Vol. II · i Metabolic 2 min read
Why You’ve Stopped Losing Weight on a GLP-1
Three weeks of a flat scale is not a plateau. It is usually a measurement problem.
Most reported plateaus are not plateaus. Weight is noisy enough that water shifts can hide two weeks of genuine fat loss, so a flat scale over a short window usually means the measurement is too short, not that progress stopped. A real stall is a rate that stays flat long enough for noise to cancel — and the answer to it is rarely a higher dose.
What weight actually measures day to day
Body weight moves with salt intake, carbohydrate intake, training load, sleep quality, bowel timing and the menstrual cycle. Any one of those can swing the number by several pounds in either direction.
Against that background, a fortnight of genuine fat loss can be completely invisible. The scale is not lying, it is simply measuring several things at once and reporting one number for all of them.
Telling a plateau from noise
A true plateau is a rate that has stayed flat across a span long enough for the noise to cancel, measured the same way each time. Most of what patients report as a plateau is shorter than that window.
Weighing daily and reading the weekly average beats weighing once a week, because it gives the variation somewhere to go. Before changing anything, we make sure we are looking at a trend and not at a Tuesday.
Before we change a dose, we make sure we are looking at a trend and not at Tuesday.
The common causes, in the order we check them
Intake drift is first and most common. Portions expand gradually as appetite suppression becomes familiar, and almost nobody notices it happening. A few days of honest recording usually settles the question.
Then protein, which people under-eat on appetite suppression; then sleep, which affects appetite hormones directly; then activity, which quietly falls as weight comes off. Each of those is cheaper and safer to correct than a dose increase.
When a dose change is the answer
Sometimes it genuinely is. A confirmed stall on a dose that once worked, with intake and protein verified and side effects tolerable, is a reasonable case for escalation.
Occasionally the better move is a change of molecule rather than a higher dose of the same one, because the two available mechanisms are not identical. That is a review conversation, made on response rather than preference.
Common questions
How long is a real plateau?
Long enough for water noise to cancel out u2014 meaningfully longer than a week or two, measured under consistent conditions. A few flat days, or even a flat fortnight measured inconsistently, is usually not enough to act on.
Should I increase my dose if I stop losing?
Not as a first move. Intake drift, protein intake, sleep and activity are more common causes and all are cheaper to fix. A dose increase is reasonable once those are verified and the stall is confirmed.
Can your body get used to a GLP-1?
Appetite suppression often feels less dramatic over time as it becomes your new normal, which is different from the drug ceasing to work. Verifying intake honestly is the fastest way to tell the two apart.
Educational — not medical advice.