According to Dr. Lilian Cheung, the Director of Health Promotion and Communication for the Department of Nutrition at Havard School of Public Health, "There is strong evidence that consuming sugary drinks - the largest source of sugar in American diets- is not good for health. Prospective studies, for example, have found that high intakes of sugar-sweetened beverages are associated with increased risk of obesity, diabetes and, heart disease." She adds that on a typical day, half of American comsume some type of sugared beverage. 

The American Heart Association recommends that women get no more than 100 calories from added sugar, and men 150...