It is necessary for normal functioning of an organism that with food all necessary vitamins arrived. Ignorances of what products contain what substance, can lead to avitaminosis and various violations in an organism.
For what vitamin A is necessary
The vitamin A which is also called Retinolum – the first vitamin which was emitted by scientists. This fat-soluble substance which influences a set of the processes proceeding in a human body. It takes part in synthesis of proteins, influences directly growth of bones, hair and teeth. Retinolum influences a metabolism and formation of the answer of the immune system, distribution of lipidic deposits. Vitamin A protects mucous, digestive tract, respiratory and urinogenital systems from penetration of infections.
For the correct growth and development it is especially important to children to use enough vitamin A. Women during pregnancy also should increase Retinolum dose that the fruit normally developed.
Vitamin A is extremely important for sight. This substance is responsible for adaptation of an eye to various degree of illumination, provides normal functioning of a retina, visual analyzers and a mucous membrane.
The shortage of Retinolum in an organism causes such illness as a night blindness – easing of sight at insufficient lighting.
Vitamin A is also called youth vitamin. He participates in formation of new cages and is responsible for smoothness and sufficient moisture content of skin, good condition of hair and nails.
What contains vitamin A
The deficiency of vitamin A can seriously affect health therefore it is necessary to watch closely the diet. In large numbers Retinolum contains in vegetables and fruit. Carrots, tomatoes, cabbage, apricots, plums, a sea-buckthorn, a melon, parsley, a guelder-rose, a celery are rich with it. As a result of heat treatment a part of vitamin A collapses therefore the summer is a fine opportunity to sate with it the organism. Retinolum has ability to be postponed in a liver therefore safely regale on gifts of the nature and remember that you will even be able to use the substances received from them in the winter. Mushrooms and bean also contain Retinolum. First of all it is worth paying attention to chanterelles and green peas – in these food most of all vitamin A. Cod-liver oil which is recommended to be used both to children, and adults is richest with Retinolum. From other animal products it is necessary to allocate cod liver and beef liver, caviar, margarine, a vitellus and also not fat-free milk and cream. At avitaminosis it is extremely heavy to fill shortage of vitamin A by means of healthy nutrition. As a rule, it is necessary to resort to treatment by medicamentous medicines. It is much simpler to eat properly and not to allow a similar state.