The RolE of Prolonged Nightly faSTing to Improve Sleep and cOgnition in bREast Cancer Survivors

The purpose of this innovative, remotely-delivered pilot randomized controlled trial (RCT) is to explore the use of an 8-week prolonged nightly fasting (PNF) intervention, as compared to a Health Education-Only (HED-Only) control condition, among ethnically and racially diverse (≥50% Black, Hispanic, and/or Native American) breast cancer survivors (BCSs) with cancer-related cognitive impairment (CRCI) to examine changes in cognitive function, sleep, insomnia and health-related quality of life (i.e., mental and physical). Additionally, intervention feasibility will be assessed among the PNF participants. All participants will receive health education (HED) throughout. BCSs living with CRCI (N=60) will be recruited nationwide and randomized 1:1 into the PNF or HED-Only groups. Linear mixed models will be used to compare outcome changes in the PNF group compared to HED-Only group (Aims 1-3); descriptive and qualitative analyses will be used in the Exploratory Aim.