The food noise came back three weeks after I reduced my dose, well before the weight moved, which tells me something about which effect tracks what.
The narrow version of the question 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.
If the honest answer is that nobody knows, that is a useful answer and I would rather have it.
mark_tokyo said:The food noise came back three weeks after I reduced my dose, well before the weight moved, which tells me something about which effect tracks what.
The GLP-1 and alcohol use disorder connection, relevant to food noise: observational data from Scandinavian registries shows reduced alcohol-related hospitalizations in GLP-1 agonist users[1].
The mechanism is plausible: GLP-1R is expressed in the mesolimbic reward pathway (VTA, nucleus accumbens). Agonism at these receptors may reduce the reinforcing properties of alcohol, similar to the reduction in "food noise."
RCTs for GLP-1 agonists in AUD are now underway. If positive, this would be a paradigm-shifting repurposing of existing medications.
[1] Wang W, et al. Nat Med. 2024;30:574-584.
PharmacoVig_BOS said:The GLP-1 and alcohol use disorder connection, relevant to food noise: observational data from Scandinavian registries shows reduced alcohol-related…
Neuroscience perspective on food noise:
GLP-1 receptors are expressed throughout the CNS, with high density in the hypothalamic arcuate nucleus, area postrema, and — critically — the mesolimbic reward pathway[1].
This is directly relevant to food noise because the central effects of GLP-1 agonists extend far beyond simple appetite suppression. The reduction in "food noise" that patients describe is likely mediated by modulation of dopaminergic signaling in the VTA and nucleus accumbens.
The emerging data on reduced addictive behaviors (alcohol, gambling) further supports this mechanism. food noise should be understood in this broader neurobiological context.
[1] Merchenthaler I, et al. J Comp Neurol. 1999;403(2):261-280.
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Shop Reference Standardsmark_tokyo said:The food noise came back three weeks after I reduced my dose, well before the weight moved, which tells me something about which effect tracks what.
Same pattern here, and in the same order. The detail I would add is minor and it is already implied above.
From the other side of the consultation, briefly.
mark_tokyo said:...regarding food noise mechanism of action...
To build on this — the mechanism is more complex than "it makes you less hungry." GLP-1 agonists:
- Activate hypothalamic satiety centers (appetite reduction)
- Delay gastric emptying (prolonged fullness)
- Potentiate glucose-dependent insulin secretion
- Suppress glucagon secretion
- Modulate reward pathway dopaminergic signaling
- Reduce hepatic lipogenesis
- Have direct cardiovascular protective effects
It's a multi-target drug with systemic metabolic effects. Understanding the mechanism helps us predict and manage side effects.