tDCS and Cognitive Training for Obesity in Veterans

Inclusion Criteria: * Veteran enrolled in a MOVE! Weight Management Program (group or individual) at the Minneapolis VA Health Care System * Obese (BMI\>30 or BMI\>27 plus at least one weight-related comorbidity) * Able to understand English, self-consent and follow study-related procedures * Willing to use a reliable form of birth control if they are of females of child-bearing potential Exclusion Criteria: * History of any of the following: seizures, severe or moderate head injury, head surgery, significant neurological disorder (significance based on Principal Investigator's judgment) * Frequent severe headaches * History of scalp conditions such as eczema or seborrheic dermatitis * Metal in head (other than in mouth) including shrapnel/surgical clips/welding fragments * Implanted medical devices (including pumps and cardiac pacemakers) * Pregnancy * Acute substance dependence or withdrawal that would affect ability to complete cognitive training * Moderately severe to severe depression (as identified on PHQ-9 scale during baseline screening) * Other psychological or medical disorders requiring inpatient treatment (as identified during chart review) * Presence of a known metabolic or hormonal disorder (such as Cushing's, untreated thyroid dysfunction, or uncontrolled diabetes mellitus defined as a hemoglobin A1c \> 8.0), or significant edema/volume overload - all of which would affect weight * Uncontrolled hypothyroidism that would affect weight