Writing this once so I can stop repeating it across threads. It is about food noise, and it is deliberately narrow — everything I am not confident about is marked as such.
What is actually established
Food noise is the best term this community has produced and it describes something the trials did not measure well: the constant background computation about food that most people with obesity live with and most people without it do not believe exists. GLP-1 agonism reduces the salience of food cues in the reward pathway rather than simply reducing hunger, which is why the reported experience is silence rather than willpower. It is also why its return on dose reduction is the first thing people notice, well before the weight moves.
The condition it depends on
It is worth naming the loss side of it. Food was a source of pleasure and structure, and its removal can leave a gap that people are not prepared for.
What I am not sure about
What I actually want to know is whether the quiet is the same mechanism as the appetite suppression or a separate one, because they seem to come and go on different schedules. Happy to be told the question itself is wrong.
Dr.RenalNash said:Food noise is the best term this community has produced and it describes something the trials did not measure well: the constant background…
Central vs peripheral GLP-1R signaling in food noise: elegant studies using brain-penetrant vs peripherally-restricted GLP-1 agonists show that ~80% of the weight loss effect is centrally mediated[1].
The key brain regions: arcuate nucleus (appetite), area postrema (nausea), NTS (satiety), VTA/NAc (reward). Peripheral effects (gastric emptying, insulin secretion) contribute but are secondary for weight loss.
This has implications for next-gen drugs: optimizing brain penetration and CNS receptor occupancy may be more important than systemic exposure.
[1] Secher A, et al. J Clin Invest. 2014;124(10):4473-4488.
Dr.RenalNash said:Food noise is the best term this community has produced and it describes something the trials did not measure well: the constant background…
Phantom hunger vs real hunger on food noise: learning to distinguish between the two has been a revelation. Real hunger: gradual onset, physical stomach sensation, any food sounds good. Phantom hunger: sudden, emotionally triggered, specific food cravings, occurs right after eating.
The GLP-1 agonist suppresses real hunger beautifully. Phantom hunger still pops up but I can now recognize it for what it is — an emotional signal, not a physical need. Mindfulness training helped enormously with this distinction.
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Shop Reference StandardsNurseKim_ATL said:Phantom hunger vs real hunger on food noise: learning to distinguish between the two has been a revelation.
Rebound hunger after missed dose of food noise: I missed my injection by 3 days due to a shipping delay and the hunger came ROARING back. Like a switch flipped. It was eye-opening to feel the difference.
This experience actually reinforced my understanding of what the medication does — it's not just "suppressing appetite," it's normalizing dysregulated hunger signaling. When the drug wears off, you feel the full force of what it was managing.
mike.trainer_LA said:Central vs peripheral GLP-1R signaling in food noise: elegant studies using brain-penetrant vs peripherally-restricted GLP-1 agonists show that ~80%…
Can confirm. Same sequence, different timescale. I had assumed I was the exception until I read this.