Can you guess where people buy most of their junk food? Chances are that fast-food restaurants like McDonald's and Burger King come to mind. A new study described in the European Journal of Clinical Nutrition , however, reveals that U.S. adults buy the bulk of their empty-calorie foods and sugar-sweetened beverages at grocery stores and supermarkets. The new findings challenge the "food desert" hypothesis, which states that a lack of access to supermarkets and grocery stores in some underserved communities worsens the obesity crisis by restricting people's access to healthy foods. In other words, contrary to popular belief, access to healthy foods in a supermarket does not hinder Americans' consumption of empty calories. The study looked at data from 4,204 adults who reported their daily food intake in two nonconsecutive 24-hour periods in 2011 and 2012. The analysis determined that nearly half (46.3 percent) of U.S. adults consume sugar-sweetened b...