| Sweet future: fluctuating blood glucose levels affect future discounting. | |
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MedLine Citation:
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PMID: 20424042 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study explored metabolic mechanisms of future (delay) discounting, a choice phenomenon where people value present goods over future goods. Using fluctuating blood glucose as an index of body-energy budget, optimal discounting should regulate choice among rewards as a function of temporal caloric requirement. We identified this novel link between blood glucose levels measured in the lab and future-discounting rates of participants, who made choices between a "smaller and sooner" reward and a "larger but later" option, with possible actual monetary rewards. A group of participants who drank a soft drink that contained sugar showed a reduced rate of future discounting afterward, when we controlled for sex, age, body mass index, and the taste of the drink. In contrast, a group of participants who drank a soft drink that contained artificial sweetener showed an increased rate of future discounting. Blood glucose levels not only varied as a result of caloric intake but also regulated the rate of future discounting, according to participants' dynamic body-energy budget. |
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Authors:
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X T Wang; Robert D Dvorak |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't Date: 2010-01-20 |
Journal Detail:
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Title: Psychological science Volume: 21 ISSN: 1467-9280 ISO Abbreviation: Psychol Sci Publication Date: 2010 Feb |
Date Detail:
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Created Date: 2010-04-28 Completed Date: 2010-09-27 Revised Date: 2011-09-06 |
Medline Journal Info:
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Nlm Unique ID: 9007542 Medline TA: Psychol Sci Country: United States |
Other Details:
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Languages: eng Pagination: 183-8 Citation Subset: IM |
Affiliation:
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Department of Psychology, University of South Dakota, Vermillion, SD 57069, USA. xtwang@usd.edu |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Blood Glucose / metabolism* Choice Behavior / physiology* Cognition / physiology Decision Making / physiology Energy Intake / physiology Energy Metabolism / physiology Female Humans Intention Male Middle Aged Motivation* Reward* Young Adult |
| Chemical | |
Reg. No./Substance:
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0/Blood Glucose |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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