Lifestyle Program (Scalable Nutrition and Physical Activity) for the Improvement of Nutrition and Physical Activity in Stage 0-III Breast Cancer Survivors

Inclusion Criteria:

Previous diagnosis of stage 0-III breast cancer in the past 10 years at the time of enrollment
No evidence of recurrent or metastatic disease
No uncontrolled diabetes mellitus defined as glycosylated hemoglobin (Hgb A1C) > 8%
No uncontrolled hypertension per Seattle Cancer Care Alliance (SCCA) standard of care
At least 60 days post final chemotherapy, biologic therapy, or radiation therapy and/or surgery. Current use of endocrine therapy is permitted (e.g., tamoxifen and aromatase inhibitors)
Access to phone for study contacts
Access to smartphone, tablet, or computer and internet to attend online session(s) and receive study electronic eHealth communication (text messages and access to website)
Willing and able to attend the online session(s) on Saturdays, or via online accessed videos, for up to 12 sessions in 6 months
Successfully complete all run-in activities, including at-home and over the phone assessments, 7 days of collecting physical activity data via accelerometer, and providing blood and stool sample
Willing and able to complete all study activities for 6 months after randomization
Participants must consume < 5 servings of fruits and vegetables per day and/or engage in < 150 minutes per week of moderate to vigorous physical activity, as assessed by brief questionnaires
Participants must have an Eastern Cooperative Oncology Group (ECOG) Scale of performance status score of 0 or 1 for performance status.
Signed physician approval for diet change and physical activity
Able to understand and willing to sign written informed electronic (e) consent in English

Exclusion Criteria:

Participants must not be active smokers within the past 30 days.
Women must not be pregnant at time of enrollment