The study will include a combination of in-person, at-home, and virtual activities over the course of ~22 days (contingent on scheduling, this duration may vary and particularly between in-person visits #1 and #2). Participants complete three in-lab visits, each followed by a week of remote data tasks (e.g., remote food photography, EMA, continuous glucose monitoring, and physical activity and sleep tracking (Fitbit).
During in-lab visit #1, participants will complete questionnaires, behavioral tasks, and interviews, and will have body composition measurements taken (height, weight, Inbody scan). Participants will complete the remote tasks for the following week while eating their typical diet (i.e., baseline period).
During in-lab visit #2, participants will complete questionnaires, interviews, and body composition measurements (height, weight, Inbody scan). Participants are randomly assigned to a high or low UP food condition and will be provided with food and beverages consistent with their condition, which they are required to exclusively consume during week 2 of remote data collection (i.e., dietary intervention period).
During in-lab visit #3, participants will complete questionnaires, behavioral tasks, body composition measurements (height, weight, InBody scan), and an fMRI scan. All participants are provided with dietary instructions for a low UP diet to follow on their own during week 3 of remote data collection (i.e., dietary adherence period).
At the end of the third week of remote data collection, participants are asked to complete additional questionnaires, provide information about their current diet, and complete a remote interview about their experience with the study. Participants are contacted 1- and 3-months later to complete a short follow-up survey and provide information about their current diet.
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