Mila Blooms Intervention Study

Behavioral intervention will be administered to 30 adolescent childhood cancer survivors \& their parents (3 blocks of 10 survivor-parent(s) groups) who serve as their own controls. The intervention phase begins at Week 9 (immediately following the 8-week control phase) and runs for 9 weeks (Weeks 9 - 17). Adolescents are assigned a smartphone installed with the Mila Blooms app to use for the first 8 weeks (Weeks 9 - 16) of the intervention. The app integrates (1) tools for tracking health behaviors (e.g., diet, physical activity, etc.); (2) an avatar system to provide virtual rewards, and (3) a social network of users for support. As part of the intervention, adolescents will also receive weekly coaching phone calls from study staff to discuss areas of concern and to encourage goal-setting \& participation. During the 9th week (Week 17), participants complete one final survey \& accelerometer wear.