The fruit from Aristotelia chilensis (Molina) Stuntz (Elaeocarpa- ceae), commonly known as Maqui Berry (MB), Chilean blackberry or ‘‘maqui’’ in Chile and Argentina, is a common wild, edible berry in central and southern Chile MB has been recently reported as one of the healthiest exotic berries, due to its particularly high concentration of bioac- tive polyphenols Indeed, the fruit from A. chilensis display one of the highest ORAC antioxidant capacities and anthocyanin concentration compared with other edible berries The polyphenolic profile of MB has been partially studied by different authors and the major anthocyanins found in MB are glycosylated forms of del- phinidin and cyanidin. Surprisingly, to date the biochemistry and health-promoting properties of MB have been scarcely studied. Evidence suggests that phenolic compounds extracted from MB display cardioprotective effects against ischaemia–reperfusion heart damage in mice In line with this evi- dence, another set of data from in vitro studies proposes that the anthocyanins from MB inhibit adipogenesis and inflammation, and prevent LDL oxidation . A. chilensis has also been used in Chilean traditional medicine as antidiarrhoeic , anti-inflammatory and antipyretic . MB’s potent antiox- idant activity may be responsible for the inhibition of skin oxida- tive damage . Several groups including ours have reported that dietary polyphenolics, including anthocyanins from berries, dis- play potent antidiabetic effects and represent a promising source of functional foods with antidiabetic properties. Interestingly, even though MB has a particularly high concentration of anthocyanins,the effect of MB’s anthocyanins on glucose metabolism and insulin resistance has not yet been researched.