Most of what’s written about coming off Ozempic, Mounjaro or Wegovy focuses on the scale. What it doesn’t focus on nearly enough is blood sugar — which is strange, because these medications were developed for blood sugar regulation long before they became known for appetite. Semaglutide started life as a treatment for type 2 diabetes. Appetite suppression was, in a sense, a side effect that turned out to be the headline. So when someone stops taking it, it isn’t just hunger that’s recalibrating. Blood sugar regulation is too, and I think that’s the piece that gets lost.
While you’re on one of these medications, insulin release after meals is being supported directly by the drug itself, alongside the slower stomach emptying and reduced appetite. That’s part of how blood sugar tends to run steadier for a lot of people during treatment. When the medication stops, that support stops with it. Not overnight, but over the weeks it takes to clear your system. Meanwhile, appetite is coming back, often faster than your eating pattern has caught up with. That combination — less pharmacological support for insulin release, more food, and a hunger signal that’s still finding its new normal — is exactly the kind of stretch where blood sugar can swing more than it has in months. Not dangerously, for most people. But enough to feel it: energy dips, cravings that seem to come from nowhere, a kind of hunger that doesn’t feel like it existed before you started the medication at all.
I think this is worth knowing not to alarm anyone, but because it reframes what’s happening. If you’ve come off one of these medications and you’re finding the weeks afterwards harder than you expected — hungrier, more preoccupied with food, less steady through the day — that’s not you losing the progress you made. It’s your own regulatory systems, insulin included, picking the job back up after months of extra support. That handover period is real, and it deserves its own plan, not just white-knuckling until it settles.
The other thing worth knowing, because it’s more hopeful than the headlines usually let on, is what the longer-term data actually shows. A year-long follow-up of the semaglutide trial found participants had regained around two-thirds of their lost weight by the twelve-month mark, with blood pressure and other markers moving back towards pre-treatment levels too. But a larger analysis out of Cambridge found the regain doesn’t continue indefinitely for everyone — it tends to plateau, with people keeping off roughly a quarter of what they lost, on average, in the longer term. There’s also a body composition study worth knowing about, which found that around a third of the weight lost during GLP-1 treatment was lean mass rather than fat — muscle, in other words, which is relevant to blood sugar for reasons I’ll come to. The people who do best through the post-medication stretch, from what I see in practice, tend to be the ones who treat it as its own distinct phase — with its own approach to food and movement — rather than assuming the old default will simply hold.
Wilding et al., 2022
So what actually helps, specifically for blood sugar? Some of it you’ll have heard already — protein at meals, regular eating, moving your body most days. All true, all a bit familiar. There’s a piece almost nobody’s talking about in this particular conversation, though, and it’s the one I think matters most.
Insulin sensitivity isn’t flat across the day. It follows its own rhythm — for most people, your body handles glucose most efficiently earlier in the day, and that efficiency drops as the day goes on. Which means the exact same meal can produce a noticeably different blood sugar response at breakfast than it does at dinner. I saw this on my own continuous glucose data years ago, long before I specialised in metabolic health, and it’s part of what pulled me into this side of nutrition in the first place. During the weeks after stopping a GLP-1 medication — when appetite’s unpredictable and your own insulin response is picking the job back up from the drug — when you eat the bulk of your food can matter as much as what’s on the plate.
I’m not going to hand you a generic eating window for this, because it isn’t generic. Where your own sensitivity actually dips through the day is different person to person, and guessing at it isn’t much better than not knowing at all. It’s exactly the kind of pattern a proper look at your own data — through an Audit, or a couple of weeks of glucose monitoring — can actually show you, rather than a list of tips that’s true for everyone in general and precisely tailored to no one.
What that leaves, in general terms:
Protein at meals — still the single most useful lever for satiety and for protecting muscle during this stretch
Regular eating rather than long gaps, so hunger doesn’t arrive in a rush your blood sugar has to absorb all at once
Paying attention to when through the day you’re eating the most, not only what’s on the plate
None of this is about willpower. It’s about giving your own systems the conditions to do what the medication was doing for you — and knowing where your own pattern actually sits, rather than guessing.
I have a free guide, Is Your Blood Sugar Working Against You? Ten Signs Most People Completely Miss, which is a useful place to start spotting your own pattern. And if you’d like a proper conversation about what’s actually going on for you since stopping, including your own rhythm through the day, I’m offering free 30-minute Blood Sugar Audits this month. No obligation, just answers.
Thank you for being here.
See you next week,
Frances x
Frances Norgate
Qualified Nutrition and Lifestyle Advisor
