Time-Restricted Eating to Reduce Cardiovascular Risk Among Older Breast Cancer Survivors: A Single-Arm Feasibility Study

Time-restricted eating (TRE) limits energy intake to within a given time window, commonly 8 hours, followed by fasting for 16 hours (16:8 TRE). It is a practical approach that could improve cardiometabolic health,1 but its effects in cancer populations or on cardiovascular disease (CVD) risk have not been studied. We performed a single-arm feasibility study to evaluate adherence, safety (symptoms, fat-free mass loss), and preliminary efficacy of 8 weeks of 16:8 TRE on CVD risk among breast cancer survivors (BCS).