The study suggests that dark coffee can better protect the brain and may reduce the risk of Alzeimer's and Parkinson's diseases.
Researchers say dark coffee has the highest quantities of a compound that prevents two protein fragments common in those diseases.
They caution though, that the study does not suggest coffee is not a cure.
Researchers from the Krembil Brain Institute in Toronto tested Starbucks via instant light roast, dark roast, and decaffeinated dark roast.
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