Most research pertaining to coffee and its health effects is based on coffee that is black or contains some sugar or milk rather than the fancy coffee beverages you can buy at a coffeehouse. These beverages contain coffee but also are frequently high in calories. For instance, a 24-ounce mocha iced blended coffee drink with whipped cream can contain up to 500 calories; this accounts for about 25 percent of the average person’s daily caloric intake. Because beverages tend to be less filling than foods, you aren’t as likely to eat fewer calories later in your day just because you had a calorie-rich beverage. Consuming too many calories can lead to weight gain and weight-related health problems such as type 2 diabetes.