Document Detail

Impact of genetic and environmental determinants of taste with food preferences in older adults.
MedLine Citation:
PMID:  19042575     Owner:  NLM     Status:  MEDLINE    
Individual differences in the ability to detect bitter tasting compounds, such as phenylthiocarbamide (PTC) or its derivative, 6-n-propylthiouracil (PROP) has long been recognized as a common genetic trait. This observation has been proposed to explain some of the variability in the dietary habits of a population. Several members of the TAS2R receptor gene family encode taste receptors on the tongue, and genetic polymorphisms of TAS2R38 have been associated with marked differences in the perception of PTC and PROP. An association between TAS2R38 genotype and food preferences has been found among children, but no associations have been reported among older adults. This, along with the decreased ability to taste certain foods with increasing age, suggests that environmental factors are more important than genetic influences in food preferences among the elderly. The elderly may be more inclined to try and accept novel foods because of diet-related attitudes and beliefs that are formulated throughout the years.
Alejandra Navarro-Allende; Nora Khataan; Ahmed El-Sohemy
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Journal of nutrition for the elderly     Volume:  27     ISSN:  0163-9366     ISO Abbreviation:  J Nutr Elder     Publication Date:  2008  
Date Detail:
Created Date:  2008-12-01     Completed Date:  2009-01-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8208739     Medline TA:  J Nutr Elder     Country:  United States    
Other Details:
Languages:  eng     Pagination:  267-76     Citation Subset:  IM    
Department of Nutritional Sciences, Faculty of Medicine, University of Toronto, 150 College Street, Toronto, Ontario, Canada.
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MeSH Terms
Aged, 80 and over
Aging / genetics,  physiology
Food Habits / physiology*
Food Preferences* / physiology
Polymorphism, Genetic / genetics
Taste* / genetics,  physiology

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