Blueberries, bilberries, blackcurrants, cranberries and strawberries are rich in flavonoid compounds (eg anthocyanins, flavonols, phenolic acids, ellagitannins and proanthocyanidins). Regular consumption of these plant-based phytochemicals are associated in observational studies with a reduction in the risk of type 2 diabetes and death from cardiovascular disease. In animal studies, blueberries have been shown to improve mental performance and even reverse some degree of memory impairment.
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