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Review Of Dietary Advice On Vitamin A

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Review Of Dietary Advice On Vitamin A

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Author : Great Britain: Scientific Advisory Committee on Nutrition: Vitamin A Subgroup
language : en
Publisher: The Stationery Office
Release Date : 2005-09-12

Review Of Dietary Advice On Vitamin A written by Great Britain: Scientific Advisory Committee on Nutrition: Vitamin A Subgroup and has been published by The Stationery Office this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-09-12 with Business & Economics categories.

This report reassess the dietary advice to consumers on foods and supplements containing Vitamin A (retinol), given evidence from the National Diet and Nutrition Survey that the dietary intake for some adults might exceed the safety guidance level set by the Expert Group on Vitamins and Minerals (EVM) in 2003. Liver and dietary supplements (including fish liver oils) are the main sources of retinol. The report concludes that there is insufficient evidence on the association between high intakes of retinol and poor bone health to justify a change in dietary advice for all consumers, but as a precaution for those who are regular consumers of liver (once a week or more) it may be advisable to avoid supplements containing retinol. People at risk of osteoporosis (such as postmenopausal women and older people) are also advised to limit their retinol intakes. Further research is needed on the relationship between retinol intake and bone fracture risk.

Can Food Based Strategies Help Reduce Vitamin A And Iron Deficiencies

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Author : Marie T. Ruel
language : en
Publisher: Intl Food Policy Res Inst
Release Date : 2001

Can Food Based Strategies Help Reduce Vitamin A And Iron Deficiencies written by Marie T. Ruel and has been published by Intl Food Policy Res Inst this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with Health & Fitness categories.

Throughout the developing world, poor people subsist on diets consisting of staple foods such as rice or maize and little else.The lack of diversity in the foods they eat often leads to micronutrient deficiencies. Almost one-third of the children in devel

The Vitamin A Story

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Author : Richard D. Semba
language : en
Publisher: Karger Medical and Scientific Publishers
Release Date : 2012

The Vitamin A Story written by Richard D. Semba and has been published by Karger Medical and Scientific Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Medical categories.

Intriguing reading for specialists and the interested public alike This book shows how vitamin A deficiency -- before the vitamin was known to scientists -- affected millions of people throughout history. It is a story of sailors and soldiers, penniless mothers, orphaned infants, and young children left susceptible to blindness and fatal infections. We also glimpse the fortunate ones who, with ample vitamin A-rich food, escaped this elusive stalker. Why were people going blind and dying? To unravel this puzzle, scientists around the world competed over the course of a century. Their persistent efforts led to the identification of vitamin A and its essential role in health. As a primary focus of today's international public health efforts, vitamin A has saved hundreds of thousands of lives. But, we discover, they could save many more were it not for obstacles erected by political and ideological zealots who lack a historical perspective of the problem. Although exhaustively researched and documented, this book is written for intellectually curious lay readers as well as for specialists. Public health professionals, nutritionists, and historians of science and medicine have much to learn from this book about the cultural and scientific origins of their disciplines. Likewise, readers interested in military and cultural history will learn about the interaction of health, society, science, and politics. The author's presentation of vitamin A deficiency is likely to become a classic case study of health disparities in the past as well as the present.

Dietary Reference Intakes For Vitamin A Vitamin K Arsenic Boron Chromium Copper Iodine Iron Manganese Molybdenum Nickel Silicon Vanadium And Zinc

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Author : Institute of Medicine
language : en
Publisher: National Academies Press
Release Date : 2002-07-19

Dietary Reference Intakes For Vitamin A Vitamin K Arsenic Boron Chromium Copper Iodine Iron Manganese Molybdenum Nickel Silicon Vanadium And Zinc written by Institute of Medicine and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002-07-19 with Medical categories.

This volume is the newest release in the authoritative series issued by the National Academy of Sciences on dietary reference intakes (DRIs). This series provides recommended intakes, such as Recommended Dietary Allowances (RDAs), for use in planning nutritionally adequate diets for individuals based on age and gender. In addition, a new reference intake, the Tolerable Upper Intake Level (UL), has also been established to assist an individual in knowing how much is "too much" of a nutrient. Based on the Institute of Medicine's review of the scientific literature regarding dietary micronutrients, recommendations have been formulated regarding vitamins A and K, iron, iodine, chromium, copper, manganese, molybdenum, zinc, and other potentially beneficial trace elements such as boron to determine the roles, if any, they play in health. The book also: Reviews selected components of food that may influence the bioavailability of these compounds. Develops estimates of dietary intake of these compounds that are compatible with good nutrition throughout the life span and that may decrease risk of chronic disease where data indicate they play a role. Determines Tolerable Upper Intake levels for each nutrient reviewed where adequate scientific data are available in specific population subgroups. Identifies research needed to improve knowledge of the role of these micronutrients in human health. This book will be important to professionals in nutrition research and education.

Dietary Reference Intakes For Calcium And Vitamin D

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Author : Institute of Medicine
language : en
Publisher: National Academies Press
Release Date : 2011-03-30

Dietary Reference Intakes For Calcium And Vitamin D written by Institute of Medicine and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-03-30 with Medical categories.

Calcium and vitamin D are essential nutrients for the human body. Establishing the levels of these nutrients that are needed by the North American population is based on the understanding of the health outcomes that calcium and vitamin D affect. It is also important to establish how much of each nutrient may be "too much." Dietary Reference Intakes for Calcium and Vitamin D provides reference intake values for these two nutrients. The report updates the DRI values defined in Dietary Reference Intakes for Calcium, Phosphorus, Magnesium, Vitamin D, and Fluoride, the 1997 study from the Institute of Medicine. This 2011 book provides background information on the biological functions of each nutrient, reviews health outcomes that are associated with the intake of calcium and vitamin D, and specifies Estimated Average Requirements and Recommended Dietary Allowances for both. It also identifies Tolerable Upper Intake Levels, which are levels above wish the risk for harm may increase. The book includes an overview of current dietary intake in the U.S. and Canada, and discusses implications of the study. A final chapter provides research recommendations. The DRIs established in this book incorporate current scientific evidence about the roles of vitamin D and calcium in human health and will serve as a valuable guide for a range of stakeholders including dietitians and other health professionals, those who set national nutrition policy, researchers, the food industry, and private and public health organizations and partnerships.

Dietary Reference Intakes For Vitamin C Vitamin E Selenium And Carotenoids

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Author : Institute of Medicine
language : en
Publisher: National Academies Press
Release Date : 2000-08-27

Dietary Reference Intakes For Vitamin C Vitamin E Selenium And Carotenoids written by Institute of Medicine and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000-08-27 with Medical categories.

This volume is the newest release in the authoritative series of quantitative estimates of nutrient intakes to be used for planning and assessing diets for healthy people. Dietary Reference Intakes (DRIs) is the newest framework for an expanded approach developed by U.S. and Canadian scientists. This book discusses in detail the role of vitamin C, vitamin E, selenium, and the carotenoids in human physiology and health. For each nutrient the committee presents what is known about how it functions in the human body, which factors may affect how it works, and how the nutrient may be related to chronic disease. Dietary Reference Intakes provides reference intakes, such as Recommended Dietary Allowances (RDAs), for use in planning nutritionally adequate diets for different groups based on age and gender, along with a new reference intake, the Tolerable Upper Intake Level (UL), designed to assist an individual in knowing how much is "too much" of a nutrient.

Dietary Reference Intakes For Vitamin A Vitamin K Arsenic Boron Chromium Copper Iodine Iron Manganese Molybdenum Nickel Silicon Vanadium And Zinc

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Author : Institute of Medicine
language : en
Publisher: National Academies Press
Release Date : 2002-07-19

Manual On Vitamin A Deficiency Disorders Vadd

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Author : Donald Stewart McLaren
language : en
Publisher: Karger Medical and Scientific Publishers
Release Date : 2012

Manual On Vitamin A Deficiency Disorders Vadd written by Donald Stewart McLaren and has been published by Karger Medical and Scientific Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Medical categories.

An up-to-date and comprehensive handbook Vitamin A plays a key role among the vitamins essential for healthy growth and development. Vitamin A deficiency disorders (VADD) are therefore an important part of general malnutrition that in the majority of cases leads to failure to thrive and underweight. Moreover, apart from adverse effects on health and survival in general, VADD can also lead to blindness, called xerophthalmia, and are also frequently accompanied by various infections. Last but not least, it has become evident that even mild degrees of VAD (and all other forms of nutritional deficiencies) have important adverse implications for health and are thus much more widespread than previously assumed. This publication systematically covers detailed and up-to-date information on every relevant aspect of VADD, with particular emphasis on providing an outline of their setting, nature, and significance. In addition to cutting-edge scientific information, the latest available data on the global occurrence of VAD from the World Health Organization is also included.

Vitamins In Foods

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Author : George F.M. Ball
language : en
Publisher: CRC Press
Release Date : 2005-11-01

Vitamins In Foods written by George F.M. Ball and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-11-01 with Medical categories.

To achieve and maintain optimal health, it is essential that the vitamins in foods are present in sufficient quantity and are in a form that the body can assimilate. Vitamins inFoods: Analysis, Bioavailability, and Stability presents the latest information about vitamins and their analysis, bioavailability, and stability in foods.

Bioavailability And Analysis Of Vitamins In Foods

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Author : G. F. M. Ball
language : en
Publisher: Springer
Release Date : 2013-11-11

Bioavailability And Analysis Of Vitamins In Foods written by G. F. M. Ball and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-11-11 with Medical categories.

Every country in the world is concerned with the nutritional status of its population and in utilizing its natural food resources in the most effective way possible. Surveys based on food intakes and food compositional data are being conducted with the object of establishing recommended intakes of vitamins. These recommendations are constantly being changed as new knowledge comes to light. Analytical techniques using physicochemical and microbiological methods have been largely developed to determine the total vitamin content of a food commodity or diet using the most rigorous extraction method commensurate with the stability of the vitamin. The extraction procedures frequently involve prolonged heating of suitably prepared food samples at extremes of pH to liberate vitamins from chemically bound forms in the food matrix or to remove a preponderance of fat from fatty foods. For several vitamins the data obtained by these means grossly overestimate the nutritional value of the food because the human digestive system fails to liberate bound vitamin forms for subsequent absorption by the intestine. This statement is borne out by reports of vitamin deficiency in situations where the dietary supply of vitamin is adequate on the basis of conventional analysis. Various research labora tories are directing their effort toward the estimation of bioavailable vitamin, i. e. the proportion of vitamin in the food which is available for utilization by the body. So far, few data have been published and there are many gaps in the knowledge required to interpret experimental results.

Review Of Dietary Advice On Vitamin A

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