Is drinking a dunkin donuts iced coffee everyday bad for you?

Within this last year I have become insanely addicted to dunkin donuts iced coffees. I drink one medium a day, and there's some days when I force myself not to have any. So on average I would say I drink at least 20 coffees during a 30 day month. I know this sounds not half as bad as people who drink 5 cups of... show more Within this last year I have become insanely addicted to dunkin donuts iced coffees. I drink one medium a day, and there's some days when I force myself not to have any. So on average I would say I drink at least 20 coffees during a 30 day month. I know this sounds not half as bad as people who drink 5 cups of coffee A DAY. But I'm concerned because regular coffee isn't bad for you, however dunkin coffees are more sugary (even though I do not ever get sugar in mine) and I get the mocha flavoring. How bad is this?
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