American coffee only contains coffee and hot water, without adding extra high-calorie ingredients such as milk or syrup. American coffee is low in calories and contains almost no fat and sugar. If you want to lose weight, choosing pure black coffee will help control calorie intake. Latte coffee is a mixture of espresso, milk and a certain amount of syrup. Both milk and syrup increase the calories and sugar of coffee. In particular, lattes sold in some stores contain high syrup and whole milk, which will lead to the intake of extra calories, which is not conducive to weight loss.