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 - contradicted
8 citing their own research
Low blood flow is the number one brain imaging predictor of Alzheimer's disease.
"Blood flow—low blood flow is the number one brain imaging predictor of Alzheimer's disease." (said at 0:56:00)
Low cerebral blood flow (hypoperfusion, typically assessed via SPECT or arterial spin labeling MRI) is not the leading or "number one" neuroimaging predictor of Alzheimer's disease. In clinical diagnostic frameworks and comparative imaging studies, pathological hallmark imaging (amyloid-beta PET and tau PET), fluorodeoxyglucose (FDG) PET, and structural MRI (such as medial temporal lobe and hippocampal volumetry) are the primary, most accurate imaging biomarkers for Alzheimer's disease. While characteristic patterns of hypoperfusion (particularly in the posterior cingulate and temporoparietal cortices) are observed in Alzheimer's disease and can assist in differential diagnosis or prognostication of mild cognitive impairment, systematic reviews and comparative studies demonstrate that FDG-PET and specific amyloid/tau imaging biomarkers consistently demonstrate higher diagnostic accuracy and predictive power than perfusion imaging.
- contradicts: A comparison of FDG-PET and blood flow SPECT in the diagnosis of neurodegenerative dementi… (International journal of geriatric psychiatry 2014) · cited 72x in the literature
"Published studies of SPECT accuracy show that it is a useful tool for differential diagnosis, with sensitivities of 65-85% for diagnosing Alzheimer's disease (AD) and specificities (for other neurodegenerative dementias) of 72-87%. PET studies generally report higher accuracy, with sensitivities of 75-99% for AD and specificities of 71-93%." (abstract, results, passage verified)
pubmedfull study (doi) - contradicts: Systematic review and meta-analysis of diagnostic test accuracy (DTA) studies: the role of… (Annals of palliative medicine 2022) · cited 9x in the literature
"The meta-analysis results showed that the sensitivity and specificity of FDG-PET imaging was significantly higher than those of SPECT and MRI imaging, and the differences were statistically significant (P<0.05)." (abstract, results, passage verified)
pubmedfull study (doi) - contradicts: Prognostic Value of A/T/N Biomarkers: Comparing Plasma and Imaging Modalities in Alzheimer… (Clinical nuclear medicine 2025) · cited 1x in the literature
"Among 1,614 plasma cohort and 130 imaging subcohort participants, tau markers demonstrated the strongest predictive value... suggesting that combinations of amyloid and tau PET captures the most relevant prognostic information." (abstract, results)
pubmedfull study (doi)
Low cerebral blood flow, particularly in the hippocampus, parietal lobes, and posterior cingulate gyrus, is the primary brain imaging predictor of Alzheimer's disease.
"The number one brain imaging predictor of Alzheimer's disease is low blood flow, especially in the hippocampus and in the back half of your brain, the parietal lobes, and an area called the posterior cingulate gyrus." (said at 0:08:25)
While hypoperfusion and hypometabolism in the posterior cingulate cortex, parietal lobes, and hippocampus are well-recognized neurodegenerative patterns in Alzheimer's disease (AD), low cerebral blood flow is not the primary or "number one" neuroimaging predictor of AD. Under the established National Institute on Aging and Alzheimer's Association (NIA-AA) diagnostic and research frameworks, the primary Core-1 and Core-2 diagnostic imaging biomarkers for Alzheimer's disease are amyloid-beta PET and tau PET. Functional imaging measures such as regional perfusion or FDG-PET metabolism reflect downstream neurodegeneration ('N') or vascular changes ('V') rather than the primary disease-defining biomarkers.
- context: Glucose metabolism in posterior cingulate cortex has supplementary value to predict the pr… (GeroScience 2024) · cited 13x in the literature
"Amyloid-β (Aβ) and tau are important biomarkers to predict the progression of cognitively unimpaired (CU) to dementia due to Alzheimer's disease (AD), according to the diagnosis framework from the US National Institute on Aging and the Alzheimer's Association (NIA-AA)... As a typical characteristic of neurodegeneration in the diagnosis framework, the hypometabolism of the posterior cingulate cortex (PCC) has significant clinical value in the early prediction and prevention of AD. In this paper, we proposed the glucose metabolism in the PCC as a biomarker supplement to Aβ and tau biomarkers." (abstract, results, passage verified)
pubmedfull study (doi) - contradicts: The 2024 NIA-AA biological definition of Alzheimer's disease: linking biomarkers to clinic… (Frontiers in dementia 2026) · cited 11x in the literature
"The 2024 framework defines AD by its underlying pathology rather than clinical symptoms, recognizing that biomarker evidence alone can establish diagnosis. It expands the traditional AT (N) model into a multimodal profile (AT 1 T 2 NISV), in which Core-1 biomarkers (A and T 1 ) are diagnostic, while Core-2 biomarkers (T 2 ) support biological staging. Non-specific but mechanistically important processes (N, neurodegeneration; I, inflammation) and common co-pathologies (S, α -synuclein; V, vascular injury) are also incorporated" (abstract, results, passage verified)
pubmedfull study (doi)
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