What to Cook When They Can Only Eat a Little?
A partner's guide to protein on GLP-1 medications
This one isn't for the person taking the medication. It's for you — the one standing in the kitchen at 6pm wondering why you bothered.
You made the thing they used to love. They ate four bites and put the fork down. You're not imagining it, you didn't do anything wrong, and no, they're not being difficult.
Here's what's actually happening, and what to do about it.
The problem in one sentence
They need more protein than they used to, and they can eat a fraction of what they used to.
The number most professional guidance lands on is 80 to 120 grams of protein a day while someone is actively losing weight. That's not a small amount. And these medications work partly by slowing the stomach down and switching off hunger — so the window where food is welcome is short, and it closes fast.
Which means volume is now your enemy. Every bite has to carry more than it used to.
Three things that change how you cook
1. Density beats portion size. A big plate is now a source of stress, not comfort. A small plate that happens to hold 30 grams of protein is a win. Serve less, make it count.
2. Fat slows the stomach down even further. This is the hard one, because rich food is how most of us show love. The creamy pasta, the cheese sauce, the slow-cooked thing in butter — on a bad day, that's the meal most likely to come back up. Save it for a good day. Lean protein on a rough day.
3. Drinks fill them up. A glass of water with dinner can take up the room the protein needed. Push fluids between meals instead — which matters anyway, because these medications cause constipation and dehydration makes it worse.
Cook once, plate twice
The single biggest thing you can change: stop cooking two meals.
Cook one lean protein and one or two sides, then plate three ounces for them and six for you. Nobody is on a special diet. Nobody is being catered to. It's the same dinner, in different amounts — and that removes a whole layer of guilt from the table.
Whatever they don't eat becomes tomorrow's breakfast, which brings us to the part that matters most.
Start with breakfast
If you change one meal, change this one.
Almost everyone on these medications does fine at dinner and gets close to nothing before noon. That's the pattern I see most often in clinic, and it's also the easiest one to fix — a breakfast that hits 25 to 30 grams is the cheapest 30 grams of the day.
Three that work, none of which take more than five minutes:
Cottage cheese bowl — 1 cup low-fat cottage cheese, berries, cinnamon. About 25 g. Cold, no cooking, and it keeps in the fridge.
Eggs plus a yogurt — 2 scrambled eggs alongside a single-serve plain Greek yogurt. About 27 g. Three large eggs on their own only get you 19 grams, which is the thing that surprises everybody.
Overnight oats, built up — ½ cup rolled oats, ¾ cup milk, a scoop of protein powder, a spoon of chia. About 30 g, and you make it the night before, which matters when mornings are the bad part.
On a low-appetite day
Small volume, high density. These are for the days when half a cup is all that's happening.
Greek yogurt whipped with half a scoop of protein powder and cocoa. About 25 g in roughly half a cup. Eats like dessert.
Egg drop soup with an extra egg and a little shredded chicken. Two eggs and two ounces of chicken is about 29 g. Warm, thin, almost no fat.
Cottage cheese with a scrambled egg stirred through it. One bowl, about 30 g, thirty seconds of effort.
On a nausea day
The rule here is dry, bland, cold, low-fat. Warm food gives off smell, and smell is a common trigger. Cold food from the fridge is much easier to face.
Chilled cooked shrimp with lemon. 3 oz is about 20 g. No fat, no smell, no cooking at the moment you need to eat.
Sliced deli turkey with plain crackers. 2 oz is about 12 g. Dry and boring on purpose.
Plain Greek yogurt or skyr, straight from the fridge. About 15 to 20 g.
Cold poached chicken, sliced thin. Make it on a good day, eat it on a bad one.
And the quiet one: on a genuinely bad day, protein in a glass counts. A ready-made shake is not a failure.
Four recipes worth actually making
Everything above is assembly. These four are worth cooking — and three of them are designed to be made on a good day and eaten on a bad one, which is the whole trick.
1. Protein overnight oats
Serves 1 · about 35 g protein · 5 minutes the night before
½ cup rolled oats
¾ cup milk or unsweetened soy milk
1 scoop vanilla protein powder
1 tbsp chia seeds
½ cup berries
Stir the oats, milk, protein powder and chia together in a jar until there are no dry pockets. Lid on, fridge overnight. Add the berries in the morning.
One honest note: this makes a generous cup and a bit, which is a lot of volume for someone with a small appetite. On a rough morning, make it in two small jars and let them eat one.
2. Two-minute protein mousse
Serves 1 · about 27 g protein · no cooking
1 single-serve (5.3 oz) plain Greek yogurt
½ scoop chocolate or vanilla protein powder
1 tsp unsweetened cocoa powder
A splash of milk to loosen
Whisk everything together until smooth. Eat cold.
This is the highest protein per spoonful in the whole post — about 27 grams in half a cup. It's the one to reach for on a day when nothing sounds good, because it eats like dessert and asks almost nothing of the stomach.
3. Chilled lemon shrimp
Serves 4 · about 25 g protein per serving · 10 minutes, then chill
1 lb cooked peeled shrimp, thawed if frozen
Juice of 1 lemon
1 tbsp olive oil (leave it out entirely on a nausea week)
Salt, and chopped dill or parsley
Toss everything in a bowl, cover, and chill for at least 30 minutes. Keeps 3 days in the fridge.
Make this on a Sunday. Cold, no smell, almost no fat, and already sitting in the fridge at the exact moment they can face food — which is usually not the moment you'd want to start cooking.
4. Sheet-pan lemon chicken and green beans
Serves 4, or 2 dinners plus 2 breakfasts · about 26 g protein per 3 oz of chicken · 30 minutes
1½ lb boneless skinless chicken breasts
1 lb green beans, trimmed
1 tbsp olive oil
1 lemon, sliced
Salt, pepper, garlic powder
Heat the oven to 425°F. Toss the green beans with the oil, salt and pepper on a sheet pan. Nestle the chicken among them, season, and lay the lemon slices on top. Roast 20 to 25 minutes, until the chicken reaches 165°F at the thickest point. Rest 5 minutes before slicing.
This is the cook-once-plate-twice dinner. Three ounces on their plate, six on yours, same pan. Then slice the leftover chicken cold and it becomes tomorrow's nausea-day breakfast, which is the best thing a dinner can do for you right now.
A protein cheat sheet for the fridge door
Food | Amount | Protein |
Chicken breast, cooked | 3–4 oz | 25–35 g |
Shrimp, cooked | 3 oz | ~20 g |
Canned tuna | 3 oz | ~20 g |
White fish (cod, haddock) | 3 oz | ~19 g |
Cottage cheese, low-fat | 1 cup | ~25 g |
Greek yogurt, plain | 1 cup | ~20 g |
Greek yogurt, single-serve | 5.3 oz | ~15 g |
Ricotta, part-skim | ½ cup | ~14 g |
Deli turkey | 2 oz | ~12 g |
Eggs | 2 large | ~12 g |
Lentils, cooked | ½ cup | ~9 g |
Milk | 1 cup | ~8 g |
Cheddar | 1 oz | ~7 g |
Protein powders and yogurts vary a lot between brands — the label wins over any chart, including this one.
Eggs are the one worth knowing by size, because "three eggs" can mean quite different things:
Egg size | Shell-free weight | Protein each | Three of them |
Medium | 44 g | 5.5 g | 16.5 g |
Large | 50 g | 6.3 g | 19 g |
Extra large | 56 g | 7.0 g | 21 g |
Jumbo | 63 g | 7.9 g | 24 g |
Frying concentrates it slightly — three large fried eggs come in nearer 20 g than 19. Across every size and method, three eggs lands somewhere between 17 and 24 grams, and all of it is short of a 30–40 gram meal.
The part that isn't about food
You can do everything above and still have dinners that go badly. So:
Ask "is today a good day or a small day?" before you start cooking. It gives them a way to tell you without it becoming a negotiation, and it gives you five minutes to change the plan.
Don't say "you have to eat something." They know. Their body is telling them otherwise, loudly, and the pressure makes the nausea worse, not better.
Don't say "but you used to love this." It lands as an accusation even when it isn't one.
An unfinished plate is not a review of your cooking. This is the one that quietly does the most damage over months. It's a drug doing exactly what it was prescribed to do.
Keep the leftovers. Appetite on these medications is unpredictable day to day. Something good and high-protein already sitting in the fridge is worth more than a perfect meal at the wrong moment.
Two things I have to say as a dietitian
Protein on its own doesn't protect muscle. The same guidance that gives the 80-to-120-gram number is clear that it only works alongside strength training — at least three sessions a week, plus 150 minutes a week of moderate activity. Brisk walking counts.
And your own number depends on more than your weight. If you have kidney disease, this is a different conversation entirely, and one to have with your own clinician before you change anything. Treat everything here as a ballpark, not a prescription.
If you want help building this around your actual week
This is what I do. I work with people on GLP-1 medications and — just as often — with their partners, because nobody explains any of this to the person doing the cooking.
[Book a visit with me →] https://book.carepatron.com/PerformanceRX-Nutrition---Fitness/Ting-An-?p=WnoCXe5hQf.VPbjYcPXNWw&s=0wRyNeBP&i=tnS4yBNm
Sources
Mozaffarian D, Agarwal M, Aggarwal M, et al. Nutritional priorities to support GLP-1 therapy for obesity: a joint advisory from the American College of Lifestyle Medicine, the American Society for Nutrition, the Obesity Medicine Association, and The Obesity Society. Obesity Pillars. 2025;15:100181.
Spreckley M, Ruggiero CF, Brown A. Bridging the nutrition guidance gap for GLP-1 receptor agonist therapy assisted weight loss: lessons from bariatric surgery. International Journal of Obesity. 2025.
Protein values from USDA FoodData Central.
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