Thread by @JamesThrot

As a neurologist, I’ve dealt with Frontotemporal Dementia (FTD) patients for years

I often pondered how diabolical it would be if a world leader suffered the same fate

Now I’m seeing it play out in real time

Without impeachment, this will get darker than you could ever imagine

Frontotemporal dementia attacks the frontal lobes. The brain’s command center for judgment, empathy, impulse control, moral reasoning and long-term planning.

Imagine a world leader whose frontal lobes progressively fail, but no one intervenes.

Or worse, they cheer it on.

As FTD progresses, disinhibition dominates.

The leader may issue impulsive orders, make erratic public statements or flout norms & laws.

Even in those who were previously unmalicious, there would be a genuine neurological inability to foresee consequences.

Empathy erodes.

Decisions that would once horrify a morally intact leader; targeting vulnerable populations, ignoring human suffering, prioritising personal gain over collective safety etc start to feel trivial.

Imagine this in a leader who wasn’t morally intact to begin with.

Judgment collapses.

Strategic foresight, risk assessment, ethical reasoning and tactical nous are replaced with short-term, self-referential thinking.

Allies will soon be alienated, enemies emboldened, and crises mismanaged.

FTD often induces compulsive behaviours.

Obsession with trivialities, repetitive announcements, rigid black or white thinking, and fixation on symbolic victories over substantive problems.

Everything becomes increasingly theatrical.

Language may falter.

In some FTD variants, speech becomes tangential, overconfident, belligerent, or socially tone-deaf.

Messages are delivered with conviction, masking the cognitive disintegration beneath.

This can give the dangerous illusion of competence.

Moral reasoning flattens.

Nuanced ethical distinctions fade.

Complex dilemmas are simplified into win/lose or me/others scenarios, making destructive or unethical policies more likely to pass unchallenged.

If those who should challenge fear challenging, a dark mess unfolds.

Left unchecked, these cognitive and emotional deficits cascade.

Disinhibition combined with a lack of empathy, poor judgment and moral flattening inevitably leads to decision making that increasingly imperils not only the nation they rule, but global stability.

Institutions & advisors exist to mitigate human error.

FTD in leadership illustrates why cognitive health isn’t simply a private matter, it’s a societal one.

Checks on power are essential precisely because human brains fail. Are sufficient checks in place currently? I’d say not

Brilliance or charisma, if they ever existed in the first place, cannot compensate for frontal lobe dysfunction.

Without intervention, cognitive decline in leadership has direct, measurable consequences on policy, conflict, and most importantly, human lives.

Imagine a world leader who cannot resist impulsivity, cannot weigh moral cost, cannot foresee consequences, and cannot plan beyond immediate desires.

Every crisis inescapably becomes a mirror of their brain’s deficits; chaotic, destructive, impulsive, irrational, amoral.

FTD doesn’t erase history, but it erodes the ability to learn from it. Past mistakes barely even register, ultimately becoming irrelevant.

The leader drifts further from reality & so too do the people who rely on their judgment. Especially for those who hang on his every word.

In short, unchecked frontal lobe degeneration in leadership is not just a clinical problem, it is a seriously gargantuan geopolitical risk.

Cognitive decline in power, especially when invisible, or unchallenged (as it is here), can ripple across nations & generations.

Society assumes competence in its leaders (Trump an exception to this rule).

But FTD shatters that assumption quietly at first, then catastrophically. It is insidious by nature.

Vigilance, accountability, and structural checks exist precisely because the human brain is fallible

This process is unfolding in someone with control over armies, nuclear weapons, economic systems, and international diplomacy

The neurological degeneration of a few cubic centimeters of cortex has already become a global risk factor.

And it will continue to worsen.