What to Eat on a GLP-1: Simple Meals for a Smaller Appetite
A pharmacist's practical guide to eating well on Mounjaro, Wegovy or another GLP-1: what to prioritise, what to go easy on, and easy meal ideas when your appetite is small.
A GLP-1 medicine shrinks your appetite, but it does not tell you what to do with the appetite you have left. That part matters more than people expect. When you can only eat a little, every meal has to work harder.
There is no official "GLP-1 diet". What follows is the practical version: what to prioritise, what tends to cause trouble, and what a day of eating can look like when you simply are not that hungry.
The one rule: protein first
When your appetite is small, eat the protein on your plate before anything else. Protein protects your muscle while you lose weight, keeps you satisfied longer, and is the nutrient you will run short of first when portions shrink. Aim for a decent portion at every meal. Our protein guide covers the numbers, but the habit matters more than the maths: protein first, then vegetables, then the rest.
What to build meals around
- Lean protein: chicken, turkey, fish, eggs, Greek yoghurt, cottage cheese, tofu, beans and lentils.
- Vegetables and fruit: for fibre, which keeps digestion moving. Cooked vegetables are often easier on a slower stomach than big raw salads.
- Slow carbohydrates in modest portions: oats, wholegrain bread, rice, potatoes. Enough for energy, not so much that there is no room left for protein.
- Fluids between meals: drinking with a full plate fills you up too fast. Sip through the day instead. The hydration guide explains why this matters more on a GLP-1.
What tends to cause trouble
Nothing is banned, but a slower stomach has opinions. The usual offenders:
- Fried and greasy food. Sits heavily and is the most common nausea trigger.
- Very rich or creamy meals. Same reason. Save them for occasions and keep portions small.
- Fizzy drinks in quantity. Gas plus a slow stomach is uncomfortable.
- Alcohol. Hits harder on a small appetite, adds empty calories, and dehydrates you.
- Eating fast, or past the point of comfort. The fullness signal arrives early now. Trust it.
If a food reliably makes you feel rough, log it. Two weeks of notes beats any generic list, because the triggers vary from person to person. Our guide to managing side effects goes deeper on settling nausea.
A day of eating with a small appetite
An example, not a prescription:
- Breakfast: Greek yoghurt with berries and a spoonful of oats, or two eggs on one slice of wholegrain toast.
- Lunch: chicken or lentil soup with bread, or a small tuna and bean salad.
- Snack, if wanted: cottage cheese, a boiled egg, a small handful of nuts, or fruit.
- Dinner: a palm-sized portion of fish or chicken, cooked vegetables, and a few new potatoes or a little rice.
Small, regular meals usually beat one or two big ones. If you notice you have skipped meals because hunger never announced itself, set gentle reminders. Under-eating is the quiet failure mode on a GLP-1: it causes tiredness, muscle loss and misery, and it is entirely avoidable.
Eating out and social meals
Order less than you think you need, start with the protein, and stop when comfortable. A starter portion is often the right size now. Nobody at the table needs an explanation, and a to-go box is not a defeat.
Eat deliberately, log it honestly, and the small appetite becomes an advantage rather than an obstacle.
Sources: NHS Eatwell Guide and the British Dietetic Association.