They proposed three possible causes:1. . Drinking liquids does not fulfill health like eating solid foods because the body does not recognize calories from liquids either. So, instead of feeling full and stopping, people continue to eat or drink.2. Sugary drinks can make you hungry and encourage you to eat more.3. A can of sugary drink may have more calories than a cookie, but it doesn't seem like that's the case, so people will drink it without realizing how much they have. ("Sugary drinks.") If someone consumed too much sugar, it could "lead to tooth decay." It could also make a person "prone to being overweight, as sugary foods tend to be relatively high in calories, particularly if they are also fatty." Generally, a food containing milk or fruit would be a healthier choice than a food containing the same amount of sugar but without dairy or fruit ingredients. (“Healthy Eating Overview.”) Another problem is that many foods contain added sugar, but it's not always easy to know. Sugar can be hidden in the form of sucrose, syrup, molasses, dextrose, fruit juice concentrates, etc. (“NIH News in Health.” October.