Background: Obesity and weight gain are significant concerns for breast cancer survivors. Obesity at diagnosis of breast cancer is an established negative prognostic factor and the Nurses’ Health Study suggest that post-diagnosis weight gain may increase risk for recurrence. Up to 96 percent of women gain weight during treatment and once a woman has been diagnosed with breast cancer, she is at increased risk for other cancers, diabetes and cardiovascular disease. Several studies report an inverse relationship between weight gain and disease free survival. Continued efforts to identify appropriate weight management interventions aimed at promoting overall health and long term survivorship are needed. In this study, we will examine whether adding weight loss acupuncture to a nutrition education program for weight loss could improve short and long term weight loss among breast cancer survivors post treatment with chemotherapy. Vtrim is an online, evidence based, 12 week behavior modification program for weight management and has been used in breast cancer survivors, with a recent study showing weight change and safety in this population. Meta-analyses have suggested that acupuncture may be helpful for weight loss in obese women not diagnosed with breast cancer and without the common side effects found in alternative medicinal options. Methods: We plan to enroll obese women who have been diagnosed and treated for breast cancer in a twelve week weight loss program. The participants will be randomized to two groups: weight loss acupuncture plus nutrition intervention or nutrition intervention alone. Women in the acupuncture group will receive weekly body and/or auricular acupuncture once a week at the Pain Management and Integrative Medicine Clinic at Mount Sinai Medical Center, in addition to attending the online group-based nutritional education sessions in which all study participants will partake. All study participants’ weight loss will be assessed at the end of twelve weeks, with follow-up at twenty-four weeks, then every 3 months for the first year, then every 6 months until year two, to evaluate weight loss maintenance.