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Recent study revealed that drinking polyphenol-rich 100% Concord grape juice was not associated with changes in appetite, energy intake or body weight
CONCORD, Mass., Oct. 6 /PRNewswire/ -- Regular consumption of 100% polyphenol-rich Concord grape juice did not cause significant weight gain, was not associated with changes in appetite and was shown to reduce waist circumference according to new data presented at the 49th Annual Meeting of the American College of Nutrition in Arlington, Virginia(i).
The 12 week, double-blind, placebo-controlled trial examined the effect of regular consumption of 100% Concord grape juice on body weight, diet quality, and markers of metabolic syndrome. The study included 76 men and women between the ages of 18 and 50 years who were slightly overweight (body mass index of 25.0 to 29.9). Each participant drank two 8-ounce servings of 100% Concord grape juice per day (n=25), a polyphenol-free grape-flavored drink (n=26) or was assigned to a non-treatment control group (n=25). The two test beverages were calorie and sugar matched but only the 100% Concord grape juice contained natural polyphenolic compounds(i).
Participants in the polyphenol-rich 100% Concord grape juice arm did not show significant weight gain whereas participants who drank the placebo gained on average 1.6kg / 3.4lbs (p<0.05) compared to baseline. Those in the 100% Concord grape juice arm did not show a significant change in appetite, while those who drank the placebo showed a significant decline in self-reported fullness (p<0.005) over the same time period. Furthermore, participants in the 100% Concord grape juice arm exhibited a significant reduction in waist circumference, demonstrating a beneficial effect on one of the markers of metabolic syndrome. There were no changes in other markers of metabolic syndrome, including cholesterol, triglyceride, and fasting glucose levels which were all within normal limits throughout the study.
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