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American Journal of Clinical Nutrition, Vol 55, 461-467, Copyright © 1992 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Metabolic advantages of spreading the nutrient load: effects of increased meal frequency in non-insulin-dependent diabetes

DJ Jenkins, A Ocana, AL Jenkins, TM Wolever, V Vuksan, L Katzman, M Hollands, G Greenberg, P Corey and R Patten
Department of Nutritional Sciences and Preventive Medicine, Faculty of Medicine, St Michael's Hospital, Toronto, Ontario, Canada.

The acute effect of increasing meal frequency as a model of slow absorption was studied for 1 d in 11 patients with non-insulin- dependent diabetes. On 1 d they took 13 snacks (the nibbling diet) and on another day the same diet was taken as three meals and one snack (the three-meal diet). The nibbling diet reduced mean blood glucose, serum insulin, and C peptide concentrations over the 9.5 h of observation and 24-h urinary C peptide output by 12.7 +/- 3.7% (mean +/- SE) (P = 0.0062), 20.1 +/- 5.8% (P = 0.0108), 9.2 +/- 2.6% (P = 0.0073), and 20.37 +/- 8.12% (P = 0.039), respectively, compared with the three-meal diet. Serum triglyceride concentrations were lower by 8.5 +/- 3.2% (P = 0.037). Despite lower insulin concentrations on the nibbling diet, the concentrations of free fatty acids, 3- hydroxybutyrate, and the insulin-sensitive branched-chain amino acids responded similarly on both treatments. Metabolic benefits seen with increased meal frequency may explain the success of similar agents that prolong absorption, including fiber and enzyme inhibitors.


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