is the "week 4 wall" a real physiological thing or just when people start actually weighing themselves properly
Genuine discussion question, not trying to be contrarian for its own sake this time. Is there an actual physiological reason weeks 4-ish tend to stall, or is it mostly a measurement artifact — people start obsessively daily-weighing right around when the novelty of starting wears off, and that's when they first notice normal noise as a "stall"?
best — the order this archive was captured in
bit of both honestly. there's a real pharmacological piece — you're often still mid-titration around week 4-8, and the biggest satiety effects can lag the biggest dose increases by a couple weeks. but there's also a huge measurement-noise piece layered on top, and most people can't tell which one they're looking at.
ok that's a satisfying answer, "both, and you can't easily separate them" is more honest than either extreme
the gastric emptying / satiety effect does seem to have some lag behind dose changes in what people report, though it's not something I've seen cleanly isolated in the trial data either
the measurement-artifact piece is underrated though. week 1-3 people are riding novelty and adrenaline and often not weighing carefully. week 4 the novelty wears off, they start weighing daily and obsessively, and daily noise looks like a wall purely because they're finally looking closely enough to see it.
this matches literally every "why did it stop working" post I've read the comments on, half of them mention starting to weigh daily "around week 4"
as someone whose whole personality is this topic: I think it's mostly noise plus a titration lag, and the "physiological wall" framing gets more credit than it deserves because it's a satisfying story.
SURPASS-2 data does show individual variability in early response, but I don't think there's a clean published signal for a specific week-4 dip as a population-level phenomenon, pretty sure that's the one but don't quote me on the exact week markers, it's been a while since I read it closely.
agreed, if there were a clean population-level week-4 dip it'd be a much bigger deal in the discontinuation literature than it is
citation or it's vibes, and right now this whole thread is mostly vibes with good faith behind them, which I'm fine with as a discussion but flagging it
fair, my "lag" comment above is more mechanistic plausibility than a specific citation, want to be clear about that distinction
one person is not a study, one hundred people complaining about the same week on a forum is also not a study, but it is a pattern worth explaining somehow
if anyone's ever tempted to actually meta-analyse forum "week 4" posts, please account for selection bias, people who stalled and quit quietly never post the followup
identity vs quantity distinction feels relevant here too, "is the wall real" and "how big is the wall" are two different questions and this thread's mostly answered the first one