What to Actually Eat on a GLP-1

Almost every piece of nutritional advice you have absorbed over your life was built for one problem: making you eat less than you want to. Portion control, volume eating, filling up on salad first, the whole apparatus.

These drugs cut intake by 30–50% on their own. That problem has been solved pharmacologically. You are going to eat less whether or not you try. Continuing to follow advice designed to suppress intake, on top of a drug that already suppresses intake, is how people arrive at month 5 at 700 calories a day, exhausted, shedding hair 2–4 months later, and having lost more muscle than fat.

So the question changes completely. Not how do I eat less, but what goes into the very small amount of space I now have.

The one rule

Protein first, at every meal, before anything else on the plate.

Not because protein is magic, but because of the sequence problem. Stomach capacity is now a limited resource. Whatever you eat first gets the space. Left to instinct, most people drift toward soft carbohydrate — toast, crackers, soup, pasta — because it goes down easily and requires nothing of you. Protein is the most satiating macronutrient, which means it is the one you feel least able to face, and therefore the one that quietly disappears.

Target 25–30 g of protein per meal, and 1.2–1.6 g/kg of body weight per day overall. For a 75 kg adult that is roughly 90–120 g daily. The reasoning — that a substantial share of weight lost on these drugs is lean tissue, and protein plus resistance training is what shifts the ratio — is set out in muscle is the whole game.

If you eat nothing else at a meal, eat the protein.

What that looks like on a plate

Roughly 100 g of chicken breast, a tin of tuna, 170 g of Greek yoghurt, three eggs, or 200 g of cottage cheese each land in the 25–30 g range. Knowing four or five of those by heart is more useful than any app.

The mechanical list

These are not forbidden foods and this is not a moral framework. They are the things that cost more than they used to, because your stomach empties more slowly than it used to.

• Fatty and fried food. Fat is the slowest thing to leave the stomach. It is the most reliable trigger for nausea, for reflux, and for the sulfurous burping people describe so vividly.
• Very sweet things. Frequently reported as provoking nausea, and often the first thing to become actively unpleasant.
• Large volumes of liquid with meals. Drinks occupy the space you needed for food. Separate them by about 30 minutes either side, and aim at roughly 2 litres over 24 hours.
• Carbonated drinks. Gas, in a gut where transit is already slow.
• Alcohol. Worsens reflux and nausea, and goes considerably further than it used to — the arithmetic is here.
• Very large single meals. Four or five small ones beat two large ones, for the same reason.

When nothing sounds good

Taste and texture aversion is real, it arrives without warning, and it is one of the more disorienting parts of this. Food you loved becomes actively unpleasant. Meat is the most common casualty, which is unfortunate given the protein target.

What tends to work:

Cold or room temperature. Heat carries smell, and smell is often what triggers the aversion. Cold chicken, tinned fish, yoghurt, cottage cheese.

Simple textures. Smooth or uniform beats mixed. A shake beats a stew.

Two or three defaults you do not have to think about. Decision-making is what fails on a bad day. Have a shelf where the answer already exists.

Rotate before you burn out. If you eat the same yoghurt every morning for three months, you will one day be unable to look at it, and you will have lost your most reliable option.

Unflavoured protein. When everything sweet has become intolerable — a common month-four development — an unflavoured isolate that disappears into soup or oats is the one thing still standing. The protein powder rankings cover that specifically.

The under-eating trap

This deserves naming clearly because the scale rewards it and nobody intervenes.

Somewhere around month three or four, many people settle into eating far too little. It does not feel like restriction — you genuinely are not hungry — and the weight keeps coming off, so it reads as success. What is actually happening is that you are financing rapid loss by burning through lean tissue.

The signs: fatigue that does not lift, hair shedding 2–4 months after the intake dropped, feeling cold, night cramps, poor sleep, cracking strength in the gym, and mood flattening.

Sustained intake below about 1,000 calories, or protein below roughly 60 g a day, is a problem to solve, not a milestone. If you cannot get near the target from food, a shake is not a compromise. It is the tool for exactly this.

Fibre, fluid, and the things that go short

Two more consequences of eating less of everything.

Fibre falls with food volume, which is a major contributor to the constipation that outlasts every other side effect. Food-first where you can — beans, oats, berries, cooked-and-cooled potato — and a poorly fermented supplement if that is not enough, as in the fibre rankings.

Micronutrients fall too. Roughly a fifth of daily water normally arrives inside food, and so do iron, B12, calcium and magnesium. That is the whole argument of the supplement short list, and it is downstream of this page rather than separate from it.

A week that works

Not a meal plan — a structure.

1. Decide protein before anything else, every meal, every day.
2. Eat four or five small times rather than two or three large.
3. Drink between meals, not during, aiming at roughly two litres.
4. Keep two default protein foods in the fridge that require no preparation.
5. Keep a shake for the meal that fails, because one will.
6. Track for 2 weeks at a time, occasionally, to replace an estimate with a measurement.
7. Eat the fat and the carbohydrate you have room for — this is not a low-carbohydrate or low-fat protocol, it is a protein-first one.

And go easy on yourself about the days that do not work. There will be weeks in the titration period when you eat almost nothing and feel wretched, and there will be holidays where you eat normally and gain a pound of water. Neither is the trend. The trend is what you do on the ordinary Tuesdays, and the ordinary Tuesdays are mostly about whether the protein happened.