Experiences of a Digital Behavior Change Intervention to Prevent Weight Gain and Promote Risk-Reducing Health Behaviors for Women Aged 18 to 35 Years at Increased Risk of Breast Cancer: Qualitative Interview Study

Rhiannon E Hawkes   ¹ , PhD ;   Mary Pegington   ^{2, 3} , PhD ;   Alan Davies   ⁴ , PhD ;   Julia Mueller   ⁵ , PhD ;   Anthony Howell   ^{2, 3, 6} , MBBS, FRCP ;   D Gareth Evans   ^{3, 6, 7} , MD, FRCP ;   Sacha J Howell   ^{2, 3, 6, 8} , BMBS, FRCP ;   David P French   ¹ , PhD ;   Michelle Harvie   ^{2, 3, 6} , PhD, SRD

¹ Manchester Centre for Health Psychology, School of Health Sciences, University of Manchester, Manchester, United Kingdom

² Division of Cancer Sciences, University of Manchester, Manchester, United Kingdom

³ The Prevent Breast Cancer Research Unit, The Nightingale Centre, Manchester University NHS Foundation Trust, Manchester, United Kingdom

⁴ Division of Informatics, Imaging and Data Sciences, University of Manchester, Manchester, United Kingdom

⁵ Medical Research Council Epidemiology Unit, University of Cambridge, Cambridge, United Kingdom

⁶ Manchester Breast Centre, Oglesby Cancer Research Centre, The Christie NHS Foundation Trust, University of Manchester, Manchester, United Kingdom

⁷ Genomic Medicine, Division of Evolution, Infection and Genomic Sciences, University of Manchester, St Mary’s Hospital, Manchester University NHS Foundation Trust, Manchester, United Kingdom

⁸ Department of Medical Oncology, The Christie NHS Foundation Trust, Manchester, United Kingdom