Coming Off a GLP-1: What to Eat to Keep the Weight Off

GLP-1 medications work on appetite in the brain and slow down how fast your stomach empties. When the drug leaves your body, those effects fade. Semaglutide and tirzepatide are long-acting, so this happens gradually, over weeks, not overnight.

At the same time, your body is defending its old weight:

• Hunger goes up. One analysis estimated that for every kilogram of weight lost, appetite rises by about 100 calories a day. The more you've lost, the stronger the pull.
• Hunger hormones shift. After weight loss, leptin (the "I'm full" signal) drops and ghrelin (the "I'm hungry" signal) rises. In one study, these changes were still there a year later.
• You burn a bit less. A smaller body needs less energy, and metabolism adapts a little on top of that.

The drug was holding all of this back. When it fades, the hunger isn't a lack of willpower. It's biology. You need a plan for it, not guilt.

This is where most articles either scare you or skip the data. Here's what the main studies found, in plain words.

• STEP 1 extension (semaglutide). People who stopped the drug and the lifestyle program regained about two-thirds of the weight they'd lost within one year. On average they were still about 5–6% below their starting weight.
• STEP 4 (semaglutide). After 20 weeks on the drug, people who switched to placebo regained about 7% of their body weight over the next year. Those who stayed on it kept losing.
• SURMOUNT-4 (tirzepatide). After 36 weeks on the drug (about 21% lost on average), people switched to placebo regained about 14% of their body weight over the next year. Those who stayed on it lost another 5.5%. Even so, the placebo group ended up about 10% below where they started.

Two honest things to know about these numbers:

1. 1In these trials, people stopped abruptly, and in STEP 1 the diet and exercise support stopped too. They don't tell us what happens with a slow, planned step-down and solid habits. There's much less research on that.
2. 2These are averages. Some people regained more, some much less.

For many people, obesity is a chronic condition, and staying on treatment long term is a reasonable medical choice, not a failure. Whether you stay, taper or stop, the food habits below help.

1. Protein stays high

Protein is the most filling nutrient, and it protects your muscle. That matters even more once the drug isn't doing the appetite work.

• Target: roughly 1.2–1.6 g per kg of your goal weight per day. For most women that's 80–110 g. Your doctor may give you a different number.
• Per meal: 25–35 g, at breakfast too. A protein breakfast is one of the easiest ways to take the edge off afternoon hunger.

2. Fiber every day

Fiber adds volume, slows digestion and keeps you full longer. It also keeps your gut regular as your eating changes.

• Target: about 25 g a day for most women.
• Sources: vegetables, berries, pears, apples, oats, beans, lentils, whole-grain bread.
• What I do: I take a fiber supplement every morning. It's the simplest habit I have.

3. Strength training, 2–3 times a week

Muscle is your best ally at maintenance. It keeps you strong, helps your body handle food better, and makes your weight easier to hold.

Without medication, training made me hungrier and heavier. With it, training finally worked. Now it's one of the main reasons the weight stays.

4. More volume, same calories

When appetite returns, give it food that fills the stomach without a lot of calories:

• soups and broths;
• big salads and roasted vegetables;
• fruit instead of juice;
• lean protein instead of fried.

5. Regular meals, a plan for the hungry hours

• Eat at roughly the same times. Hunger is easier to handle when it's expected.
• Know your hard hours. For many people it's late afternoon or evening. Have a protein snack ready for exactly then: Greek yogurt, cottage cheese, a boiled egg.
• Don't let yourself get very hungry. That's when "a little something" turns into the whole bag.

6. Keep the sweets, on purpose

A plan with zero treats doesn't last. I eat something sweet after lunch and dinner almost every day. It's planned, it's part of my day, and it doesn't turn into a binge.

Maintenance calories are the amount you can eat and stay at the same weight. On a GLP-1, many people never find out what that number is, because they were eating far below it. Here's a simple way.

Step 1. Get a starting estimate. The Mifflin-St Jeor equation is the most common one:

• Women: 10 × weight (kg) + 6.25 × height (cm) − 5 × age − 161
• Men: same, but +5 instead of −161

Multiply the result by your activity level: about 1.2 if you mostly sit, 1.375 if you're lightly active, 1.55 if you train 3–5 times a week.

Example: a 40-year-old woman, 5'5" (165 cm), 143 lb (65 kg). Her base number is about 1,320 kcal. Lightly active, that's around 1,800 kcal. Training 3–5 times a week, around 2,050 kcal.

Step 2. Add calories back slowly. If you've been eating much less on the drug, don't jump straight to the new number. Add a little at a time, for example 100–150 kcal a day, and watch what happens for a couple of weeks before adding more.

Step 3. Watch the weekly average, not the daily number. Your weight moves every day with salt, water and your cycle. Weigh yourself a few mornings a week and look at the average.

Step 4. Set a range and a plan. Pick a range, say 3–4 lb (1.5–2 kg) around your weight. Decide now what you'll do if you go above it: tighten portions for two weeks, talk to your doctor, or both.

Formulas are a starting point. They can be off by 10% or more for a given person, and after weight loss your real number is often a little lower. Your weekly average tells you the truth.

The National Weight Control Registry follows thousands of people who lost weight and kept it off for years. Most of them keep monitoring themselves in some way: they weigh themselves regularly and keep an eye on what they eat.

That matches my experience. I don't track to judge myself. Tracking is how I stay in tune with my body and my treatment. When something drifts, I see it in a week, not in six months.

The hard part is doing it for years. Weighing chicken and typing grams into an app won't last. In Calorize you just tell Mira what you ate, by voice or text, even from your watch. She logs calories, protein, fat, carbs and fiber, and every week she reviews your eating with you. She'll notice when your protein slips or when your evenings are creeping up. Try Calorize →

Watch for these as your treatment changes:

• you're thinking about food between meals again;
• portions are quietly getting bigger;
• you're hungry an hour after a meal that used to last you all afternoon;
• evening snacking is back.

None of these is a disaster. They're a signal to tighten the basics: protein at every meal, more vegetables, a planned snack, and earlier dinners. If hunger feels out of control, or your weight climbs fast, talk to your doctor. That's useful information for your treatment plan.