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Blueberries

Blueberries and their juice are commonly associated with antioxidant power. These tiny fruits grow primarily in North America and are a rich source of polyphenols, such as anthocyanins. In a recent study, the phytochemicals found in blueberries were associated with improving insulin resistance in obese participants. The double-blind, randomized, placebo-controlled study required twice daily consumption of blueberry bioactives for a period of six weeks. At the end of the study period, participants who received the blueberry compounds showed a significant increase in insulin sensitivity over those given the placebo. Significant steps were taken to address potential confounding factors, such as counseling and monitoring participants to ensure there were no changes in weight or physical activity. Researchers concluded that further research to explore the cellular mechanisms and the potential for long-term benefits is needed.

For more information:
http://jn.nutrition.org/cgi/content/abstract/140/10/1764

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