Novel and Scalable Internet Supplemented Weight Loss Treatment in Primary Care

Inclusion Criteria: * BMI 25-55 * Daily access to internet and phone * Recruited through local primary care offices. * Age 18-65 Exclusion Criteria: * Co-existing physical and/or psychiatric conditions that require more significant treatment (e.g., bipolar disorder, psychotic illnesses), and/or require more intensive treatment or hospitalization (e.g., suicidality, severe mood disorders) * Meets criteria for current substance abuse/dependence * Currently receiving psychiatric, psychological, behavioral, or pharmacologic treatment that is known to affect weight or eating * Pregnant, breastfeeding, or plans to become pregnant during the treatment period * Cardiac disease, including ischemic heart disease, congestive heart failure, conduction abnormalities, or a history of heart attack * Serious neurologic illnesses (e.g., seizure history) or medical illnesses (e.g., impaired hepatic or renal function) * Uncontrolled diabetes, thyroid conditions, or hypertension