Examining Neurobiological Mechanisms Underlying the Therapeutic Effect of the Ketogenic Diet in Bipolar Disorder (BD)
Purpose
The investigators aim to examine the effect of the ketogenic diet on brain activity, metabolism, and emotions in adults with Bipolar Disorder (BD).
Condition
- Bipolar Disorder
Eligibility
- Eligible Ages
- Between 18 Years and 30 Years
- Eligible Genders
- All
- Accepts Healthy Volunteers
- Yes
Inclusion Criteria
All participants: *18-30 years of age BD hypomanic group (n=30): - Meeting sex proportion: 50% female - Meeting diagnosis proportion: 50:50% Bipolar I: Bipolar II (BDI:II) (Diagnostic and Statistical Manual of Mental Disorders 5; DSM-5) - Young Mania Rating Scale score(YMRS)>10 - Score <8 Hamilton Rating Scale for Depression(HRSD) - BD medications will be allowed as in our previous studies: any combination of atypical antipsychotics, lithium, antidepressants, anxiolytics (common in BD) BD euthymic group (n=30): - Meeting sex proportion: 50% female - Meeting diagnosis proportion: 50:50% BDI:II (DSM-5) - Score <8 on YMRS - Score <8 on Hamilton Depression Rating Scale (HRSD) - BD medications will be allowed as in our previous studies: any combination of atypical antipsychotics, lithium, antidepressants, anxiolytics (common in BD) Healthy Control (HC) Group (n=30): - Sex matched with BD groups - No psychiatric history
Exclusion Criteria
All participants: - Not between 18-30 years of age - History of head injury, neurological, pervasive developmental disorder (e.g. autism), systemic medical disease and treatment (medical records, participant report) - Mini-Mental State Examination score (cognitive state) <24 - Premorbid National Adult Reading Test Intelligent Quotient (NAART IQ) estimate<85 - Visual disturbance: <20/40 Snellen visual acuity - Left/mixed handedness (Annett criteria) - History of alcohol/substance use disorder (SUD; all substances, including nicotine), and/or illicit substance use (except cannabis) over the last 6 months (SCID-5). Note: lifetime/present cannabis use (at non-abuse (<3 times in the past month) and non SUD levels) will be allowed, given its common usage in BD and young adults. Cannabis SUD over the last 6 months will not be allowed. Urine tests on scan days will exclude current illicit substance use (except cannabis). Salivary alcohol tests on scan days will exclude intoxicated individuals - MRI exclusion: metallic objects, e.g., surgical implants; claustrophobia; positive pregnancy test for females or self-report pregnancy - Unable to understand English - Conditions related to the pancreas, liver, thyroid or gallbladder. - Does not have a smartphone with a) iPhone operating system (iOS) version 12.0 or above, or b) Android version 8 and later to use with the Keto-Mojo app BD hypomanic group: - Must be meeting sex proportions: not 50% female - Must be meeting diagnosis proportions: not 50:50% BDI:II (DSM-5) - Diagnosis of BD in a depressive, manic, or euthymic episode - Young Mania Rating Scale score(YMRS)10 or lower - Score 8 or higher on Hamilton Rating Scale for Depression(HRSD) - Using psychotropic medications other than those allowed in inclusion criteria - Head circumference larger than about 58 cm (size restriction of 7Tesla (7T) scanner) BD euthymic group: - Not meeting sex proportion: not 50% female - Not meeting diagnosis proportion: not 50:50% BDI:II - Diagnosis of BD in a depressive, hypomanic, or manic episode - Score 8 or higher on YMRS - Score 8 or higher on HRSD - Using psychotropic medications other than those allowed in inclusion criteria Healthy Control (HC) Group - Not sex-matched with BD groups - Has psychiatric history
Study Design
- Phase
- N/A
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Crossover Assignment
- Primary Purpose
- Basic Science
- Masking
- None (Open Label)
Arm Groups
| Arm | Description | Assigned Intervention |
|---|---|---|
|
Experimental 1st phase Non-ketogenic Diet / 2nd phase Ketogenic Diet |
Participants with Bipolar Disorder will consume a non-ketogenic diet for the first phase of the study and then a ketogenic diet for the second phase of the study |
|
|
Experimental 1st phase Ketogenic Diet / 2nd phase Non-ketogenic Diet |
Participants with Bipolar Disorder will consume a ketogenic diet for the first phase of the study and then a non-ketogenic diet for the second phase of the study |
|
|
Other No diet |
Participants without Bipolar Disorder will not participate in the diet phases of the study |
|
Recruiting Locations
More Details
- Status
- Recruiting
- Sponsor
- University of Pittsburgh
Detailed Description
The investigators hypothesize that a ketogenic diet will enhance levels of the ketone body β-Hydroxybutyrate (beta OHB), resulting in reduced mania/hypomania severity and predisposition to mania/hypomania in individuals with BD. To test this hypothesis in depth, the investigators will use a novel, multidisciplinary mechanistic study using multimodal neuroimaging, peripheral markers of mitochondrial metabolism, and participant-derived induced pluripotent stem cell (iPSC)-derived organoids.
