Behavioral Weight Loss for Cancer Survivors in Maryland: A Trial With Adaptive Interventions

Inclusion Criteria: * Women and men ages 18 or older * Able to complete all study requirements in English * Have been previously diagnosed with a malignant solid tumor, completed the required surgical, and/or chemotherapy and/or radiation curative intent therapy at least three months prior to enrollment, and have an anticipated treatment-free life span of 12 months or longer. Chemoprophylaxis with tamoxifen or aromatase inhibitors for breast cancer in women and anti- luteinizing hormone-releasing hormone (LHRH) therapy for prostate cancer in men will be permitted. * Have a BMI ≥ 27 kg/m2 (BMI ≥ 25 kg/m2 for Asians) and weight ≤ 400 lbs. * Have an email address for regular personal use * Have a smartphone for personal use, and are willing to use the phone to read emails and text messages, and use an app * Have adequate data plan and cell service to support daily use of weight loss app, receive text messages and to support coaching calls * Are willing to record weekly weights * Are willing to use a tracking app to log food and exercise daily * Are willing to complete coaching calls as planned * Are willing to prioritize weight loss efforts by making dietary changes and increasing physical activity Exclusion Criteria: * Received any chemotherapy (unless anti-hormonal therapy) and/or radiation three months or less prior to the proposed program date * Women who are breastfeeding, pregnant, or planning pregnancy within the next year * self-identification of uncontrolled concurre…