Research: YU and COLLEAGUES,

Listed in Issue 234

Abstract

YU and COLLEAGUES, (1)Rippe Lifestyle Institute, Celebration, FL conducted a randomized, prospective double-blind group study to compare the metabolic effects between high-fructose corn syrup (HFCS) and sucrose at low, medium and high consumption levels.

Background

Intake of high-fructose corn syrup (HFCS) has been suggested to contribute to the increased prevalence of obesity, whereas a number of studies and organizations have reported metabolic equivalence between HFCS and sucrose. We hypothesized that HFCS and sucrose would have similar effects on energy-regulating hormones and metabolic substrates at normal levels of human consumption and that these values would not change over a 10-week, free-living period at these consumption levels.

Methodology

This was a randomized, prospective, double-blind, parallel group study in which 138 adult men and women consumed 10 weeks of low-fat milk sweetened with either HFCS or sucrose at levels of the 25th, 50th, and 90th percentile population consumption of fructose (the equivalent of 40, 90, or 150 g of sugar per day in a 2000-kcal diet). Before and after the 10-week intervention, 24-hour blood samples were collected. The area under the curve (AUC) for glucose, insulin, leptin, active ghrelin, triglyceride, and uric acid was measured.

Results

There were no group differences at baseline or post-testing for all outcomes (interaction, P > .05). The AUC response of glucose, active ghrelin, and uric acid did not change between baseline and posttesting (P > .05), whereas the AUC response of insulin (P < .05), leptin (P < .001), and triglyceride (P < .01) increased over the course of the intervention when the 6 groups were averaged.

Conclusion

We conclude that there are no differences in the metabolic effects of HFCS and sucrose when compared at low, medium, and high levels of consumption.

References

Yu Z(1), Lowndes J, Rippe J. High-fructose corn syrup and sucrose have equivalent effects on energy-regulating hormones at normal human consumption levels.  Nutr Res 33(12): 1043-52. doi: 10.1016/j.nutres.2013.07.020. 2013 Dec. Epub Aug 30 2013.

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