PRehabilitation Intervention to Modify Eating for Breast Cancer Patients (PRIME)

This single-arm pilot study evaluates the feasibility and acceptability of a 4-week Mediterranean diet-based feeding intervention as nutritional prehabilitation for newly diagnosed, treatment-naïve breast cancer patients prior to surgery. All meals are provided to participants. Secondary aims include assessing changes in body composition, metabolic biomarkers, inflammation, gut microbiome composition, patient-reported outcomes, and clinician-reported surgical recovery metrics.