Vitamin A

Vitamin A have significant influence on the human body, and therefore they are called "children" vitamins. In particular, vitamin A supplementation of stunted children leads to an acceleration of growth by enhancing the formation of the skeleton and improve metabolism.
Vitamin A is also responsible for the proper functioning of tissues epithelium of the mucous membranes which formed the body: eyes, May and respiratory systems, urogenital systems and others.


Due to the fact that the mucous membrane serves as a protective barrier against infection organism , their normal state largely determines the overall immunity of the person.
In addition , Vitamin A is a powerful antioksydantom , ie it has the property neutralize the destructive effects of free radicals.
Vitamin A is found in most animal fats (except for lard ). It is also an indirect source of vitamin A can serve as herbs and vegetables containing carotene - a substance that is converted into vitamin A in the human body already . Carotene contained in carrots ( carrots exactly it was first isolated ) , squash, melons , peppers, peas, wild rose, apricot and peach.
The daily requirement for vitamin A man is 1-1.5 milihramma day. One third of this amount comes in the usual mixed diet food , but the missing two-thirds to be borne by carotene.
Deficiency of vitamin A , mucous membranes dry out and become thinner , which increases the probability of penetration into the body of infections.
Special exposure has deficiency of this vitamin in human vision . Its aldehyde form part of the visual pigment of the eye - rhodopsin (also called visual purple ). With a lack of vitamin A in the body , a person begins to develop so-called "night blindness" - reducing the clarity of light in Twilight .
The overall physical well-being also significantly depends on the presence of vitamins in this group. People who receive less vitamin A occurs fatigue, vuhruvatist skin and excessive deposition of sulfur in the ears . All this - the consequences of metabolic disorders.
Define the deficiency of vitamin A in the body can be the following features: dandruff , excessive accumulation of mucus in the corners of the eyes in the morning , easing erection , frequent respiratory infections.