FIGURE 1.

Study designs. In both study A and study B, participants completed each of 3 diet periods, during which they consumed standardized solid foods ad libitum, as well as 4 mandatory servings per day of beverages sweetened with fructose, glucose, or aspartame (study A) or fructose, glucose, or HFCS (study B). The order in which the beverages were consumed was randomized, and the intervention periods were separated by washout periods of 20 d each. All foods and beverages were provided, and ad libitum energy intake was assessed by weighing all foods that were not consumed and subtracting those calories from the number of calories in the foods provided. HFCS, high-fructose corn syrup.