Vitamin (a) maintain the functions of the immune system and help protect the body from heart disease
Contribute to the quality and freshness of the skin and reduce wrinkles and symptoms of early aging
Vitamin (a) maintain the functions of the immune system and help protect the body from heart disease and cancer
D Rashwd Abdullah Alhqrawi
Is a vitamin (a) a type of fat-soluble vitamins and vitamins are usually divided into two parts, first group of fat-soluble vitamins include vitamins (a - d - e - k). Second group of vitamins dissolved in water and include vitamins (b) and vitamin (c). And vitamin A, which is known as the scientific Ritinol exists in two forms of natural either in the form of Retinol Ritinol food prepared from meat of animals or in the form of beta-carotene Beta-Carotene in the plant tissue and vitamin “A” several important functions in the body, which plays an important role posts in the immune system and help protect the body from heart disease and cancer, and it is essential for the growth of the skin and protect it with a key role in strengthening the vision.
The appropriate dose of vitamin A.
Usually differ from the requirements of vitamin A among all age groups
- The needs of the infant: The breast milk intake by infants during the first four months, enough for him to take the child could need, which was set at 300 to 450 micro grams per day or 50 per Maikarowerema per kilogram of weight.
- The needs of children aged 1 to 12, ranging from the needs of 250 to 570 Maikarowerema
- The needs of adults is estimated at 750 grams Micro Day Maikarowerema or equivalent to 12 per kilogram of body weight.
- The needs of pregnant and lactating women: usually do not need most of pregnant women to extra doses of vitamin A during pregnancy Vahtiajh equivalent of vitamin A requirement of adults and lactating mothers, but they need to increase the need of vitamin A are lost every day large quantities of vitamin A during lactation So the mother needs equivalent to the amount of nursing Day 1200 micrograms of the vitamin.
The symptoms of vitamin A deficiency:
And vitamin A deficiency causing disruption to the functions of the skin and mucous membranes and also difficult to discern in the darkness of the so-called night-blindness, where the ability to make adjustment to darkness after long periods of normal human being is able to adjust quickly in the darkness of a lack of vitamin may lead to long-term to match the eye and has Tegrahha This leads to the loss of blindness and to the full and this may be seen in poor countries such as India and some African countries because of poverty, hunger, poverty, affordable food component of vitamin A, usually dependent on the nutrition of cereals and pulses, which is poor in vitamin (a) and non-reliance on animal products such as liver, fish oil, butter, eggs, milk, cheese, Alakectp Thank God Gmawna is rich in the Arab world in this species. Also contributes to a lack of vitamin A in the inflammation of the mucous membranes of the nose on an ongoing basis and also plays a lack of vitamin A in the vulnerability and inability to withstand disease and also lack of appetite to eat
Overdose of vitamin A.
In general is not recommended to take up the doses in the form of a supplement of vitamin A pills to any case only after consulting a doctor there are serious consequences result from taking large amounts of it, this vitamin melts the fat does not melt in water and is therefore not be put with the urine, but the body stores in the liver and the lungs, heart and under the skin and often see symptoms of this vitamin poisoning in children who eat large amounts of fish oil or cod liver and the start of symptoms and loss of appetite, nausea and headache, followed by a sense of the need to vomit, diarrhea and associated Balnzk speed and passion.
Vitamin A and cancer
Advantage of vitamin A in addition to Albestackarutin provided in the food may well play a significant role in reducing risk factors in cancer study showed that eating vegetables rich in green and yellow Balbestackarutin addition to vitamin A may contribute to reducing the incidence of lung cancer, which is spreading among smokers and the decline of these elements in food may increase the incidence of some types of cancer, such Aavana In studies conducted in Italy and America, where the study was conducted on 2972 women between the ages of 30 to 70 years living with HIV, but in the first stages of breast and ovarian cancer have been added in the form of vitamin A doses given in their own food It is the results of this study made clear that the rate of infection has become a few of the women of the age of 50 years and where the vitamin A of antioxidants, which play an important role in reducing the free radicals, which is a strong foundation in health problems
Vitamin A and the freshness of the skin:
Although there are many external causes that play a major role in the integrity of the skin and Ndharth such as the progress in life as it contributed in large cells and Hermha and the lack of flexibility and this may be difficult for us to control it, but there are also some external factors that contribute to speed up the aging of the skin and the appearance of some wrinkles Alterhlat oxidizing substances such as skin or what is known as free roots that produce and increase their focus through a number of reasons such as pollution of outer halve the car, as well as smoking play a major role in the formation of these free radicals also found that fried food has a great role in the increase of these roots, which makes subject to the rights of the symptoms of aging that is recommended for those who wish to preserve the freshness of his face and address the amount of good fruits and vegetables, which is a good source of vitamins and minerals, and I like to make clear who would make the nutrition program to ensure that no starvation, Dieting is cruel because it would make the body and especially the members, such as skin losing many of the elements, vitamins and mineral shortages that will lead to a negative impact on the safety and freshness of the skin, leading to premature aging of the skin must therefore Bhmyat of the food to be under the supervision of specialists under the skin so that any problems
Vitamin A and the heart:
The most-known antioxidants, which protect the fatty molecules of protein, low-density pressure oxidation (oxidizers) are vitamin E, vitamin A, Albestackarutin bearing in mind that antioxidants protect the fatty molecules of protein, low-density fat oxidized, thus slowing the process and as part of the clotting Doctors ongoing studies on health, a study was conducted on a group of 333 individuals with a history of heart disease has been observed to eat 50 milligrams of Albtarutin day after day that it may have decreased the rate of heart attacks and angina, and death associated with heart disease by half, compared to those who do not eat food Supplementary
Vitamin A and the health of the eye
Noted that there is an urgent need for the vitamins in the vitamin (a) and the strength and integrity of the eye and vision because it plays a significant role in the safety of network composition and must be renewed for the supply sources of the vitamin the body was wrong to some people and I think that the islands is the only vegetables that provide the body in general and especially the eye of this vitamin therefore be focused only on the fruits of the islands were not aware that there are many sources of this vitamin, such as many vegetables such as squash, Alorkiet must therefore suffer from the weakness of his vision to provide the sources of vitamin (a) of the vegetables, and especially that we have because that will contribute to the safety of and the strength of vision and lack of any injury, eye problems and recommend to suffer from weakness in the vision to introduce himself to the doctor to make sure of the integrity and good deals with the quantities of vitamin (a)
Copyright 2009
This Informations Collected And Translated From Arabic Language By Mesothelioma Guide
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[...] Vitamin (a) maintain the functions of the immune system and help … [...]
Vitamin A supplementation is particularly important for people with retinal issues. For example, research supports taking 15,000 IU per day of Vitamin A for those with Retinitis Pigmentosa.
Vitamin A is a necessary structural component of rhodopsin or visual purple, the light sensitive pigment within rod and cone cells of the retina. If inadequate quantities of vitamin A are present, vision is impaired.
The 11-cis retinal form of vitamin A is essential for the neural transmission of light into vision.
A deficiency of vitamin A causes a deficit in the pigment needed by rod cells (responsible for our night vision). As a result, if fewer rod cells are able to sufficiently respond in darker conditions, night blindness can result.
Betacarotene is the water-soluble version of vitamin A (which is fat soluble), and can be converted to Vitamin A by the body as needed.
Food sources for betacarotene include yellow and orange vegetables, including yams, carrots and sweet potatoes, asparagus, spinach, butternut squash, kale, bok choy, mangoes, cataloupe and apricots.
Top sources of vitamin A include: beef liver, egg yolk, cheddar cheese and fortified milk.
For more information on nutrition and vision, go to Natural Eye Care