All About Vitamins: Vitamin A Deficiency in Increased Risk of Wheezing

Kyle J. Norton(Scholar, Master of Nutrients), all right reserved.
Health article writer and researcher; Over 10.000 articles and research papers have been written and published on line, including world wide health, ezine articles, article base, healthblogs, selfgrowth, best before it's news, the karate GB daily, etc.,.
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Vitamin A, a bi-polar molecule formed by bonds between carbon and hydrogen, is a fat soluble vitamin which can not be stored in the liver but it can be converted from beta-carotene, a powerful antioxidant. The vitamin is best known fir its strong effects in improving vision and enhancing bone growth.

Vitamin A deficiency may alter the recovery of total respiratory resistance (TRR) inducing acute upper respiratory tract infection (URI).

According to the Chongqing Medical University, in a study of 331 hospitalized children suffered from wheezing, Serum vitamin A deficiency could be commonly found in infants with wheezing and might be related to the course of wheezing and the infants' wheezing severity.

Dr. Shalaby SA the lead researcher said, "Among the persistent wheezing patients 9.7% had deficient, and 20.4% had marginal serum vitamin A concentration, while in the acute wheezing patients, 1.6% had deficient, and 8.1% had marginal serum vitamin A concentrations" and " Wheezing Saudi infants had prevalent deficiency and marginal deficiency of vitamin A" in a prospective cohort study including 400 wheezing Saudi children aged 3-36 months.

In fact, wheeze is common throughout childhood, although it decreases as children age, but for children in the third world, nutrient deficiency including vitamin A deficiency may have a direct effect on risk of wheeze or risk for asthma.

Prescribing vitamin A supplement may be necessary for children with vitamin A deficiency should be taken with care as toxicity is found in many cases.

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Sources
(1) Vitamin A deficiency alters airway resistance in children with acute upper respiratory infection by Amaral CT1, Pontes NN, Maciel BL, Bezerra HS, Triesta AN, Jeronimo SM, McGowan SE, Dantas VM.(PubMed)
(2) Vitamin A deficiency and wheezing by Luo ZX1, Liu EM, Luo J, Li FR, Li SB, Zeng FQ, Qu P, Fu Z, Li TY.(PubMed)
(3) Vitamin A status in wheezing Saudi children by Shalaby SA1, Al-Harbi KM, El-Tarhouny SA.(PubMed)