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flag Wild blueberries may improve blood vessel function, with potential benefits for heart health, according to a new review.

flag A new review of 12 human trials finds wild blueberries may significantly improve blood vessel function, with promising but less certain benefits for blood pressure, lipids, and blood sugar. flag Researchers attribute the effects to polyphenols like anthocyanins, which gut microbes convert into active compounds. flag Grown in harsh climates like Maine and Canada, wild blueberries are more nutrient-dense than cultivated ones, and frozen versions are widely available. flag Experts recommend one cup daily, using them in smoothies, yogurt, or baking, and highlight other polyphenol-rich berries like chokeberries and cranberries. flag While more research is needed, the findings support including wild, heirloom, and seasonal fruits in a balanced diet for heart and gut health.

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