The uncomfortable finding first, because pretending otherwise helps nobody: in the trial extensions that followed people after withdrawing GLP-1 medication, a large share of the lost weight came back. In the widely-cited semaglutide extension work, participants regained roughly two-thirds of what they had lost within about a year of stopping, with cardiometabolic markers drifting back towards baseline alongside it.

Before you read on General education. Not medical advice, and not a statement about what will happen to you. Trial averages describe groups, not individuals — and importantly, most trial participants stopped abruptly and without a structured maintenance plan.

Why that number is real but not a verdict

Two things are true at once. The regain signal is genuine and should be planned for. And the studies producing it were not designed to test maintenance — participants came off the drug and were followed. There was no taper protocol, no protein target, no resistance-training programme, no tracking structure.

So the honest reading is: stopping a GLP-1 with nothing in place is very likely to lead to substantial regain. That is a statement about the absence of a plan, not about the impossibility of maintenance. It is also precisely why the taper is worth taking seriously rather than treating as an afterthought.

What is actually pushing back

It helps to know what you are up against, because it is not character.

  • Appetite signalling returns. The pharmacological suppression ends. Hunger and food reward come back — often more insistently than before, at least for a while.
  • A smaller body needs less energy. Straightforward arithmetic: less mass to move and maintain. The intake that now maintains you is genuinely lower than the one you started with.
  • Lost lean mass lowers it further. Which is the whole argument for the protein and training work — it is maintenance insurance bought in advance.
  • Nothing about the environment changed. The food supply, the stress, the sleep debt and the habits are all still there. The medication was doing the work of resisting them.

The levers that hold a result

Ranked roughly by how much they matter relative to the effort:

  1. Muscle you kept. Nothing else on this list compounds the same way. It raises the intake you can maintain on and it makes food more forgiving.
  2. Protein as a permanent habit. Not a phase. Satiety per calorie is the single most useful property of any food when appetite has returned.
  3. A defined meal structure. Decided in advance, not negotiated with yourself at 9pm. Structure beats willpower because it does not deplete.
  4. A monitoring habit with an agreed trigger. A weekly weight trend plus a written line — "if I'm up 3 kg on the 12-week average, I act" — converts a slow drift into a decision.
  5. Sleep and alcohol. Unfashionable, and both measurably affect appetite regulation and how much of your intake lands in the evening.
  6. A relationship with your prescriber that is still open. Maintenance goes better when going back on is a discussable option rather than an admission of failure.

The scenario worth planning for now

Write this down while things are calm, because the version of you who needs it will not be calm:

  • What weight, on a rolling average, means "act"?
  • What does acting mean — first the structure, then what?
  • At what point do you call your prescriber?
  • Under what circumstances would restarting the medication be the right answer rather than a defeat?

That last one matters more than it looks. Obesity is generally treated as a chronic, relapsing condition; for many people long-term medication is a legitimate clinical answer rather than a failure of resolve. Deciding in advance that you are allowed to reach that conclusion — with your prescriber — removes a lot of the shame that otherwise drives people to avoid appointments entirely.

What to keep measuring once you're off

  • Weight, weekly, as a rolling average. Daily numbers are noise; the trend is the signal.
  • Waist, monthly. Catches composition changes the scale hides.
  • Strength on two lifts. The muscle proxy, and the earliest warning that something has slipped.
  • Bloods on the schedule your clinician sets. Whatever was being monitored while you were on it probably still deserves monitoring.
  • How much you are thinking about food. Not a metric anyone charts, and often the first thing to change.
The reframe Nobody expects to keep a language, an instrument, or a physical capability without ongoing practice. Maintenance is the same kind of thing: a set of skills held by repetition. The people who keep a result are not the ones with more willpower — they are the ones who built something to practise before they needed it.
Going deeper The final course module covers maintenance in full: set-point pressure, the trigger-and-response plan written out, and how to have the "should I go back on" conversation well. See what's inside →