Time-restricted Eating in Cancer Survivorship: A Single-arm Feasibility Pilot Study

In this study, the feasibility of delivering a time-restricted eating (TRE) intervention among fatigued cancer survivors will be assessed. The participants will be asked to eat ad libitum only within a self-selected 10-h window each day for 14 days. The primary aim is to assess the adherence of the participants to the 10-h TRE intervention.

Inclusion criteria

(Participants must...)

• Have completed adjuvant chemotherapy, surgery, and/or radiation for cancer at least 4 months and not more than 5 years prior to enrolling,
• Have a baseline level of fatigue, as determined by reporting a score of 3 or higher for the question, "In the last week, how bad was your worst fatigue on a scale from 0-10?"
• Be able to speak English,
• Be at least 18 years old,
• Be willing and able to adhere to study procedures, and
• Be able to provide written informed consent.

Exclusion criteria

(Participants must not...):

• Already eat all their food within a window that is 10 h or shorter most (6/7) days of the week,
• Be underweight, as defined as a body mass index ≤20.0 kg/m2.
• Not have surgery planned in the next month,
• Not have any contraindications to the proposed nutrition intervention as identified by
• their medical provider, their designee, or the study team (e.g., type 1 diabetes, risk for hypoglycemia, medication requirements, pregnancy, breastfeeding, recent history of an eating disorder),
• Not be taking insulin, or
• Be on enteral or parenteral nutrition.