Willpower is a story we sell.

Jul 4, 2026 · 4 min · Issue #9

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A patient apologized to me last month before I'd even said hello.

She was in her fifties, in pre-op for a knee, and the first full sentence she said to me was, "I know I need to lose weight. I'm sorry. I know this makes your job harder."

She'd rehearsed it. You could tell. She's probably opened every medical appointment of her adult life with some version of that apology, because somewhere along the way, medicine, and everyone else, taught her that her body was a confession.

I've thought about her ever since. Not because of her weight. Because of the apology.

Two men, one instruction

Years ago I knew two men, I'll call them Tom and Rich, who got the same talking-to from the same doctor in the same year. Both in their forties. Both carrying weight. Both told the thing everyone gets told: eat less, move more, use some discipline.

Tom went home, changed almost nothing dramatic, dropped thirty pounds over a year, and kept it off. To this day he'll tell you it wasn't that hard, with the mild puzzlement of a man who doesn't understand what everyone's struggling about.

Rich did more than Tom. Tracked every bite. Joined the 5 a.m. gym crowd. White-knuckled through a hunger that, the way he described it, sounded like a smoke alarm that never shut off.

He lost weight, plateaued, regained, lost, regained more. Each round, the same doctor gave him the same advice, a little more sternly. And each round, Rich concluded a little more deeply that something was wrong with him. Not his biology. His character.

Same instruction. Same effort, honestly, more from Rich. Completely different outcomes.

If willpower were the whole story, that shouldn't be possible. Rich out-willed Tom by a mile and lost anyway.

What the story leaves out

Here's what I've learned across a career in medicine, and what the obesity specialists have been trying to tell everyone for years: the body is not a passive jar that calories go into and out of. It's an active system that defends its weight, and it does not defend fairly.

When Rich cut his intake, his body didn't shrug and shrink. It fought back the way bodies are built to: hunger hormones climbed and stayed climbed, fullness signals quieted, his metabolism dialed itself down to spend less. His brain turned up the volume on every food cue in the room.

That smoke alarm that never shut off? That wasn't weakness. That was his physiology doing exactly what a famine-survival machine is supposed to do, in a world it doesn't know is full of drive-thrus.

And the settings on that machine aren't chosen. Body weight runs in families the way height does. The genetics are strong, and nobody picked their draw. Tom and Rich weren't playing the same game with different effort. They were playing different games with the same scorecard.

Now put that machine in the modern food environment, engineered products tuned by teams of scientists to be impossible to stop eating, sold on every corner, advertised in every scroll, and then hand a person a pamphlet that says use discipline, and grade them on the result.

That's not a treatment plan. That's a setup.

We took a condition built out of genetics, hormones, and an engineered food environment, and billed it to the patient as a character flaw.

Why the story survives

If the willpower story fails this badly, why does everyone keep telling it?

Because it's a great product. The willpower story sells the diet that failed you (you didn't try hard enough, buy the next one). It flatters the naturally lean, who get to believe their metabolism is a virtue.

It's cheaper for everyone who'd otherwise have to fix food environments or cover treatment. And it gives all of us that little hit of moral clarity we love: a villain, even if the villain has to be the patient.

The only person the story doesn't serve is the one it's about.

And here's the tell, the thing that gives the whole game away. We don't do this for anything else. Nobody tells the man with high blood pressure that his arteries are a character issue. Nobody asks the woman with asthma if she's really tried not wheezing.

The moment a condition involves eating, and shows, we switch from medicine to morality. Same hospital. Different rules.

The bottom line

Let me be careful, because this can be heard two wrong ways.

I'm not saying choices don't matter. They do, and agency is real, and the boring fundamentals of food, movement, and sleep matter for every single body, whatever its size.

And I'm not saying it's hopeless, the honest opposite. Once you stop treating weight as a character test, real tools come off the shelf: changing the environment instead of out-willing it, building habits that don't rely on a hunger-strike, and yes, for many people, actual medical treatment for what is actually a medical condition. A conversation to have with a doctor, not a comment section.

What I'm saying is that blame was never one of the tools. In all my years in medicine, I have never once seen shame shrink anything but a person.

The woman in my pre-op bay didn't owe me an apology. Somewhere along the way, somebody owed her one.

So here's my question for you this week: Where in your own life have you been running a physiology problem (sleep, weight, energy, mood) through a character trial? And what would change if you moved it to the right courtroom?

Reply and tell me. I can't write back to everyone, but I read every single one.

That's all for this week.

See you next Saturday.

The Slow Saturday

One note, every Saturday morning.

Notes on living and aging well, from a physician who is also an entrepreneur and a tech nerd. Free to read.

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