📑

Scientific Citations

Complete research citations from peer-reviewed journals referenced in “Brain Energy” by Dr. Christopher Palmer.

The brain energy theory is built on decades of research from thousands of scientists worldwide. Below are key citations from peer-reviewed journals that support the metabolic approach to mental health. Click on DOI links to access the original papers.

🧠Ketogenic Diet & Schizophrenia

Palmer CM, Gilbert-Jaramillo J, Westman EC (2019)

The Ketogenic Diet and Remission of Psychotic Symptoms in Schizophrenia: Two Case Studies

Schizophrenia Research, 208, 439-440
KEY FINDING:

First published peer-reviewed case studies documenting full remission of psychotic symptoms in patients with schizophrenia using the ketogenic diet.

Ketogenic Diet & Epilepsy

Martin-McGill KJ, Bresnahan R, Levy RG, Cooper PN (2020)

Ketogenic Diets for Drug-Resistant Epilepsy

Cochrane Database of Systematic Reviews, 6(6), CD001903
KEY FINDING:

Children with treatment-resistant epilepsy on ketogenic diets are 3x more likely to achieve seizure freedom and 6x more likely to have 50%+ reduction in seizures.

Bough KJ, Wetherington J, Hassel B, et al. (2006)

Mitochondrial Biogenesis in the Anticonvulsant Mechanism of the Ketogenic Diet

Annals of Neurology, 60(2), 223-235
KEY FINDING:

The ketogenic diet induces mitochondrial biogenesis (creation of new mitochondria), which is part of how it prevents seizures.

Rho JM (2017)

How Does the Ketogenic Diet Induce Anti-Seizure Effects?

Neuroscience Letters, 637, 4-10
KEY FINDING:

Review of the multiple mechanisms by which the ketogenic diet prevents seizures, including effects on mitochondria.

🧓Ketogenic Diet & Alzheimer's

Phillips MCL, Deprez LM, Mortimer GMN, et al. (2021)

Randomized Crossover Trial of a Modified Ketogenic Diet in Alzheimer's Disease

Alzheimer's Research & Therapy, 13(1), 51
KEY FINDING:

Patients on the ketogenic diet showed improvement in daily function and quality of life compared to those on a low-fat diet.

🍷Ketogenic Diet & Alcohol

Wiers CE, Vendruscolo LF, van der Veen JW, et al. (2021)

Ketogenic Diet Reduces Alcohol Withdrawal Symptoms in Humans and Alcohol Intake in Rodents

Science Advances, 7(15), eabf6780
KEY FINDING:

The ketogenic diet reduced alcohol withdrawal symptoms in humans and reduced alcohol intake in rodents.

🔗The P-Factor: All Disorders Connected

Plana-Ripoll O, Pedersen CB, Holtz Y, et al. (2019)

Exploring Comorbidity Within Mental Disorders Among a Danish National Population

JAMA Psychiatry, 76(3), 259-270
KEY FINDING:

Analysis of almost 6 million people over 17 years found having ANY mental disorder dramatically increases chances of developing ANOTHER mental disorder, with odds ratios of 2-30x across ALL disorders in ALL directions.

Caspi A, Moffitt TE (2018)

All for One and One for All: Mental Disorders in One Dimension

American Journal of Psychiatry, 175(9), 831-844
KEY FINDING:

Review finding strong correlations among ALL mental disorders. Not a single risk factor conferred risk for only one disorder - each risk factor increased risk for MANY disorders.

Pettersson E, Larsson H, Lichtenstein P (2016)

Common Psychiatric Disorders Share the Same Genetic Origin: A Multivariate Sibling Study of the Swedish Population

Molecular Psychiatry, 21, 717-721
KEY FINDING:

Genetic study showing common psychiatric disorders share genetic origins.

🔋Mitochondrial Dysfunction in Mental Illness

Wallace DC (2017)

A Mitochondrial Etiology of Neuropsychiatric Disorders

JAMA Psychiatry, 74(9), 863-864
KEY FINDING:

Editorial from the leading mitochondrial researcher arguing that mitochondrial dysfunction is a cause of neuropsychiatric disorders.

Ben-Shachar D, Karry R (2008)

Neuroanatomical Pattern of Mitochondrial Complex I Pathology Varies Between Schizophrenia, Bipolar Disorder and Major Depression

PLoS One, 3(11), e3676
KEY FINDING:

Found mitochondrial complex I pathology in schizophrenia, bipolar disorder, and major depression, with different patterns in different brain regions.

Scaini G, Rezin GT, Carvalho AF, Streck EL, Berk M, Quevedo J (2016)

Mitochondrial Dysfunction in Bipolar Disorder: Evidence, Pathophysiology and Translational Implications

Neuroscience & Biobehavioral Reviews, 68, 694-713
KEY FINDING:

Comprehensive review of evidence for mitochondrial dysfunction in bipolar disorder.

Morris G, Walder K, McGee SL, et al. (2017)

A Model of the Mitochondrial Basis of Bipolar Disorder

Neuroscience & Biobehavioral Reviews, 74, 1-20
KEY FINDING:

Proposes a comprehensive model for how mitochondrial dysfunction causes bipolar disorder.

Giménez-Palomo A, Dodd S, Anmella G, et al. (2021)

The Role of Mitochondria in Mood Disorders: From Physiology to Pathophysiology and to Treatment

Frontiers in Psychiatry, 12, 546801
KEY FINDING:

Review of how mitochondria contribute to mood disorders and potential treatments.

Hyperexcitability & Mental Disorders

Mertens J, et al. (2015)

Differential Responses to Lithium in Hyperexcitable Neurons from Patients with Bipolar Disorder

Nature, 527(7576), 95-99
KEY FINDING:

Neurons from bipolar patients showed hyperexcitability and mitochondrial abnormalities. Lithium reduced the hyperexcitability.

Cheng A, Wang J, Ghena N, et al. (2020)

SIRT3 Haploinsufficiency Aggravates Loss of GABAergic Interneurons and Neuronal Network Hyperexcitability in an Alzheimer's Disease Model

Journal of Neuroscience, 40(3), 694-709
KEY FINDING:

Deletion of sirtuin 3 (essential to mitochondrial health) in mice caused mitochondrial dysfunction, hyperexcitability, and seizures.

Rosenkranz JA, Venheim ER, Padival M (2010)

Chronic Stress Causes Amygdala Hyperexcitability in Rodents

Biological Psychiatry, 67(12), 1128-1136
KEY FINDING:

Chronic stress causes hyperexcitability in the amygdala, linking stress to anxiety and PTSD symptoms.

😔Depression & Mitochondria

Gebara E, Zanoletti O, Ghosal S, et al. (2021)

Mitofusin-2 in the Nucleus Accumbens Regulates Anxiety and Depression-like Behaviors Through Mitochondrial and Neuronal Actions

Biological Psychiatry, 89(11), 1033-1044
KEY FINDING:

Rats with anxiety/depression had fewer mitochondria and lower MFN2 levels. Increasing MFN2 levels STOPPED anxiety/depression behaviors.

Nasca C, Bigio B, Lee FS, et al. (2018)

Acetyl-L-Carnitine Deficiency in Patients with Major Depressive Disorder

Proceedings of the National Academy of Sciences, 115(34), 8627-8632
KEY FINDING:

Found deficiency of acetyl-L-carnitine (essential for mitochondrial function) in patients with major depression.

Allen J, Romay-Tallon R, Brymer KJ, Caruncho HJ, Kalynchuk LE (2018)

Mitochondria and Mood: Mitochondrial Dysfunction as a Key Player in the Manifestation of Depression

Frontiers in Neuroscience, 12, 386
KEY FINDING:

Review of how mitochondrial dysfunction contributes to depression.

🥗Diet & Depression

Jacka FN, O'Neil A, Opie R, et al. (2017)

A Randomised Controlled Trial of Dietary Improvement for Adults with Major Depression (the 'SMILES' Trial)

BMC Medicine, 15(1), 23
KEY FINDING:

67 people with major depression randomized to Mediterranean diet or social support. After 12 weeks, 32% of diet group achieved remission vs only 8% in control group.

Psaltopoulou T, Sergentanis TN, Panagiotakos DB, Sergentanis IN, Kosti R, Scarmeas N (2013)

Mediterranean Diet, Stroke, Cognitive Impairment, and Depression: A Meta-analysis

Annals of Neurology, 74(4), 580-591
KEY FINDING:

Meta-analysis showing Mediterranean diet is associated with reduced risk of depression, stroke, and cognitive impairment.

Intermittent Fasting & Brain

Liu Y, Cheng A, Li YJ, et al. (2019)

SIRT3 Mediates Hippocampal Synaptic Adaptations to Intermittent Fasting and Ameliorates Deficits in APP Mutant Mice

Nature Communications, 10(1), 1886
KEY FINDING:

Improvements in mood and cognition from intermittent fasting were driven by sirtuin 3 (a mitochondrial protein). When sirtuin 3 was removed, ALL benefits were lost.

Mattson M, Moehl K, Ghena N, et al. (2018)

Intermittent Metabolic Switching, Neuroplasticity and Brain Health

Nature Reviews Neuroscience, 19(2), 81-94
KEY FINDING:

Review of how intermittent fasting affects brain health through metabolic switching.

💔Mental Illness & Early Death

Plana-Ripoll O, et al. (2019)

A Comprehensive Analysis of Mortality-related Health Metrics Associated With Mental Disorders: A Nationwide, Register-based Cohort Study

The Lancet, 394(10211), 1827-1835
KEY FINDING:

Study of 7 million people found ALL mental disorders - even mild anxiety or ADHD - shorten lifespan by 7-10 years. Cause is NOT suicide but heart attacks, strokes, diabetes.

Colton CW, Manderscheid RW (2006)

Congruencies in Increased Mortality Rates, Years of Potential Life Lost, and Causes of Death Among Public Mental Health Clients in Eight States

Preventing Chronic Disease, 3(2), A42
KEY FINDING:

People with serious mental disorders die 13-30 years earlier than expected from medical causes, not suicide.

🩺Diabetes & Mental Illness

Rajkumar AP, Horsdal HT, Wimberley T, et al. (2017)

Endogenous and Antipsychotic-Related Risks for Diabetes Mellitus in Young People with Schizophrenia: A Danish Population-Based Cohort Study

American Journal of Psychiatry, 174, 686-694
KEY FINDING:

People with schizophrenia are 3x more likely to develop diabetes - and this increased risk exists BEFORE taking any antipsychotic medications.

Mezuk B, Eaton WW, Albrecht S, Golden SH (2008)

Depression and Type 2 Diabetes over the Lifespan: A Meta-Analysis

Diabetes Care, 31, 2383-2390
KEY FINDING:

Meta-analysis showing bidirectional relationship: depression increases diabetes risk by 60%, and diabetes increases depression risk 2-3x.

Perry BI, Stochl J, Upthegrove R, et al. (2021)

Longitudinal Trends in Childhood Insulin Levels and Body Mass Index and Associations with Risks of Psychosis and Depression in Young Adults

JAMA Psychiatry, 78(4), 416-425
KEY FINDING:

Childhood insulin levels and BMI were associated with risks of both psychosis and depression in young adults - metabolic dysfunction precedes mental illness.

🧪Insulin & Brain Function

Chouinard VA, Henderson DC, Dalla Man C, et al. (2018)

Impaired Insulin Signaling in Unaffected Siblings and Patients with First-Episode Psychosis

Molecular Psychiatry, 24
KEY FINDING:

Impaired insulin signaling found in BOTH patients with first-episode psychosis AND their unaffected siblings - suggesting insulin resistance is a cause, not consequence.

Kleinridders A, Cai W, Cappellucci L, et al. (2015)

Insulin Resistance in Brain Alters Dopamine Turnover and Causes Behavioral Disorders

Proceedings of the National Academy of Sciences, 112(11), 3463-3468
KEY FINDING:

Insulin resistance in the brain alters dopamine turnover and causes behavioral disorders in mice.

Jin Z, Jin Y, Kumar-Mendu S, et al. (2011)

Insulin Reduces Neuronal Excitability by Turning on GABA(A) Channels That Generate Tonic Current

PLoS One, 6(1), e16188
KEY FINDING:

Insulin reduces brain cell excitability by activating GABA channels. Insulin resistance means loss of this inhibitory control.

😰Stress & Mitochondria

Picard M, McEwen BS, Epel ES, Sandi C (2018)

An Energetic View of Stress: Focus on Mitochondria

Frontiers in Neuroendocrinology, 49, 72-85
KEY FINDING:

Review of how stress affects mitochondria and how mitochondrial dysfunction affects stress responses.

Picard M, McManus MJ, Gray JD, et al. (2015)

Mitochondrial Functions Modulate Neuroendocrine, Metabolic, Inflammatory, and Transcriptional Responses to Acute Psychological Stress

Proceedings of the National Academy of Sciences, 112(48), E6614-E6623
KEY FINDING:

Manipulating just 4 mitochondrial genes affected ALL stress responses: cortisol, adrenaline, inflammation, metabolism, and gene expression.

Epel ES, Blackburn EH, Lin J, et al. (2004)

Accelerated Telomere Shortening in Response to Life Stress

Proceedings of the National Academy of Sciences, 101(49), 17312-17315
KEY FINDING:

Study of 58 women found those with highest stress aged 10 years faster on biological markers.

👶Adverse Childhood Experiences

Hughes K, Bellis MA, Hardcastle KA, et al. (2017)

The Effect of Multiple Adverse Childhood Experiences on Health: A Systematic Review and Meta-Analysis

Lancet Public Health, 2(8), e356-e366
KEY FINDING:

Meta-analysis of 37 studies with 250,000+ people: ACEs increase obesity/diabetes risk 25-52%, mental illness 3-6x, suicide attempts 30x.

Brown DW, Anda RF, Tiemeier H, et al. (2009)

Adverse Childhood Experiences and the Risk of Premature Mortality

American Journal of Preventive Medicine, 37(5), 389-396
KEY FINDING:

Six or more ACEs takes 20 years off life expectancy.

Yehuda R, Lehrner A (2018)

Intergenerational Transmission of Trauma Effects: Putative Role of Epigenetic Mechanisms

World Psychiatry, 17(3), 243-257
KEY FINDING:

Evidence that trauma can be transmitted to offspring through epigenetic changes.

😴Sleep & Mitochondria

Andreazza AC, Andersen ML, Alvarenga TA, et al. (2010)

Impairment of the Mitochondrial Electron Transport Chain Due to Sleep Deprivation in Mice

Journal of Psychiatric Research, 44(12), 775-780
KEY FINDING:

Sleep deprivation impairs mitochondrial electron transport chain function.

Peek CB, Affinati AH, Ramsey KM, et al. (2013)

Circadian Clock NAD+ Cycle Drives Mitochondrial Oxidative Metabolism in Mice

Science, 342(6158), 1243417
KEY FINDING:

Circadian rhythms directly control mitochondrial function through NAD+ cycles.

Szentirmai É, Millican NS, Massie AR, et al. (2019)

Butyrate, a Metabolite of Intestinal Bacteria, Enhances Sleep

Scientific Reports, 9(1), 7035
KEY FINDING:

Butyrate (made from fiber by gut bacteria) injected into mice increased sleep by 50-70%.

🏃Exercise & Mitochondria

Chekroud SR, Gueorguieva R, Zheutlin AB, et al. (2018)

Association Between Physical Exercise and Mental Health in 1.2 Million Individuals in the USA Between 2011 and 2015: A Cross-Sectional Study

Lancet Psychiatry, 5(9), 739-746
KEY FINDING:

Study of 1.2 million people found exercise is associated with significantly better mental health.

Steib K, Schäffner I, Jagasia R, Ebert B, Lie DC (2014)

Mitochondria Modify Exercise-Induced Development of Stem Cell-Derived Neurons in the Adult Brain

Journal of Neuroscience, 34(19), 6624
KEY FINDING:

Mitochondria are essential for how exercise creates new neurons in the brain.

🧬Neurotransmitters & Mitochondria

Fanibunda SE, et al. (2019)

Serotonin Regulates Mitochondrial Biogenesis and Function in Rodent Cortical Neurons via the 5-HT2A Receptor and SIRT1–PGC-1α Axis

Proceedings of the National Academy of Sciences, 116(22), 11028
KEY FINDING:

Serotonin stimulates mitochondrial biogenesis in brain cells - may explain why SSRIs help some people.

Kanellopoulos AK, Mariano V, Spinazzi M, et al. (2020)

Aralar Sequesters GABA into Hyperactive Mitochondria, Causing Social Behavior Deficits

Cell, 180(6), 1178-1197
KEY FINDING:

Mitochondria store GABA inside themselves and have neurotransmitter receptors.

Graves SM, Xie Z, Stout KA, et al. (2020)

Dopamine Metabolism by a Monoamine Oxidase Mitochondrial Shuttle Activates the Electron Transport Chain

Nature Neuroscience, 23, 15-20
KEY FINDING:

Dopamine metabolism occurs in mitochondria and directly activates energy production.

💊Medications & Mitochondria

Lundberg M, Millischer V, Backlund L, et al. (2020)

Lithium and the Interplay Between Telomeres and Mitochondria in Bipolar Disorder

Frontiers in Psychiatry, 11, 586083
KEY FINDING:

Lithium improves mitochondrial function and affects telomere length (aging markers).

Hayes JF, Lundin A, Wicks S, et al. (2019)

Association of Hydroxylmethyl Glutaryl Coenzyme A Reductase Inhibitors, L-Type Calcium Channel Antagonists, and Biguanides with Rates of Psychiatric Hospitalization and Self-Harm in Individuals with Serious Mental Illness

JAMA Psychiatry, 76(4), 382-390
KEY FINDING:

Metformin (works on mitochondria) was associated with reduced psychiatric hospitalization and self-harm.

Emmerzaal TL, Nijkamp G, Veldic M, et al. (2021)

Effect of Neuropsychiatric Medications on Mitochondrial Function: For Better or for Worse

Neuroscience & Biobehavioral Reviews, 127, 555-571
KEY FINDING:

Review of how psychiatric medications affect mitochondria - both positively and negatively.

Epilepsy & Mental Illness Connection

Reilly C, Atkinson P, Das KB, et al. (2014)

Neurobehavioral Comorbidities in Children with Active Epilepsy: A Population-Based Study

Pediatrics, 133(6), e1586
KEY FINDING:

20-40% of children with epilepsy also have ADHD, autism, or intellectual disability.

Ettinger AB, Reed ML, Goldberg JF, Hirschfeld RMA (2005)

Prevalence of Bipolar Symptoms in Epilepsy vs. Other Chronic Health Disorders

Neurology, 65(4), 535
KEY FINDING:

Bipolar disorder is 6x more common in people with epilepsy.

Hesdorffer DC, Hauser WA, Annegers JF (2001)

Major Depression Is a Risk Factor for Seizures in Older Adults

Annals of Neurology, 47(2), 246-249
KEY FINDING:

Major depression increases risk of unprovoked seizures by 6x.

📚

Complete References in the Book

“Brain Energy” contains over 500 citations from peer-reviewed journals. The Notes section spans 40+ pages with complete references for every claim made in the book.

📖 Get the Book