Document Detail


Perspectives and progress on upper levels of intake in the United States.
MedLine Citation:
PMID:  23077188     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
In the US, recognition of the appropriateness of including an upper level of intake estimate among reference values for nutrient substances was made in 1994 when the Food and Nutrition Board of the Institute of Medicine (IOM) specified the inclusion of an "upper safe" level among its proposed reference points for intake of nutrients and food components. By 1998, a group convened by the IOM had established a risk assessment model for establishing upper intake levels for nutrients, eventually termed the tolerable upper intake levels (UL). A risk assessment framework (i.e., a scientific undertaking intended to characterize the nature and likelihood of harm resulting from human exposure to agents in the environment), as developed in other fields of study, was a logical fit for application to nutrients. But importantly, whereas risk assessment requires that information be organized in specific ways, it does not require specific scientific evaluation methods. Rather, it makes transparent and documents the decision-making that occurs given the available data and the related uncertainties. During the 1990s and beyond, the various IOM committees charged with developing UL for a range of nutrients utilized the risk assessment framework, making modifications and adjustments as dictated by the data. This experience informed the general organizational process for establishing UL but also underscored the dearth of data. For many reasons, undertaking scientific research and obtaining data about the effects of excessive intake have been challenging. It is time to consider creative and focused strategies for modeling, simulating, and otherwise studying the effects of excessive intake of nutrient substances.
Authors:
Christine L Taylor; Linda D Meyers
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural     Date:  2012-10-17
Journal Detail:
Title:  The Journal of nutrition     Volume:  142     ISSN:  1541-6100     ISO Abbreviation:  J. Nutr.     Publication Date:  2012 Dec 
Date Detail:
Created Date:  2012-11-21     Completed Date:  2013-03-25     Revised Date:  2013-12-04    
Medline Journal Info:
Nlm Unique ID:  0404243     Medline TA:  J Nutr     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2207S-2211S     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Energy Intake*
Humans
Institute of Medicine (U.S.)
Nutrition Policy*
Nutritional Requirements
Reference Values
Risk Assessment / methods*
United States
Comments/Corrections

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