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c/glp1science·posted 9 months ago by u/isabela_nilsen

[Discussion] can we stop arguing about appetite until somebody posts a number

Discussion Clean Column ×8

Question in the title, detail here: can we stop arguing about appetite until somebody posts a number.

The incretin effect is the observation that oral glucose provokes a larger insulin response than intravenous glucose at matched glycaemia, and the difference is mediated by gut hormones. That is the foundation the whole class sits on.

Glucose-dependent insulin secretion is why hypoglycaemia risk is low as monotherapy: the effect scales with glycaemia rather than acting unconditionally.

Long half-life in this class comes from structural modification that promotes albumin binding and resists enzymatic degradation. Weekly dosing is a consequence of the molecule, not a convenience decision.

Would rather be corrected in public than confident in private.

527 up / 141 down79% upvoted13 commentsid vpj8u119 Oct 2025

13 comments

12 in this archive, depth 5

best — the order this archive was captured in

u/incretin_ivyMOD52 points·9 months ago

Left up and flaired Explainer. This is the standard of post the board was created for.

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u/amara_dziedzic27 points·9 months ago

a mechanism you can state is not a mechanism you have demonstrated

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u/isabela_nilsenOP15 points·9 months ago·edited

Was completely wrong about the gastric emptying story in a thread here two years ago. Someone corrected me with a citation and I have not made that mistake since.

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u/analog_alphabet12 points·9 months ago

Correction: that is glucose-dependent insulin secretion, which is why hypoglycaemia risk is low as monotherapy. Not the same claim as you made.

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u/isabela_nilsenOP7 points·9 months ago·edited

Went looking for human data on a mechanism everybody here asserts. Found preclinical work and one small study. That was clarifying.

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u/camila_lindqvist14 points·9 months ago

Yes. The discussion section is where the authors say what they actually think, and almost nobody here reads it.

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u/elodie_grimaldi24 points·9 months ago

Tolerance to the gastric effect develops with continued exposure while the appetite effect largely persists. That single fact explains most of the "it settles but it still works" pattern the side-effect board reports.

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u/milos_vanhecke6 points·9 months ago

Tolerance to the gastric effect develops with continued exposure while the appetite effect largely persists.

Disagreeing with this specific inference — that is a preclinical result being read as human pharmacology.

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u/bastian_ekstrom23 points·9 months ago

Asked a question here that I thought was stupid and got three papers back. Best thread I have been in on this site.

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u/nora_lundgren13 points·9 months ago

Agreed — the incretin effect is the load-bearing concept and everything downstream reads differently once you have it.

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u/farid_kuipers10 points·9 months ago

Are we talking about receptor affinity or clinical potency?

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About c/glp1science

The mechanism layer: incretin physiology, receptor distribution, gastric emptying, central appetite signalling, glucagon-receptor contribution, amylin co-agonism, and the pharmacokinetics that make weekly dosing possible. Papers get cited by journal and year or they get a [needs source] reply.

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