the appetite question that gets asked weekly, answered properly
the appetite question that gets asked weekly, answered properly. Change my mind, genuinely — I have no stake in being right about this. The GIP question, which is the most interesting unsettled thing in this field. Dual agonism at GIP and GLP-1 receptors produces clinical results that are robust and well replicated.…
Went looking for human data on a mechanism everybody here asserts. Found preclinical work and one small study. That was clarifying.
Is there any human data on that mechanism yet?
Is that from a human study or a preclinical model?
Do you have the paper, or a summary of it?
The half-life explanation was the thing that made weekly dosing intuitive for me rather than arbitrary.
Why mechanism talk keeps misleading people, including me.
A mechanism tells you a direction. It does not tell you a magnitude, a timescale, or whether the pathway is operative at the exposures involved. "Receptor X is expressed in tissue Y" is a fact; "therefore effect Z in a person" is a hypothesis with several missing steps.
The corrective is boring and it works: ask whether the evidence is preclinical or human, ask what exposure was used, and read the limitations section before the abstract. Most of the confidently wrong posts on this board — several of them mine — skipped all three.
gastric emptying slows, it does not stop
the central appetite effect is doing more work than the gut effect
preclinical is not clinical and rodents are not small people
preclinical is not clinical and rodents are not small people
Adding the caveat the paper itself makes in its limitations section, which is stronger than anything in this thread.