When researchers talk about a cup of coffee, they mean an 8-ounce cup. With enormous mugs at home and the average take-out cups equaling 10 ounces or more, coffee calories can quickly add up. An 8-ounce cup of black coffee has 2 calories. One-ounce of coffee with cream and sugar has 10 calories, so a 10-ounce cup equals 100 calories. Add on shots of syrup, flavorings or whipped cream and the calories climb higher.
As with everything, coffee in moderation can be healthy for you but overdoing a good thing can tip the benefits in the wrong direction.
