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J Am Coll Nutr. 1994 Dec;13(6):615-22.

Dietary substitution of medium chain triglycerides in subjects with non-insulin-dependent diabetes mellitus in an ambulatory setting: impact on glycemic control and insulin-mediated glucose metabolism.

Author information

1
Department of Medicine, University of Colorado Health Sciences Center, Denver 80262.

Abstract

OBJECTIVE:

We have previously shown in an acute inpatient setting that dietary substitution of 77.5% of fat kcal as medium chain triglycerides (MCT) increased insulin-mediated glucose metabolism in patients with non-insulin-dependent diabetes mellitus (NIDDM), and that this effect appeared to be mediated by increases in insulin-mediated glucose disposal. The purpose of this study was to test the application of dietary substitution of medium chain triglycerides as an adjunctive tool in ambulatory therapy of NIDDM.

METHODS:

Five subjects with NIDDM underwent a baseline 6 hour insulin/glucose euglycemic clamp study, with simultaneous 3H-glucose infusion for calculation of glucose disposal rate and hepatic glucose output. Subjects were then randomized to begin one of two 30-day experimental diets, with long chain (LCT) or medium chain triglycerides (MCT), and subsequent crossover to the other diet. A 6 hour euglycemic clamp was repeated after each diet phase.

RESULTS:

Diet records and urinary organic acid excretion indicated a high level of dietary compliance by the study participants. Postprandial blood glucose excursions were less after one month on the diet with MCT than after the LCT diet (p = 0.004). However, fasting serum glucose, serum fructosamine (a measure of glycemia), fasting insulin, hepatic glucose output, and insulin-mediated glucose metabolism were not improved by the dietary substitution of MCT.

CONCLUSION:

These data indicate that supplementation of a tolerable amount of MCT in a conventional diabetic exchange diet has little impact on glycemic control in subjects with NIDDM in an ambulatory setting.

PMID:
7706596
DOI:
10.1080/07315724.1994.10718457
[Indexed for MEDLINE]

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