Healthy Living After Cancer: Weight Management Pilot Study

Inclusion Criteria:

* Written informed consent prior to any study-related procedures
* History of any malignancy
* Completed with all adjuvant surgery, chemotherapy and/or radiation at least one month prior to study enrollment (patients receiving ongoing hormonal or biologic therapy are eligible to participate)
* BMI \>25kg/m2
* ECOG performance status of 0 or 1
* At least 18 years old
* Physically able to exercise and physician consent to start a weight loss program
* Willingness to be randomized
* English speaking and able to read English

Exclusion Criteria:

* Self-reported inability to walk 2 blocks (at any pace)
* Serious digestive and/or absorptive problems, including inflammatory bowel disease and chronic diarrhea that preclude adherence to the study diet.
* Bariatric surgery within the last year
* Cardiovascular, respiratory or musculoskeletal disease or joint problems that preclude moderate physical activity. Examples would include unstable angina, recent myocardial infarction, oxygen-dependent pulmonary disease, and osteoarthritis requiring imminent joint replacement. Moderate arthritis that does not preclude physical activity is not a reason for ineligibility.
* Psychiatric disorders or conditions that would preclude participation in the study intervention (e.g. untreated major depression or psychosis, substance abuse, severe personality disorder).