“In 40 years of clinical practice and almost 30 years of teaching psychiatric residents, I’ve never encountered a patient as sick as Donald Trump.” That sentence, spoken by Dr. John Gartner on The Daily Beast Podcast, is not a political attack or a provocative sound bite. It’s the professional verdict of a clinical psychologist who spent decades at one of the country’s most respected medical institutions – and it is now the centerpiece of a serious, escalating debate about whether the sitting president of the United States is cognitively fit for office.
Gartner is a former assistant professor of psychiatry at Johns Hopkins University School of Medicine. His assessment didn’t emerge from a private clinical consultation. It came from years of watching Trump speak, post on social media, and move in public – the same method a diagnostician uses when evaluating any patient against their own prior baseline. And the pattern Gartner says he sees has been getting more pronounced, not less.
His core claim is that Trump has been showing signs of frontotemporal dementia since 2019, and that “the rate of deterioration is accelerating.” On a recent episode of The Daily Beast Podcast, he told host Joanna Coles that Trump is “not the same man he was four weeks ago.” For anyone following the broader debate about Trump’s psychological evaluation and fitness for office, the specificity of that language is striking.
What Frontotemporal Dementia Actually Does to the Brain
Dr. John Gartner has been vocal in his assessment that Donald Trump shows clinical signs of frontotemporal dementia (FTD). Frontotemporal dementia (FTD) is not the dementia most people picture. It does not begin with forgetting names or losing track of time. It attacks the brain’s frontal and temporal lobes – the regions that govern judgment, impulse control, personality regulation, and language. The neurologists, forensic psychiatrists, and general psychiatrists who signed the April 30, 2026 statement now in the Congressional Record described their group as “experienced in the diagnosis of cognitive disorders and in evaluating dangerousness to self and others” – and their formal concern centers on exactly these areas.
According to Hopkins Medicine, FTD affects behavior, personality, language, and movement. The National Institute on Aging notes that its symptoms progressively rob people of basic abilities including thinking, talking, walking, and social interaction – and that FTD does not plateau. It gets worse over time.
Gartner has explained that FTD is primarily a “behavioral problem” rather than a “memory problem,” though he has noted that Trump is also showing “memory deficits.” The distinction matters clinically. Someone with FTD may be capable of answering direct factual questions while losing the ability to regulate their own behavior, stay on topic, or inhibit impulsive actions. “What is most disturbing for the world,” Gartner said, “is that people with frontotemporal dementia lose all judgment, all inhibition, all ability to inhibit their behavior, and they become disinhibited and aggressive.”
The Specific Behaviors Gartner Points To
Gartner told The Daily Beast that “tangential speech is one of the diagnostic criteria for dementia,” pointing to Trump’s pattern of drifting away from questions and returning repeatedly to construction projects that bear his personal stamp. Tangential speech is the clinical term for beginning an answer and veering into loosely connected or entirely unrelated topics, never returning to the original point. It is a recognized symptom in FTD assessment.
In May 2026, Trump devoted a 44-minute press conference to the White House ballroom, escorting reporters through a construction site where he revealed he was building an underground structure featuring a military hospital, classified meeting rooms, and research facilities. A separate episode unfolded during an Oval Office event on clean coal, when Trump held up photographs comparing the length of the Lincoln Memorial Reflecting Pool to skyscrapers around the world.
Gartner has also flagged physical signs. He described Trump’s walking pattern as a “dead ringer telltale sign” – specifically what neuropsychologists refer to as a wide-based gait, where one leg swings out in a semicircle. In a separate episode of The Daily Beast Podcast, he cited a dementia specialist he had consulted who called this gait pattern “pathognomonic” – a term clinicians use for a symptom so specific it points to a single condition. Gartner also referenced Trump’s 2024 diagnosis of chronic venous insufficiency (CVI) and a widely-noted episode where the president appeared to have a droopy face as additional indicators of what he terms “psychomotor deterioration.” It’s important to note that on their own, gait changes and CVI are not diagnostic of FTD – what Gartner argues is that their appearance alongside language and behavioral changes forms a pattern.
Chronic venous insufficiency is a common circulatory condition in adults over 70, occurring when the valves in the leg veins can no longer push blood efficiently back toward the heart. On its own, it is not a marker of cognitive disease. Gartner’s point is that in combination with the other observable changes, it may contribute to a larger pattern consistent with neurological deterioration.
Gartner has argued that Trump’s recent behavior “shows the interaction” of frontotemporal dementia with malignant narcissism – a severe personality disorder he claims Trump has exhibited throughout his adult life and which is marked by paranoia, antisocial traits, and sadism. In his view, the two conditions amplify each other. “When people develop dementia,” he told The Daily Beast, “they become the worst versions of themselves.”
A Family History That Clinicians Have Flagged
Trump’s father, Fred Trump Sr., died in 1999 at the age of 93 from pneumonia complicated by Alzheimer’s disease, having been previously diagnosed with dementia. That history has been raised by multiple clinicians as a risk factor, not as proof of anything. Genetic predisposition doesn’t determine outcome, but family history of dementia is one of the standard variables clinicians note when building a patient’s risk profile.
Dr. Vin Gupta, a medical analyst for NBC News, reflected on Trump’s family history and said he was seeing a “trend line” that “seems like it’s getting worse,” pointing to an incident where Trump confused Greenland for Iceland and appeared to forget he is president during a visit to Davos in January 2026.
For readers who want to understand how a parent’s Alzheimer’s diagnosis intersects with their own cognitive health risk, our reporting on early signs of cognitive decline breaks down the science in practical terms.
The Medical Community’s Formal Response
On April 30, 2026, Senators Sheldon Whitehouse and Jack Reed entered a formal statement into the Congressional Record – Volume 172, Number 76 – signed by 36 physicians and mental health professionals, including neurologists, forensic psychiatrists, and geriatricians from Harvard, Tufts, Columbia, and George Washington University. The full statement, titled “Medical Concerns About President Donald J. Trump and His Fitness for Office,” was also published by the International Physicians for the Prevention of Nuclear War (IPPNW), whose co-founder Dr. Eric Chivian is among the signatories.
The group declared Trump “mentally unfit” to serve and warned of an “increasingly dangerous decline,” citing access to nuclear weapons as a reason for urgency. They called for use of the 25th Amendment. They were explicit that none of them had examined the president in person and were not offering a formal clinical diagnosis. Their assessment was based on publicly observable behavior, which the signers argued was sufficient to raise serious red flags about fitness for office.
The ethical tension at the center of all of this is real. A professional norm known as the Goldwater Rule, established in 1973 by the American Psychiatric Association after the 1964 presidential campaign, discourages mental health professionals from diagnosing public figures they haven’t personally examined. Gartner has maintained that the rule was not designed to silence professionals from warning about genuine danger, and he has continued speaking publicly on those grounds.
The White House Position and the Official Medical Record
Trump spent more than three hours at Walter Reed National Military Medical Center on May 26, 2026 for what the White House described as preventive medical and dental checkups. The White House released a memo detailing the results on May 29. In it, U.S. Navy Capt. Sean Barbabella, physician to the president, wrote that “President Donald Trump remains in excellent health, demonstrating strong cardiac, pulmonary, neurological, and overall physical function,” according to reporting by The Hill.
At Walter Reed, Trump also took the Montreal Cognitive Assessment – a 10-minute screening tool developed to detect mild cognitive impairment. Trump scored 30 out of 30, as in previous years. A score of 26 or above is the threshold for normal cognition, according to research published in a peer-reviewed systematic review . Scoring 30/30 is objectively incompatible with moderate or severe dementia – that is a real and meaningful result. The question Gartner and others raise is not whether the MoCA is useful, but whether it is sufficient. The tool was designed to screen for mild cognitive impairment; it was not designed as a comprehensive neurological workup and, as a 2020 study found, can miss cognitive impairment in patients whose deficits fall outside its narrower domains. A full FTD assessment requires a multidisciplinary team, neurological examination, formal cognitive testing, and brain imaging such as MRI or PET scans to identify structural changes. The Walter Reed memo notes a “normal neurological assessment” without disclosing what specific tests were used or their scores beyond the MoCA.
The report also showed Trump had gained 14 pounds since his April 2025 physical, weighing 238 pounds. Trump and his allies have consistently rejected suggestions of cognitive decline.
Read More: Doctors Say Trump Has ‘Psychosis’ – Here’s What the Evidence Actually Shows
What This Means for You
Public opinion has shifted measurably. A Washington Post-ABC News-Ipsos poll conducted April 24-28, 2026 among 2,560 U.S. adults found that 59 percent of respondents said Trump does not have the mental sharpness it takes to lead the country, while 55 percent said he is not in good enough physical health to serve as president. Those numbers reflect public perception – not clinical diagnosis – and it’s worth holding the two separately. Public opinion polls measure what people observe and believe; they do not constitute a medical finding.
What the debate over Trump’s psychological evaluation does illuminate is a question that matters far beyond the presidency: when observed behavior alone can raise legitimate clinical concern, and what kind of evaluation is actually required to answer it. A 10-minute screening tool that rules out moderate-to-severe dementia is not the same as a comprehensive neuropsychological examination. Anyone with a family member showing increasing behavioral disinhibition, tangential speech, or shifting personality should know that the proper next step is a full neuropsychological workup – not a brief screening test. The conversation to have with a doctor is not “does this person have dementia?” but “what evaluation would actually detect whether something is changing in the frontal lobe?”
That is a clinical question. And the physicians who signed the congressional statement, for all the controversy around their method, are asking the same one.
Disclaimer: The information provided here is for educational and informational purposes only and is not a substitute for professional psychological, psychiatric, or mental health advice, diagnosis, or treatment. Always seek the guidance of a licensed mental health professional, therapist, psychologist, or psychiatrist with any questions or concerns about your emotional well-being or mental health conditions. Never ignore professional advice or delay seeking support because of something you have read here.
AI Disclaimer: This article was created with the assistance of AI tools and reviewed by a human editor.