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c/glp1science·posted 7 days ago by u/sig_figs_sam

[Paper] receptor distribution and why the GI effects were predictable

Paper Well Actually ×9

Trying to settle this properly because the thread from last year went in circles.

The claim: gastric emptying matters. The counter-claim: it is measurement error. Both sides have been asserting it confidently for about 14 months without either producing anything.

What would actually settle it is 21 people measuring the same thing the same way. I have started; my numbers are below. They lean one way but not strongly enough for me to declare victory.

If you have data, post the data. If you have an opinion, flair it as an opinion.

413 up / 108 down79% upvoted25 commentsid 16xr6q23 Jul 2026

25 comments

17 in this archive, depth 5

best — the order this archive was captured in

u/flair_enthusiast33 points·6 days ago

The pharmacology literature is interesting but rodent models do not scale linearly to human dosing.

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u/sig_figs_samOPmod · analytical48 points·5 days ago

Strongly agree. Central appetite is real but people overstate it.

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u/tomas_lundgren16 points·6 days ago

the half-life is half-life, affects steady state timing

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u/ismael_chukwu12 points·5 days ago

the 10-day half-life means week 10 is still ramp-up pharmacokinetically

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u/sig_figs_samOPmod · analytical6 points·5 days ago

the 10-day half-life means week 10 is still ramp-up pharmacokinetically

Counter-anecdote: opposite result, same dose. Which mostly tells us the variance is huge.

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u/nadia_bakker3 points·4 days ago

cite the paper: journal, year, first author, links optional

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u/ilias_kaufmann-21 points·6 days ago

Yeah, the incretin mechanism is doing the work here.

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u/sig_figs_samOPmod · analytical1 point·6 days ago

Yeah, the incretin mechanism is doing the work here.

Adding to this: incretin is doing more work than the comment implies.

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u/incretin_ivyMOD16 points·6 days ago

Flair changed to match the content. Read the sidebar before posting next time and we are square.

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u/karma_irrelevant10 points·6 days ago
good post. terrible flair.
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u/titration_marshalmod · c/semaglutide2 points·6 days ago

This is correct. Rodent data is investigational, not predictive.

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u/yusuf_ramos1 point·5 days ago

Disagree but this is the good kind of wrong — it is specific enough to be checked.

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u/ferran_dahlberg1 point·5 days ago

mechanistic speculation is welcome if flaired as speculation

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u/ismael_eriksen1 point·5 days ago

Yeah, the incretin mechanism is doing the work here.

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u/camila_mensa8 points·6 days ago

This is correct. Rodent data is investigational, not predictive.

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u/vomit_free_since2 points·6 days ago

Slight fix: the number was 96.8, not 98.6. Decimal point, but a fairly consequential one.

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u/bastian_eriksen5 points·5 days ago

Dead space in the needle hub holds a small but non-trivial volume. On low-volume draws that can be several units.

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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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