) Prevent and cure various diseases caused by deficiency.
(c) Help the digestion and utilisation of mineral salts and Car­bohydrates in the body.
(d) Stimulate and give strength to digestive and nervous system.
(e) Help health protection.
(f) Help maintenance of proper health and normal growth.


Vitamins are classified as:
  
Water soluble vitamins( B,C ):  Water-soluble vitamins cannot be stored in the body for only a brief period of time and are then excreted by the kidneys, so you need to get them from food every day. They can be destroyed by overcooking. These are easily absorbed by the body.
Human body doesn't store large amounts of water-soluble vitamins.The one exception to this is vitamin B12, which is stored in the liver.
Vitamin C (ascorbic acid) and the B complex group make up the nine water soluble vitamins. The B complex group comprises of vitamins: 
B6 (pyridoxine)
B1 (thiamine)
B2 (riboflavin)
B12 (niacin, pantothenic acid, biotin, folic acid and cobalamin).

Fat soluble vitamins( A,D,K,E ): Fat-soluble vitamins are absorbed, together with fat from the intestine, into the circulation. Any disease or disorder that affects the absorption of fat, such as coeliac disease, could lead to a deficiency of these vitamins. Once absorbed into the circulation these vitamins are carried to the liver where they are stored.
Vitamins A, D and K are stored in the liver and vitamin E is distributed throughout the body's fatty tissues.

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