Case Study 1 — Twenty Years, Four Attempts: Theo's Graph, Read Properly

Theo Vasquez is an illustrative composite carried through this book. ⚠️ The pattern, the mechanisms and the costs are drawn from what the literature and clinical practice describe; the person is constructed.

Setup

He drew it on the back of an envelope. It took him four minutes.

⚠️ Nobody had ever asked him for it.

Twenty years of consultations about his weight, and not one of them had begun with "show me what it's actually done."

Four attempts. ⚠️ Four successes. Nineteen kilos of net gain.

Attempt by attempt

Age 35 — the gym and the carb rule

Lost 11 kg in about five months.

⚠️ What was actually happening: the gym added maybe 250 kcal/day of expenditure. "No carbs after 6" removed his evening beer, his post-dinner toast and the biscuits with tea — roughly 600 kcal of unexamined eating, abolished by a rule that had nothing to do with carbohydrate.

⚠️ Chapter 17's shape 8: count the changes. He credited the carbohydrate timing. The mechanism was that a rule about when removed a category of eating he had never evaluated.

Why it ended: ⚠️ his gym closed for refurbishment for six weeks. He never went back.

⚠️ Note what ended it: not hunger, not motivation, not willpower. A building.

The plan had a single point of failure and nobody had asked what would happen if it broke.

Age 39 — the shakes

Lost 10 kg in 12 weeks. Fastest of the four.

⚠️ And this is the attempt with the highest regain velocity — back above baseline within a year.

What was happening: a total diet replacement, roughly 800–1,000 kcal/day. ⚠️ It works, and it is a legitimate clinical tool (§24.8) — when it is followed by a structured maintenance phase.

His had none. Week 13 was "go back to eating normally."

⚠️ Which is precisely the moment §24.5's appetite adaptations are at their strongest and his environment was unchanged.

💡 ⚠️ The fastest loss produced the fastest regain, and it was the only attempt where that relationship is likely to be causal rather than coincidental.

Large, rapid deficits produce larger appetite adaptation — and a twelve-week programme with no maintenance phase is, structurally, a device for generating maximum hunger at the exact point support is withdrawn.

Age 43 — the points programme

Lost 7 kg over about seven months. The slowest and best-designed of the four.

⚠️ It had a maintenance phase, weekly weigh-ins, and a group. All three are things §24.7 and §24.14 recommend.

Why it ended: ⚠️ his father was diagnosed with cancer, and he stopped attending.

He regained 8 kg over the following ten months.

⚠️ This is the attempt that should have worked, and life intervened.

Which is not a footnote — it's the central design problem in maintenance. §24.2 says the requirement is indefinite, and an indefinite requirement will intersect with bereavement, illness, job loss, a new baby, or a house move, because twenty years contains all of those.

⚠️ A maintenance plan that assumes stable circumstances is a maintenance plan for a life nobody has.

Age 46 — the fasting

Chapter 21's full arc. Lost 4.2 kg, plateaued, regained. ⚠️ Perfect compliance throughout, and he concluded his metabolism had adapted or he lacked discipline.

What the four have in common

⚠️ Five things, and none of them is about Theo.

1. Every one produced weight loss. ⚠️ The intervention was never the problem.

2. ⚠️ None had a maintenance plan that survived contact with his life. One had no maintenance phase at all; one depended on a building; one depended on attending a group; one had no plan because nobody thought it needed one.

3. ⚠️ Every one attributed the loss to the wrong mechanism. Carbohydrate timing, shakes, points, fasting window — and in all four cases the operative change was that a rule removed a category of unexamined eating.

4. Nobody set the expectation. ⚠️ Not once was he told that most regain, that appetite would change and stay changed, or that maintenance is a different problem from loss.

5. ⚠️ And every regain was interpreted as a personal failure — by him, and implicitly by everyone he consulted.

What we did differently

⚠️ The first consultation contained no diet.

Instead:

1. Drew the graph. ⚠️ Four minutes, and it reframed twenty years. "You've succeeded four times" is a true sentence he had never heard.

2. ⚠️ Checked the medication timeline (§24.1b). Nothing to find, but it took ninety seconds and should have been done in 2011.

3. Named the mechanism. ⚠️ §24.5, explicitly: hunger after weight loss is measurable, hormonal and persistent. His reaction was the one I see most often — "So it's not just me being weak" — and it visibly changed the conversation.

4. Asked what ended each attempt. ⚠️ A closed gym, a father's diagnosis, a programme with no week 13, and a compensation curve nobody had warned him about. None of those is a willpower failure and all four are designable-around.

5. ⚠️ Wrote the maintenance plan first. Before any deficit. The question was: what will you still be doing in three years? His answer, after some negotiation, was: walking the dog for an hour, weighing weekly, and cooking four nights.

6. And set the target honestly (§24.14b). ⚠️ A1c 5.9% puts him in the group where weight is a legitimate target (Chapter 26). Goal: 7–8%, held. Not 78 kg.

Fourteen months on

⚠️ The plateau was the point at which every previous attempt had ended in regain. This time it was labelled in advance as the destination.

⚠️ What he said at month twelve:

"The difference is I'm not waiting for it to be over."

Analysis

1. ⚠️ All four historical attempts worked. The interventions were never the failure.

2. What ended them was structural, not motivational. ⚠️ A refurbishment, a bereavement, a programme that stopped at week 12, and an unwarned compensation curve.

3. ⚠️ The fastest loss produced the fastest regain — and that one is plausibly causal, via §24.5.

4. Every attempt credited the wrong mechanism, which meant none of them was reproducible on purpose (Chapter 19 Case Study 1's Kelsey, exactly).

5. ⚠️ Nobody had ever drawn the graph. Four minutes, and it converted "I always fail" into "I've succeeded four times and never been given a maintenance plan."

6. The medication check took ninety seconds and should have happened thirteen years earlier.

7. ⚠️ And the target was set at 7–8%, not at a weight from 1998. Chapter 26's dose-response means that's where the health benefit is — and it's a target that can be reached and held rather than reached and lost.

Discussion Questions

1. ⚠️ Nobody had asked for the graph in twenty years. Why not? What does a typical consultation optimize for instead, and what would have to change?

2. The 39-year-old attempt lost the most, fastest, and regained above baseline. ⚠️ Should total diet replacement be offered without a mandatory maintenance phase? Design the rule.

3. ⚠️ The best-designed attempt was ended by his father's cancer diagnosis. Can a maintenance plan be designed to survive bereavement? What would that look like concretely?

4. "You've succeeded four times" is true and reframes everything. ⚠️ Is it also, in some sense, misleading? Argue it.

5. ⚠️ The goal was set at 7–8% weight loss rather than at 78 kg. How would you have that conversation with someone whose stated goal is a number from their twenties?

6. He plateaued at month 9 and stopped on purpose. ⚠️ §24.8b says a plateau at a sustainable weight is a settling point, not a failure. How do you tell the difference between "the right place to stop" and "giving up"? Is there a difference?

Your Turn

⚠️ This is the Project Checkpoint, done properly. If weight-focused reflection is distressing, skip it.

Step 1 — Draw the graph. ⚠️ Four minutes. Rough is fine. Weight, what you did, what happened after.

Step 2 — Count three numbers:

Serious attempts: _ · How many produced loss: _ · How many held past two years: ____

⚠️ For most people the first two match and the third is zero. That is the normal result.

Step 3 — For each attempt, answer the question nobody asks:

⚠️ "What ENDED it?"

Not "I lost motivation." What actually happened, in the world?

⚠️ In my experience the answers are overwhelmingly structural — a job change, a house move, an injury, a bereavement, a programme that stopped, a facility that closed. Almost never "I stopped caring."

Step 4 — The maintenance audit:

For each attempt, what was the maintenance plan? ____

⚠️ If it's "there wasn't one" four times, that's the finding — and it's the chapter's thesis in your own handwriting.

Step 5 — Check the medication timeline (§24.1b). ⚠️ Ninety seconds. Did any gain start within 6–12 months of a new prescription?

Step 6 — And before anything else, write this:

⚠️ "What will I still be doing in three years?"

Three things. Specific. Things you'd genuinely still do on a bad week.

⚠️ If you can't fill it in, don't start a deficit yet. §24.2 says what happens next, and Theo has done it four times.