Effects of Negative Affect in Individuals With Binge Eating Episodes
Bulimia Nervosa, Binge-Eating Disorder, Obesity
About this trial
This is an interventional basic science trial for Bulimia Nervosa focused on measuring fMRI, Reward, Food Choices, Negative Affect
Eligibility Criteria
Inclusion Criteria:
Healthy Controls
- Age 18-55 years old
- Healthy body weight between 90 and 110 % average body weight since puberty.
- Regular monthly menstrual cycle (if applicable)
- Edinburgh Handedness Inventory Revised (EHI-R) LQ* score > +200
Obese
- Age 18-55 years old
- Current body mass index (BMI) > 30 kg/m2.
- Stable food intake regimen in previous 4 weeks.
- Edinburgh Handedness Inventory Revised (EHI-R) LQ* score > +200
- Obese for at least one year
Binge Eating Disorder
- Age 18-55 years old
- Edinburgh Handedness Inventory Revised (EHI-R) LQ* score > +200
DSM 5 diagnosis of Binge Eating Disorder A. Recurrent episodes of binge eating B. Binge eating episodes are associated with three (or more) of the following
- Eating much more rapidly than normal.
- Eating until feeling uncomfortably full.
- Eating large amounts of food when not feeling physically hungry.
- Eating alone because of embarrassment.
- Feeling disgusted with oneself, depressed, or very guilty after overeating. C. Marked distress regarding binge eating is present. D. At least once a week for 3 months. E. The binge eating is not associated with the recurrent use of inappropriate compensatory behavior.
Bulimia Nervosa
- Age 18-55 years old
- Edinburgh Handedness Inventory Revised (EHI-R) LQ* score > +200
- DSM 5 diagnosis of Bulimia Nervosa A. Recurrent episodes of binge eating Eating, in a discrete period of time, an amount of food that is definitely larger than most people would eat during a similar period of time and under similar circumstances.
A sense of lack of control over eating during the episode. B. Recurrent inappropriate compensatory behavior in order to prevent weight gain, such as self-induced vomiting; misuse of laxatives, diuretics, or other medications; fasting; or excessive exercise.
C. At least once a week for 3 months. D. Self-evaluation is unduly influenced by body shape and weight.
Exclusion Criteria:
Healthy Controls
- Current pregnancy or breast feeding within last 3 months
- First degree relative with current or past eating disorder
- Current Medications other than BCP or IUD
- Past or present Axis I psychiatric disorder including substance or alcohol use disorder as determined through SCID-5 clinical interview
- First degree relative with an eating disorder
- Major Medical illness
- Recent history of suspected substance abuse or a lifetime history of psychostimulant abuse and/or dependence
- Metal implants or braces
Obese
- Current pregnancy or breast feeding within last 3 months
- First degree relative with current or past eating disorder
- Current or previous eating disorder diagnosis
- Current Medications other than BCP or IUD
- Past or present Axis I psychiatric disorder including substance or alcohol use disorder as determined through SCID-5 clinical interview
- Major Medical illness
- Recent history of suspected substance abuse or a lifetime history of psychostimulant abuse and/or dependence
- Metal implants or braces
Binge Eating Disorder
- Pregnancy or breast feeding within last 3 months
- Lifetime history of bipolar disorder or psychosis
- Use of a psychostimulant within the prior 6 months
- Recent history of substance abuse or dependence (except for alcohol and cannabis use)
- Major Medical illness
- Metal implants or braces
Bulimia Nervosa
- Pregnancy or breast feeding within last 3 months
- Lifetime history of bipolar disorder or psychosis
- Use of a psychostimulant within the prior 6 months
- Recent history of substance abuse or dependence (except for alcohol and cannabis use)
- Major Medical illness
- Metal implants or braces
Sites / Locations
- University of California at San DiegoRecruiting
Arms of the Study
Arm 1
Experimental
Behavioral
Negative Affect Task