Eating with the clock: trying 8-hour eating windows during cancer treatment

Is this trial a fit for you?

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

Participants with solid tumors undergoing curative surgery and starting adjuvant therapy are randomized to either an 8-hour time-restricted eating window or a 12-plus hour eating window for about six months. Researchers track eating times, meal frequency, and intake with surveys, 3-day records, and continuous glucose monitoring, while offering weekly nutrition coaching. The trial uses sleep time to anchor the eating window and does not prescribe calories or meal counts beyond the window. Outcomes focus on treatment tolerance, metabolic health, and patient-reported well-being. The study is conducted with leading institutions and collaborators to explore a practical dietary approach during cancer care.

Why it matters

Who can join: the full rules

Inclusion Criteria:

* Age ≥18 years (no upper age limit)
* Any sex or gender
* Histologically or cytologically confirmed solid tumor treated with curative-intent surgical resection and planned initiation of systemic adjuvant therapy (chemotherapy, targeted therapy, immunotherapy, and/or radiation per standard of care)
* BMI ≥18.5 kg/m2
* Willing and able to adhere to the assessments, visit schedules, prohibitions, and restrictions

Exclusion Criteria:

* No plan for systemic adjuvant therapy after surgery
* Strictly adhering to a \<10-hour eating window on most days
* Regular overnight shift work (≥1 night shift per week)
* Dependent on parenteral or enteral nutrition
* Pregnant or breastfeeding
* Active second malignancy requiring systemic therapy (exceptions: non-melanoma skin cancers or in situ cervical cancers adequately treated)
* Severe psychiatric, cognitive, or social conditions that would interfere with adherence to study procedures

Where it's running

• Cedars Sinai Medical Center (CSMC)
  Los Angeles, California, United States Recruiting

Study contacts

• Principal investigator: Jane Figueiredo, PhD — Cedars-Sinai Medical Center
• Study coordinator: Jane Figueiredo, PhD
• Email: Jane.Figueiredo@cshs.org
• Phone: (310) 423-2746

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How to take part

1. Review the eligibility criteria above with your treating physician.
2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.