Watch: Dr. John Gartner Warns Congress—Trump is Going to Go Nuclear

Dr. John Gartner warns Congress that Donald Trump’s worsening dementia makes him more dangerous by the day — and predicts he will kill more people than Hitler if he isn’t stopped. The press won’t say it. We will.

President Donald Trump attends UFC 316 at the Prudential Center in Newark, NJ., June 7, 2025. (Official White House Photo by Daniel Torok)
Serena Zehlius member of the Zany Progressive team
Serena Zehlius
Serena Zehlius member of the Zany Progressive team
Senior Editor
Serena Zehlius is a passionate writer and Certified Human Rights Consultant with a knack for blending humor and satire into her insights on news, politics, and...
- Senior Editor
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Dr. John Gartner — prominent psychologist, former Johns Hopkins University Medical School professor, and founder of Duty To Warn — sat down with SiriusXM’s Dean Obeidallah and delivered a warning no American should ignore.

Donald Trump is becoming more dangerous, more sadistic, and more impulsive as his frontal lobe deteriorates from dementia. And he still has the nuclear codes. Gartner didn’t hedge. He didn’t soften it. He said it plainly:

“I’m predicting that Donald Trump will kill more people than Hitler.”
Dr. John Gartner, Psychologist, Founder of Duty to Warn
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That isn’t a joke. That isn’t hyperbole. That is a serious mental health professional, with decades of clinical experience, telling the country what he sees coming.

He hopes he’s wrong. We should hope so too. But hope is not a plan, and we have to take this seriously.

A serious warning from a serious clinician

This interview was illuminating and terrifying at the same time. Dr. Gartner is not a pundit. He’s an accomplished psychologist who has spent years documenting Trump’s cognitive decline in real time — and his predictions keep coming true.

Psychologist dr. John gartner
Dr. John Gartner’s psychology practice is located in Baltimore, Maryland. (Source: Business website)

Listening to him connect the symptoms of Trump’s dementia to the behaviors we’ve all been watching unfold is the kind of clarity legacy media refuses to give us. The disinhibition. The rage that can’t be contained. The cruelty that keeps escalating. The disordered thinking. None of it is random. All of it is a pattern, and the pattern is getting worse.

Congress has been warned. Repeatedly.

I didn’t realize how much work Dr. Gartner has done behind the scenes to warn members of Congress that the president is not fit to lead this country. He’s been sounding the alarm for years. He’s not alone. More psychiatrists, clinicians, and mental health organizations are sending letters and meeting with lawmakers than at any point in modern history.

Dr. Gartner, along with a coalition of dozens of medical and psychiatric experts, has issued warnings to members of Congress that President Donald Trump is mentally and cognitively unfit to lead

Their warnings focus on how he is not fit to lead the world with severe mental illness and frontotemporal dementia:

The Experts’ Letter: A letter signed by 36 neurologists, psychiatrists, and mental health professionals was formally submitted into the Congressional Record. The experts stated that President Trump exhibits “objectively observable” signs of cognitive deterioration, delusional beliefs, and severely impaired impulse control.

Specific Diagnoses: Dr. Gartner has characterized the President as exhibiting “malignant narcissism” compounded by signs of organic brain disease, such as frontotemporal dementia. Experts note that these compounding conditions lead to extreme impulsivity, disinhibition, and paranoia.

Dr. John gartner: "i'm predicting that donald trump will kill more people than hitler. "

Congress has the information. Congress has the duty. Congress is doing nothing.

And every day they refuse to act, we move closer to the worst-case scenario Dr. John Gartner is describing — a president whose impulse control is failing, whose rage is unchecked, and whose finger is on the button.

The press is failing us

Legacy media is treating Trump’s behavior as though it’s normal. It is not normal. After you hear what Dr. Gartner has to say, you’ll understand just how badly the press is failing the American people right now. They are sanewashing a man in cognitive freefall while millions of lives hang in the balance.

We don’t have the luxury of pretending this is politics as usual.

Buckle up. Strap in. Prepare for impact. And then get to work. Because we are the ones who are going to have to save these lives.

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Serena Zehlius member of the Zany Progressive team
Senior Editor
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Serena Zehlius is a passionate writer and Certified Human Rights Consultant with a knack for blending humor and satire into her insights on news, politics, and social issues. Her love for animals is matched only by her commitment to human rights and progressive values. When she’s not writing about politics, you’ll find her outside enjoying nature.
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