Daniel Amen
Dr. Daniel Amen is a researcher and author working in the field of neuroimaging and psychiatric health. His published research focuses primarily on using brain single-photon emission computed tomography (SPECT) imaging to assess regional cerebral blood flow and neural connectivity. His work investigates functional brain imaging biomarkers across psychiatric and neurological conditions, including major depressive disorder, schizophrenia, ADHD, cognitive disorders, and the effects of adverse childhood experiences.
60 claims checked on air: 7 context 2 contradicted 6 overstated 36 supported 9 unverified
What they said on air - overstated
8 citing their own research
A study by Joseph Hibbeln at the NIH found that vegetarians experience a high incidence of depression due in part to low omega-3 fatty acids.
"Brand new study out yesterday from Joe Hibbeln from NIH: vegetarians have a high incidence of depression. And when he was writing about why, part of it was low omega-3 fatty acids." (said at 0:18:54)
A study led by Joseph R. Hibbeln analyzed data from 9,668 male partners of pregnant women in the Avon Longitudinal Study of Parents and Children (ALSPAC) and found that self-identified vegetarian men had higher depression scores and increased odds of significant depressive symptoms (adjusted OR 1.67, 95% CI 1.14–2.44) compared to non-vegetarians (PMID 28777971). However, stating that the study proved vegetarian diets cause depression due to low omega-3 fatty acids overstates the findings. The study was observational, meaning it could not prove causality, and the authors explicitly noted that reverse causation could not be ruled out. Furthermore, the abstract lists potential nutritional deficiency explanations such as cobalamin (vitamin B12) or iron rather than establishing omega-3 deficiency as the definitive cause.
Curcumin combined with vitamin D decreases amyloid plaques associated with Alzheimer's disease.
"It's also, when combined with vitamin D, been shown to decrease the plaques thought to be involved in Alzheimer's disease." (said at 0:25:40)
The claim is based on preliminary in vitro (cell culture) laboratory experiments rather than clinical trials in humans. In laboratory studies using macrophages isolated from Alzheimer's disease patients, combining 1α,25-dihydroxyvitamin D3 with curcuminoids enhanced the uptake (phagocytosis) and clearance of amyloid-beta in a subset of patient samples (termed Type I macrophages). However, there is no clinical trial evidence demonstrating that curcumin and vitamin D supplementation reduces brain amyloid plaque burden or improves clinical outcomes in Alzheimer's disease patients.
- partial: 1alpha,25-dihydroxyvitamin D3 interacts with curcuminoids to stimulate amyloid-beta cleara… (Journal of Alzheimer's disease : JAD 2009) · cited 214x in the literature
"In both Type I and Type II macrophages, 1,25D3 strongly stimulated Abeta phagocytosis and clearance while protecting against apoptosis. Certain synthetic curcuminoids in combination with 1,25D3 had additive effects on phagocytosis in Type I but not Type II macrophages." (abstract, results, passage verified)
pubmedfull study (doi) - partial: Genomic and nongenomic signaling induced by 1α,25(OH)2-vitamin D3 promotes the recovery of… (Journal of Alzheimer's disease : JAD 2012) · cited 127x in the literature
"Bisdemethoxycurcumin (BDC) is a VDR ligand and additive with 1,25D3 in promoting Aβ42 phagocytosis by Type I, but not by Type II macrophages." (abstract, results, passage verified)
pubmedfull study (doi)
Untreated depression doubles the risk of Alzheimer's disease in women and quadruples the risk in men.
"if you have untreated depression, in women it doubles your risk for Alzheimer's disease, in men it quadruples the risk." (said at 0:41:45)
The claim that untreated depression doubles Alzheimer's risk in women and quadruples it in men is overstated and contradicted by large pooled meta-analytic data. While observational studies have long established an association between late-life depressive symptoms and incident dementia or Alzheimer's disease (and some individual cohort studies, such as the PAQUID study, reported elevated dementia risk in men with proximal depressive symptoms but weaker associations in women), systematic multi-cohort investigations find no established, consistent 2-fold (women) versus 4-fold (men) dichotomy. In particular, a large individual-participant data meta-analysis from the COSMIC consortium (29,850 participants across 21 cohorts) found no discernible sex difference in the association between depression and dementia risk, showing that most major risk factors operate similarly in both sexes.
- partial: Exploring sex differences in the relationship between depressive symptoms and dementia inc… (Journal of the American Geriatrics Society 2003) · cited 146x in the literature
"Depressive symptoms increased risk of dementia at subsequent interview wave, but only for men (odds ratio (OR) (men) = 3.5, 95% confidence interval (CI) = 1.9-6.5; OR (women) = 1.2, 95% CI = 0.7-2.0, P-value for sex difference = 0.03)." (abstract, results, passage verified)
pubmedfull study (doi) - contradicts: Sex differences in dementia risk and risk factors: Individual-participant data analysis us… (Alzheimer's & dementia : the journal of the Alzheimer's Association 2023) · cited 134x in the literature
"Sex differences in dementia risk, and risk factor (RF) associations with dementia, remain uncertain across diverse ethno-regional groups... otherwise, there were no discernible sex differences in other RFs. Dementia risk was higher in women than men, with possible variations by country-level income settings, but most RFs appear to work similarly in women and men." (abstract, results)
pubmedfull study (doi)
Omega-3 fatty acids are equally effective as antidepressants in head-to-head comparisons for depression.
"Head-to-head against antidepressants, omega-3 fatty acids, equally effective for depression." (said at 0:43:03)
Direct head-to-head evidence comparing omega-3 fatty acids to standard antidepressants is extremely limited. A single small 8-week randomized trial of 60 outpatients (Jazayeri et al., 2008) observed similar reductions in depression scores between 1,000 mg/day of eicosapentaenoic acid (EPA) and 20 mg/day of fluoxetine. However, Cochrane systematic reviews evaluating omega-3 fatty acids for major depressive disorder identify only this single trial (40 evaluable participants) with very low-certainty evidence, concluding that evidence is insufficient to establish comparative equivalence. Furthermore, broader meta-analyses find that omega-3 fatty acids produce only a small, unlikely to be clinically meaningful benefit over placebo with substantial risk of bias.
- partial: Comparison of therapeutic effects of omega-3 fatty acid eicosapentaenoic acid and fluoxeti… (The Australian and New Zealand journal of psychiatry 2008) · cited 219x in the literature
"In the present 8 week trial EPA and fluoxetine had equal therapeutic effects in major depressive disorder. EPA + fluoxetine combination was superior to either of them alone." (abstract, conclusions, passage verified)
pubmedfull study (doi) - context: ω-3 Fatty acids for major depressive disorder in adults: an abridged Cochrane review. (BMJ open 2016) · cited 60x in the literature
"For n-3PUFAs versus antidepressants, no differences were found between treatments in depressive symptomology (MD=-0.70 (95% CI -5.88 to 4.48); 1 study, 40 participants, very low-quality evidence). At present, we do not have sufficient evidence to determine the effects of n-3PUFAs as a treatment for MDD." (abstract, results, passage verified)
pubmedfull study (doi) - context: Omega-3 fatty acids for depression in adults. (The Cochrane database of systematic reviews 2021)
"The review includes 35 relevant studies: 34 studies involving a total of 1924 participants investigated the impact of n-3PUFA supplementation compared to placebo, and one study involving 40 participants investigated the impact of n-3PUFA supplementation compared to antidepressant treatment." (abstract, results, passage verified)
pubmedfull study (doi)
Two studies from the Netherlands found that putting children with ADHD on an elimination diet resulted in 70% losing their symptoms.
"So there's two studies from Holland. When they put ADHD kids on an elimination diet, 70% of them lost their symptoms." (said at 0:44:36)
Two Dutch randomized trials led by Pelsser and colleagues (a 2009 pilot trial and the 2011 INCA trial published in The Lancet) evaluated a supervised few-foods restricted elimination diet in children with ADHD. The 2009 trial reported that 70% (by teacher ratings) to 73% (by parent ratings) of children in the diet group were clinical responders, defined as a ≥50% decrease in ADHD symptom scores. The 2011 INCA trial similarly found substantial improvements (defined as ≥40% improvement on the ADHD Rating Scale) in about 64% of participants. Describing this as 70% 'losing their symptoms' is overstated, as the trials measured significant symptom score reductions rather than full symptom remission or cure.
The geographic areas with the highest incidence of schizophrenia in the United States directly overlap with the highest incidence of Lyme disease.
"But if you look at a map of the United States and you look at the highest incidence of schizophrenia, it's going to show the Northeast, Michigan, and Illinois, and then the West Coast. And then if you overlay on the highest incidence of schizophrenia in the US the highest incidence of Lyme disease, they're exactly the same." (said at 0:49:44)
An ecological study published in 1994 examined US geographic patterns and observed that areas with higher reported schizophrenia rates (urbanized Northeastern, Northwestern, and Great Lakes states) showed a statistically significant regional correlation with the distribution of Lyme disease foci and Ixodid ticks. However, claiming the geographical maps are "exactly the same" overstates broad regional ecological correlations, which are prone to confounding (such as urbanization and diagnostic access) and do not establish an exact spatial match or individual-level causal link.
Fact-checked episodes
Publications
- Examining comorbid and transdiagnostic depression clinical outcomes across anxiety, autism, attention deficit hyperactivity disorder (ADHD), bipolar disorder, depression, and schizotypal personality groups: a novel NeuroMark SPECT approach.medRxiv : the preprint server for health sciences 2026 · CEBM Level 4
- A Replicable NeuroMark Template for Whole-Brain SPECT Reveals Data-Driven Perfusion Networks and Their Alterations in Schizophrenia.Neuroinformatics 2026 · CEBM Level 4
- Classifying schizophrenia patients and healthy individuals: Whole brain SPECT functional connectivity using support vector machine classification.Neuroimage. Reports 2026 · CEBM Level 4
- Functional vs Structural Cortical Deficit Pattern Biomarkers for Major Depressive Disorder.JAMA psychiatry 2025 · CEBM Level 4
- Predicting Regional Cerebral Blood Flow Using Voxel-Wise Resting-State Functional MRI.Brain sciences 2025 · CEBM Level 4
- A multi-site 99m Tc-HMPAO SPECT study of cerebral blood flow in a community sample of patients with major depression.Translational psychiatry 2024 · CEBM Level 4
- Adverse childhood experiences, brain function, and psychiatric diagnoses in a large adult clinical cohort.Frontiers in psychiatry 2024 · CEBM Level 4
- SPECT Functional Neuroimaging Distinguishes Adult Attention Deficit Hyperactivity Disorder From Healthy Controls in Big Data Imaging Cohorts.Frontiers in psychiatry 2021 · CEBM Level 4
- A New Way Forward: How Brain SPECT Imaging Can Improve Outcomes and Transform Mental Health Care Into Brain Health Care.Frontiers in psychiatry 2021 · CEBM Level 5
- Patterns of Regional Cerebral Blood Flow as a Function of Obesity in Adults.Journal of Alzheimer's disease : JAD 2020 · CEBM Level 4
- Deficits in Regional Cerebral Blood Flow on Brain SPECT Predict Treatment Resistant Depression.Journal of Alzheimer's disease : JAD 2018 · CEBM Level 4
- Patterns of Regional Cerebral Blood Flow as a Function of Age Throughout the Lifespan.Journal of Alzheimer's disease : JAD 2018 · CEBM Level 4
- Discriminative Properties of Hippocampal Hypoperfusion in Marijuana Users Compared to Healthy Controls: Implications for Marijuana Administration in Alzheimer's Dementia.Journal of Alzheimer's disease : JAD 2017 · CEBM Level 4
- Classification of Depression, Cognitive Disorders, and Co-Morbid Depression and Cognitive Disorders with Perfusion SPECT Neuroimaging.Journal of Alzheimer's disease : JAD 2017 · CEBM Level 4
- Quantitative Erythrocyte Omega-3 EPA Plus DHA Levels are Related to Higher Regional Cerebral Blood Flow on Brain SPECT.Journal of Alzheimer's disease : JAD 2017 · CEBM Level 4
- Gender-Based Cerebral Perfusion Differences in 46,034 Functional Neuroimaging Scans.Journal of Alzheimer's disease : JAD 2017 · CEBM Level 4
- Perfusion Neuroimaging Abnormalities Alone Distinguish National Football League Players from a Healthy Population.Journal of Alzheimer's disease : JAD 2016 · CEBM Level 4
- Functional neuroimaging with default mode network regions distinguishes PTSD from TBI in a military veteran population.Brain imaging and behavior 2015 · CEBM Level 4
- Functional Neuroimaging Distinguishes Posttraumatic Stress Disorder from Traumatic Brain Injury in Focused and Large Community Datasets.PloS one 2015 · CEBM Level 4
- Clinical comparison of 99mTc exametazime and 123I Ioflupane SPECT in patients with chronic mild traumatic brain injury.PloS one 2014 · CEBM Level 4
- Clinical utility of SPECT neuroimaging in the diagnosis and treatment of traumatic brain injury: a systematic review.PloS one 2014 · CEBM Level 1
- It's time to stop flying blind: how not looking at the brain leads to missed diagnoses, failed treatments, and dangerous behaviors.Alternative therapies in health and medicine 2013 · CEBM Level 4
- Multi-site six month outcome study of complex psychiatric patients evaluated with addition of brain SPECT imaging.Advances in mind-body medicine 2013 · CEBM Level 3
- Effects of brain-directed nutrients on cerebral blood flow and neuropsychological testing: a randomized, double-blind, placebo-controlled, crossover trial.Advances in mind-body medicine 2013 · CEBM Level 2
- Daniel Amen, MD: healing brain injury and damage from environmental toxins. Interviewed by Karen Burnett.Advances in mind-body medicine 2013 · CEBM Level 5
- A phase I study of low-pressure hyperbaric oxygen therapy for blast-induced post-concussion syndrome and post-traumatic stress disorder.Journal of neurotrauma 2012 · CEBM Level 4
- Daniel Amen, MD: the impact of brain imaging on psychiatry and treatment for improving brain health and function. Interview by Karen Burnett.Alternative therapies in health and medicine 2012 · CEBM Level 5
- The clinical utility of brain SPECT imaging in process addictions.Journal of psychoactive drugs 2012 · CEBM Level 5
- Specific ways brain SPECT imaging enhances clinical psychiatric practice.Journal of psychoactive drugs 2012 · CEBM Level 4
- Impact of playing American professional football on long-term brain function.The Journal of neuropsychiatry and clinical neurosciences 2011 · CEBM Level 4
- Elevated BMI is associated with decreased blood flow in the prefrontal cortex using SPECT imaging in healthy adults.Obesity (Silver Spring, Md.) 2011 · CEBM Level 4
- Reversing brain damage in former NFL players: implications for traumatic brain injury and substance abuse rehabilitation.Journal of psychoactive drugs 2011 · CEBM Level 3
- Brain SPECT Imaging in Complex Psychiatric Cases: An Evidence-Based, Underutilized Tool.The open neuroimaging journal 2011 · CEBM Level 5
- Cerebral blood flow differences between long-term meditators and non-meditators.Consciousness and cognition 2010 · CEBM Level 4
- High resolution brain SPECT imaging in a clinical substance abuse practice.Journal of psychoactive drugs 2010 · CEBM Level 5
- Brain SPECT imaging in clinical practice.The American journal of psychiatry 2010 · CEBM Level 5
- Cerebral blood flow changes during chanting meditation.Nuclear medicine communications 2009 · CEBM Level 3
- A comparative analysis of completed suicide using high resolution brain SPECT imaging.The Journal of neuropsychiatry and clinical neurosciences 2009 · CEBM Level 4
- Omentum transposition surgery for patients with Alzheimer's disease: a case series.Neurological research 2008 · CEBM Level 4
- Predicting positive and negative treatment responses to stimulants with brain SPECT imaging.Journal of psychoactive drugs 2008 · CEBM Level 4
- Preliminary evidence differentiating ADHD using brain SPECT imaging in older patients.Journal of psychoactive drugs 2008 · CEBM Level 4
- An analysis of regional cerebral blood flow in impulsive murderers using single photon emission computed tomography.The Journal of neuropsychiatry and clinical neurosciences 2007 · CEBM Level 4
- High-resolution brain SPECT imaging and eye movement desensitization and reprocessing in police officers with PTSD.The Journal of neuropsychiatry and clinical neurosciences 2005 · CEBM Level 4