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Raspberries May Aid Glucose Control With Prediabetes

Mar 7, 2019
 

With higher raspberry intake, individuals at risk for diabetes needed less insulin to manage blood glucose

THURSDAY, March 7, 2019 (HealthDay News) — Eating red raspberries may help with glucose control in people with prediabetes, according to a small study published online Feb. 14 in Obesity.

Di Xiao, from the Illinois Institute of Technology in Chicago, and colleagues investigated the effect of red raspberry intake on meal-induced postprandial metabolic responses in 21 participants with overweight or obesity and prediabetes and insulin resistance (PreDM-IR) and in 11 metabolically healthy individuals. Participants were randomly assigned to either 0 g of frozen red raspberries (control), 125 g (about 1 cup) of frozen red raspberries (RR-125), or 250 g (about 2 cups) of frozen red raspberries (RR-250), with a challenge breakfast meal (high carbohydrate/moderate fat) on three separate days. Multiple blood samples were evaluated.

The researchers found that in the PreDM-IR group, breakfast containing RR-125 and RR-250 significantly reduced two-hour insulin area under the curve (AUC), while RR-250 reduced peak insulin, peak glucose, and two-hour glucose AUC versus the control group (P < 0.05). After RR-125, postprandial triglycerides were significantly lower versus RR-250 (P = 0.01) but not compared with the control (P > 0.05). There were no significant meal-related differences for oxidative stress or inflammatory biomarkers.

“Our findings suggest that red raspberries aid in postmeal glycemic control in individuals with PreDM-IR, reducing glycemic burden with less insulin, which may be related to improved tissue insulin sensitivity,” conclude the authors.

The study was funded by the National Processed Raspberry Council.

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