Vitamin:-
An organic compound
that has a vital nutrients and requires in a little amount for organisms is
known as Vitamin.Vitamins refers to a ‘vitamir’ compounds that essentially show
biological activity to the particular vitamin.All vitamins are not so far
necessary for all,but speciy for particular organisms.For Example one type of
the vitamin i.e,ascorbic acid it has specified for humans but not for animals.About
thirteen vitamins are universally recognized at present.
Classification of Vitamins:-
Vitamins are either
Classified into two types
- Fat-soluble Vitamins
- Water-soluble Vitamins
Fat-soluble Vitamins:-
These type of
vitamins are mainly found in fatty foods and animals products such as
milk,eggs,oils,fish and butter.It is not necessary to get all vitamins in
time,if you used it more as compared to body requirements it will cause
dangerous effects on body.
Fat-soluble vitamins are;
- Vitamin A
- Vitamin D
- Vitamin E
- Vitamin K
Water-soluble Vitamins:-
Water-soluble
vitamins are not stored in the body,so these vitamins are necessary in much
more requirements as compared to Fat-soluble vitamins.Water-soluble vitamin are
found in a wide variety of food like that of Vegetables,Potatoes,Grains,Milk
and diary foods.
Water-soluble Vitamins;
- Vitamin C
- Vitamin B
- Folic acid
Role of Vitamin A
and and E in the Body:-
Vitamin A:-
Vitamin A is
an essential component of rhodopsin,a protein that absorbs light in the retinal
receptors because it supports the normal differentiation and functioning of the
conjunctival membranes and cornea.A large quantity of Vitamin A is found in
Liver and Fish oils,also the other sources of the vitamin A milk and egg which
also include some provitamin.Vitamin A comes from leafy green vegetables,tomato
products and vegetables oils
This type of vitamin
is rarely deficient in United States,because of developing countries.According
to WHO(World Health Organization) 190 preschool- aged children and 19.1 million
pregnant women have a serum retinal concentration low as 0.7
micromoles/L.Chronic diarrhea also leads to excessive loss of Vitamin A in
young childrens and in adults its low level will leads to the causes of
Diarrhea.The most common symptom of Vitamin A deficiency in young children and
in pregnant women.The deficiency will be observed as the early signs of Xerophthalmia
(The symptom of this disease is night blindness).
Vitamin A plays an
important role in regulating cell growth and differentiation and the defficency
sometimes cause Cancer.Measles is a major cause of morbility and mortality in
children in develoing countries.About half of all measles death happens in
Africa,but the low-income contries are under this diseases.The deficiency of
Vitamin A cause several measles.The World Health Organization recommended high
dose of Vitamin A for childres over Age 2 who lives in Vitamin A deficient
areas.
Vitamin E:-
Like that of Vitamin A Vitamin E is an
essential component for life.Sodium Naturally occurring Vitamin E exists in
eight chemicals forms,that have varying levels of biological activity
topopherol is the only form that is recognized to meet human requirements.Serum
Concentration of Vitamin E depend on liver,which takes up the nutrients after
the various forms are absorbed from the small intestine .The liver
preferentially resecretes only alpha-topopherol via the hepatic
alpha-topopherol transfer protein.
Vitamin E deficiency is rare and overt
deficiency symptoms have not been found
in healthy people who obtain little Vitamin E from their diets.Premature babies
of very low birth weight might be deficient in Vitamin E.Vitamin E infants
might be reduced the risk of many complication diseases like that of affecting
on Retina.It also control many coronary and cardiovascular diseases which is
caused by the deficiency of vitamin E.
For more useful articles on Health visit:-
0 comments:
Post a Comment