During a research study, two healthy 24-year-old men receive 50-grams of IV glucose. One of the men simultaneously receives 10-grams of oral fatty acids. It is observed that glucose utilization is greater in this latter individual. Which of the following hormones best explains this finding?
Cholecystokinin
Gastrin
Glucose-dependent insulinotropic peptide
Motilin
Secretin
Vasoactive intestinal peptide
