Document Detail

Loss of body nitrogen on fasting.
MedLine Citation:
PMID:  463798     Owner:  NLM     Status:  MEDLINE    
An analysis of the change in total body nitrogen during fasting shows that it declines exponentially, a small fraction being lost rapidly (t 1/2 of a few days), and the remainder being lost slowly (t 1/2 of many months). The obese faster loses N, and weight, at a slower relative rate than the nonobese; and the ratio of N loss to weight loss during an extended fast is inversely related to body fat content, being about 20 g/kg in the nonobese and about 10 g/kg in those with body fat burdens of 50 kg or more. The loss of body N on a low protein-calorie adequate diet can also be described in exponential terms, and this function allows an estimate to be made of the N requirement.
G B Forbes; E J Drenick
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  The American journal of clinical nutrition     Volume:  32     ISSN:  0002-9165     ISO Abbreviation:  Am. J. Clin. Nutr.     Publication Date:  1979 Aug 
Date Detail:
Created Date:  1979-09-25     Completed Date:  1979-09-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0376027     Medline TA:  Am J Clin Nutr     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1570-4     Citation Subset:  AIM; IM    
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MeSH Terms
Body Weight
Dietary Proteins
Middle Aged
Nitrogen / metabolism*
Obesity / metabolism*
Reg. No./Substance:
0/Dietary Proteins; 7727-37-9/Nitrogen

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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