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2009 CHNRI International Essay Competition Winners

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Vitamin A is probably the best known vitamin and plays an essential physiological role in the body, affecting vision, growth and immunity. It influences cell differentiation in the epithelial lining of the eye and the respiratory tract,1 and the expression of over 300 genes.2 Vitamin A deficiency is a major public health problem, accounting for approximately 1.3–2.5 million infant and preschool child deaths worldwide.3 It is estimated that about 250,000–500,000 malnourished children in developing countries become blind each year due to vitamin A deficiency.4 Vitamin A deficiency also leads to a diminished ability to fight infections and may result in childhood deaths from complications of measles in places where vitamin A supplementation programs have not been implemented.5 At birth, the infant’s total liver stores of vitamin A in relation to its post-natal requirements are very small and just sufficient to meet the World Health Organization (WHO) estimate of the basal requirement of infants for about 10 days of life or 33 days in the best of circumstances.6The situation of infants in developing countries is further compounded by the fact that the vitamin A

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Key Details

Year 2010
Authors Tobias Schueth Tobias Schueth
Language English
Keywords
DOI https://doi.org/10.52439/DBNT3451
DOI Number 10.52439/DBNT3451
ISBN
ISSN

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