MindVybe tVNS/APS for Wellbeing in Breast Cancer Survivors

This study tests whether a gentle, non-invasive device called mindvybe can help improve feelings of wellbeing in people who have had breast cancer. Mindvybe delivers mild electrical stimulation near the vagus nerve (on the ears and neck) and to specific points on the earlobes. About 60 adults (ages 18-75) who finished breast cancer treatment within the past five years and still have ongoing wellbeing problems (such as low mood, stress, fatigue, or sleep issues) will take part. Participants will receive five 50-minute mindvybe sessions over one week. Researchers will measure changes in wellbeing, distress, fatigue, sleep, and heart-rate patterns before, during, and for up to 12 weeks after the sessions. The study is open-label (everyone receives the same treatment) and is considered low-risk.