A previously healthy 21-year-old shows up with seven months of headaches and 30-plus pounds of weight gain he can’t explain. He’s eating the same and training more, and the scale climbs anyway. We hand the case to Dr. Austin Baraki cold and work it in real time: the exam, the labs, the MRI, and two diagnoses that turn a headache workup into the clearest proof we’ve got that body weight is set by the brain, not by character. This is the capstone of our weight series (willpower, calories, protein), and it ends on the drug that, this year, did something for these...
A previously healthy 21-year-old shows up with seven months of headaches and 30-plus pounds of weight gain he can’t explain. He’s eating the same and training more, and the scale climbs anyway. We hand the case to Dr. Austin Baraki cold and work it in real time: the exam, the labs, the MRI, and two diagnoses that turn a headache workup into the clearest proof we’ve got that body weight is set by the brain, not by character. This is the capstone of our weight series (willpower, calories, protein), and it ends on the drug that, this year, did something for these patients that nothing had done before.
Timestamps
- 00:00:00 Cold open: the man who couldn’t stop gaining weight
- 00:01:49 Meet the case (and the rules of the game)
- 00:02:36 The presentation: 21, headaches, unexplained weight gain
- 00:03:57 Austin’s one-liner and how a clinician builds a differential
- 00:05:10 Secondary headaches: what raises the red flag
- 00:13:12 The exam: vitals, and the eye findings that matter
- 00:14:37 The labs, one number at a time
- 00:16:08 Raised pressure and a visual-field clue (bitemporal hemianopia)
- 00:20:45 The MRI
- 00:21:54 First diagnosis: craniopharyngioma
- 00:25:32 The name: a tumor built from tooth tissue
- 00:25:50 Surgery, and what it costs
- 00:27:43 The new mystery: gaining weight faster than ever
- 00:33:41 Second diagnosis: acquired hypothalamic obesity
- 00:39:17 How your brain sets your weight: the POMC brake and the AgRP accelerator
- 00:42:07 What about leptin?
- 00:45:46 Monogenic vs common obesity
- 00:50:30 Why GLP-1 drugs still worked: the brainstem backdoor
- 00:52:11 Responders and non-responders
- 00:55:40 Setmelanotide: a drug for the broken circuit
- 00:56:53 TRANSCEND, and the new FDA approval
- 00:58:55 What it costs
- 01:01:32 Why we care about body fat at all: the garage
- 01:04:36 Flux: which fat is actually dangerous
- 01:09:15 Close
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2. Miller JL, et al; TRANSCEND investigators. Setmelanotide in acquired hypothalamic obesity: a phase 3 randomized trial. N Engl J Med. 2026.
3. Rhythm Pharmaceuticals. FDA approves IMCIVREE (setmelanotide) for acquired hypothalamic obesity. News release. March 19, 2026.
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