Time Restricted Eating, Eating Behaviors, and Cardiometabolic Risk in Emerging Adult Women

The purpose of this study is to assess how time restricted eating interventions impact eating behaviors, diet quality, and body composition in women ages 20-29 years. Participants will be asked to limit all food and drinks (except water and some non-caloric beverages) to a 10-hour period during the day for four weeks. Participants 1-36 will follow their usual eating and activity patterns for one week before starting, and follow whatever eating pattern they want for 4 weeks after finishing. Participants 37-51 will follow their usual eating and activity patterns for one week before starting, and will not complete a follow up period.

Inclusion Criteria: * Able to speak and read English * Own a smartphone * BMI ≥ 20 kg/m2 * Usual eating window ≥ 12 hours with the last eating occasion after 8pm on the majority of days * Have at least a moderate baseline level of dietary restraint Exclusion Criteria: * Shift workers * Being pregnant, nursing, or planning to become pregnant in the next 6 months * Having a past or current eating disorder diagnosis * Having a chronic medical condition (including diabetes, heart, kidney, or thyroid disease) or a condition that requires therapeutic diet or specified meal timing