Consumption of a dark roast coffee blend reduces DNA damage in humans
"FundingThis study has been supported by Tchibo GmbH, Hamburg, Germany."Tchibo is a German chain of coffee retailers and cafés known for its range of non-coffee products that change weekly.https://en.wikipedia.org/wiki/TchiboNumber of locations
700 shops (Germany)
300 (rest of world)They might want to make some in-store claims about Dark Roast...