Mean intake ± SEM of Cheetos® (Top) or Lab chow (Bottom) in kcal consumed during daily 20-min sessions by rats with a history of low fat (LF) or high fat (HF) diet during pre and periadolescence or adulthood. Access to Cheetos® or lab chow was counterbalanced on an ABBA schedule across 20 days of training (Phase 2). *Significantly different from all other groups (p < .05). #Significantly different from all HF groups (p < .05). +Significantly different from all LF groups (p < .05).