Loss-of-control Eating, Obesity/Overweight
Conditions
Brief summary
This study will compare the effectiveness of behavioral and pharmacologic treatments, alone and in combination, for the treatment of loss-of-control eating and weight following bariatric surgery. This is an acute treatment comparing behavioral weight loss alone or in combination with combination naltrexone/bupropion medication.
Detailed description
Participants who provide informed consent and are determined to be eligible will then participate in the study. A total of 160 patients with obesity and regular LOC-eating following MBS will be randomly assigned (double-blind) in a balanced factorial (2 X 2) design, to one of four 16-week interventions: BWL+NB, BWL+Placebo, NB, or Placebo. The randomization will be in equal proportions but stratified by surgery type.
Interventions
DRUGNaltrexone and Bupropion medication
NB medication will be taken daily in pill form.
BEHAVIORALBehavioral Weight Loss
Behavioral Weight Loss (BWL) counseling includes weekly sessions.
OTHERPlacebo
Placebo will be inactive and taken daily in pill form.
Sponsors
Yale University
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No
Inclusion criteria
* Be in the age range ≥18 years of age and ≤70 years of age. * Have a BMI ≥30 (or BMI ≥27 with a medical comorbidity) and ≤50 * Have had laparoscopic Roux-en-Y gastric bypass or sleeve gastrectomy * Approximately six months post-surgery * Experience regular loss-of-control eating (defined as at least once weekly over the past 28 days) * Be an otherwise healthy subject without uncontrolled medical problems, as determined by the study physician and medical co-investigators (physical examination, laboratory studies). * Read, comprehend, and write English at a sufficient level to complete study-related materials. * Provide a signed and dated written informed consent prior to study participation. Be available for participation in the study for up to 19 months (7-month treatment plus 12-month follow up).
Exclusion criteria
* Has a predisposition to seizures (e.g., subject with a history or evidence of seizure disorder, febrile seizures during childhood, brain tumor, cerebrovascular disease, or significant head trauma; has a family history of idiopathic seizure disorder or is currently being treated with medications or treatment regimens that lower seizure threshold). * Has a history of anorexia nervosa or history of bulimia nervosa. * Is currently taking a medication that is a contraindication to NB medication (e.g., MAOI, opiates). * Is currently using other medications for weight loss. * Has a history of allergy or sensitivity to bupropion or naltrexone. * Has a co-existing psychiatric condition that requires hospitalization or more intensive treatment (such as bipolar mood disorders, psychotic illnesses, or severe depression) * Has untreated hypertension with a seated systolic blood pressure \> 160 mmHg, diastolic blood pressure \> 100 mmHg, or heart rate \> 100 beats/minute. * Has a history of congenital heart disease, cardiovascular disease, cardiac arrhythmias requiring medication, or a history of cerebrovascular pathology including stroke. * Has current uncontrolled hypertension. * Has current uncontrolled Type I or Type II diabetes mellitus. * Has untreated hypothyroidism with a TSH \> 1.5 times the upper limit of normal for the test laboratory with repeat value that also exceeds this limit. * Has gallbladder disease. * Has a history of severe renal, hepatic, neurological, chronic pulmonary disease, or any other unstable medical disorder. * Has a recent history of drug or alcohol dependence (since having bariatric surgery). * Is currently in active treatment for eating or weight loss. * Is currently participating in another clinical study in which the subject is or will be exposed to an investigational or a non-investigational drug or device. * Is breast-feeding or is pregnant or is not using a reliable form of birth control. * Reports active suicidal or homicidal ideation.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Loss-of-control Eating Frequency | Post-treatment (4 months) | Loss-of-control eating frequency is a continuous variable of loss-of-control eating episodes assessed using the Eating Disorder Examination interview; Loss-of-control eating frequency will be based on the past 28 days and defined as loss-of-control eating episodes per month. |
| Body Mass Index | Post-treatment (4 months) | BMI is calculated using measured height and weight |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Loss-of-control Eating Remission | Post-treatment (4 months) | Categorical: zero episodes/28 days |
| Weight loss | Post-treatment (4 months) | Categorical: 5% weight loss |
| Eating Disorder Psychopathology | Post-treatment (4 months) | Eating-disorder psychopathology is a continuous variable as assessed by the global score of the Eating Disorder Examination/Eating Disorder Examination-Questionnaire. Scores range from 0-6 (0=no eating-disorder psychopathology; 6=severe eating-disorder psychopathology). |
| Depressive Symptoms | Post-treatment (4 months) | Depressive symptoms is a continuous variable of depressive symptomatology as assessed by the self-report measure, the Patient Health Questionnaire - 9. Scores range from 0-27 (0=no depressive symptoms, 27=greater depressive symptoms). |
Countries
United States
Outcome results
None listed