Weekly injection day thread — what worked for you?

From the other side of the consultation, briefly. The mechanism and the magnitude are separate questions. Agreeing that something happens says nothing about whether it happens enough to act on.

NicoleRaleigh said:

If you are comparing against somebody else’s result, check that you are comparing the same measurement taken the same way.

Coming at NicoleRaleigh’s question from a different direction. Most of what circulates confidently in this community traces back to one summary of one study, and the qualifier was dropped somewhere in the third retelling.

One concrete data point for the thread. The mechanism that matters here is not stomach emptying, it is central. GLP-1 receptor agonism in the arcuate nucleus stimulates POMC neurons and suppresses AgRP/NPY signalling, which is why the effect is appetite and food salience rather than physical fullness. Delayed gastric emptying largely tachyphylaxes over the first months; the appetite effect does not.

Happy to go further on any of that.

A narrower follow-up, since the general answer is now clear:

How much of the between-person variation is pharmacokinetic and how much is just adherence measured badly?

Moderator note: the sourcing question belongs in the vendor section and has been split out. Carry on.