NDLI: An oral lipid challenge and acute intake of caffeinated coffee additively decrease glucose tolerance in healthy men.

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An oral lipid challenge and acute intake of caffeinated coffee additively decrease glucose tolerance in healthy men.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Beaudoin, Marie-Soleil Robinson, Lindsay E. Graham, Terry E.
Description	Country affiliation: Canada Author Affiliation: Beaudoin MS ( Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, Ontario N1G 2W1, Canada.)
Abstract	Lipid-induced insulin resistance has been investigated primarily with i.v. infusions, and caffeine-induced insulin resistance, with alkaloid caffeine. The effects of orally consumed lipids and coffee have not been established and to our knowledge have never been simultaneously investigated. The goals of this study were to determine whether an oral lipid challenge and caffeinated coffee would disrupt glucose homeostasis and to characterize their respective incretin responses. It was hypothesized that oral ingestion of saturated lipids would impair glucose tolerance and that caffeinated coffee would further hinder glucose management. Ten young, healthy males participated in 5 trials in a randomized, cross-over design. At time 0 h, they underwent an oral fat tolerance test (OFTT: 1 g lipid/kg body weight) or consumed water, followed 5 h later by caffeinated (5 mg/kg) coffee, decaffeinated coffee, or water. At 6 h, volunteers underwent an oral glucose tolerance test (OGTT). Consumption of the OFTT increased glucose concentrations (P < 0.05) after a subsequent OGTT. At 7 h, caffeinated coffee produced the highest glucose concentrations (P < 0.05). Glucagon-like peptide-1 active (GLP-1a) and glucose-dependent insulinotropic polypeptide (GIP) were both increased for up to 6 h in all OFTT trials (P < 0.05). Compared to all other treatments, caffeinated and decaffeinated coffee produced higher GLP-1a response at 6.25 h (P < 0.05), whereas only caffeinated coffee increased GIP secretion (P < 0.05). These results show that oral consumption of lipids and caffeinated coffee can independently and additively decrease glucose tolerance. Incretin hormones could explain at least in part this impaired glucose homeostasis.
File Format	HTM / HTML
ISSN	00223166
Issue Number	4
Volume Number	141
e-ISSN	15416100
Journal	Journal of Nutrition
Language	English
Publisher	American Society for Nutrition
Publisher Date	2011-04-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Gastric Inhibitory Polypeptide Research Support, Non-u.s. Gov't Glucose Tolerance Test Peptide Fragments Cross-over Studies Humans Blood Glucose Male Administration & Dosage Glucose Glucagon-like Peptide 1 Coffee Metabolism Randomized Controlled Trial Insulin Blood Journal Article Incretins Young Adult Dietary Fats Analysis C-peptide Adult Discipline Nutrition
Content Type	Text
Resource Type	Article
Subject	Nutrition and Dietetics Medicine

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