What to eat on a GLP-1: a simple daily plate

Short answer: build each small meal around protein, add a fruit or vegetable, then a modest portion of whole grain or starch, and drink water with it. Eat every three to four hours instead of waiting for hunger. That pattern is what a 2025 joint advisory from four US medical societies recommends for people on GLP-1 medications such as semaglutide and tirzepatide.¹

This page is the practical plate. For the reasoning and the full set of numbers, see our guide to what to eat when you're eating less.

Why the plate has to change

People on GLP-1 therapy eat 16% to 39% fewer calories, according to the advisory.¹ Less food means less of everything in it, so the mix on the plate matters more than it did before. The advisory lists iron, calcium, magnesium, zinc, and vitamins A, D, E, K, B1, B12 and C as the nutrients most likely to fall short.¹

The plate, in order

1. Protein, eaten first

For most adults the daily target works out to roughly 20 to 30 g at each of three or four small meals. Eat it before the rest so it is not the part left behind when you feel full. Good small-portion choices: eggs, Greek yogurt, cottage cheese, fish, chicken, tofu, lentils. The right daily total depends on body weight; we work through it in how much protein to eat on a GLP-1.

2. A fruit or vegetable

These supply fiber, potassium and vitamin C in very little space. Cooked vegetables are often easier on a slow stomach than raw. Berries, citrus, peppers, spinach, carrots and tomatoes are all good.

3. A small portion of whole grain or starch

Oats, brown rice, potatoes, whole-grain bread, beans. Half a cup is enough. These carry fiber and B vitamins.

4. A little healthy fat

Olive oil, avocado, nuts, seeds. Keep portions small: the advisory notes that large or high-fat meals are harder to tolerate.¹

5. Water alongside

A glass with each meal and one between meals. See how much water to drink on a GLP-1 for the reference amounts.

What the advisory says to eat more of, and less of

Lean on	Limit
Fruits and vegetables	Refined carbohydrates and added sugars
Whole grains	Sugar-sweetened drinks
Lean protein, fish, eggs, dairy	Red and processed meats
Beans, lentils, nuts, seeds	Fast food, ultra-processed sweets and snacks
Regular small meals at consistent times	Large meals, long gaps, alcohol

Adapted from Table 6 of the joint advisory.¹

Foods that are harder to tolerate, and why

This is a different list from "foods to limit". These are not unhealthy; they are the ones most likely to sit badly when the stomach empties more slowly than it used to.

Fried, greasy and very high-fat meals

Fat is the macronutrient that slows gastric emptying most, and a GLP-1 is already slowing it. Stacking the two is the most reliable way to feel uncomfortable for hours. This is about the size of the fat load in one sitting, not about avoiding fat — olive oil on vegetables is fine, a plate of fried food usually is not.

Large portions of anything

Volume matters as much as content. The same food that is fine at half a cup can be unpleasant at two cups. This is the single most common cause of the "I feel awful after eating" complaint, and it is also the easiest to fix.

Carbonation

Fizzy drinks add gas to a stomach that is already emptying slowly. Some people have no trouble; those who do usually notice quickly.

Spicy food

Not a problem for everyone, but if you are prone to reflux, slower emptying plus spice is a common trigger.

Alcohol

Worth its own paragraph. Alcohol is an irritant on an emptier stomach, it can make an unsettled stomach and reflux worse, and it adds calories without nutrients at a time when every calorie has to carry something. There is also a well-documented pattern of people on these medications simply wanting it less.³ If you drink, the practical advice is less of it, with food, and not on a day you have barely eaten.

Coffee

Usually fine. Black coffee on a very empty stomach can aggravate reflux in people already prone to it, and caffeine is mildly dehydrating at a time when fluid is already low. Neither is a reason to give it up — it is a reason to have it alongside something, not instead of breakfast.

Do these foods make the medication work better?

This gets asked a lot, and it deserves a straight answer: no food makes a GLP-1 medication more effective. The drug does what it does regardless of what is on your plate.

What the plate changes is what the medication's effect is made of, and how you feel while it happens. Protein and resistance training affect how much of what comes off is lean mass.¹ Fibre and fluid affect regularity. Micronutrients affect energy. None of that is the medication working better — it is you arriving at the other end in better shape.

When "eating less" has become too little

There is a point where a small appetite stops being a manageable side effect and becomes a problem worth raising. Signs worth paying attention to:

• Whole days where you eat once, or not at all, repeatedly rather than occasionally.
• Weight coming off much faster than your prescriber expected.
• Fatigue, dizziness, hair shedding or feeling cold — the things that show up when intake has been low for weeks rather than days.
• Strength dropping noticeably: stairs, shopping bags, the gym.
• Not managing a glass of water most of the day.

None of these mean stopping the medication. They mean the dose, the pace, or the eating plan needs a look from the person prescribing it.

A sample day

• Breakfast: Greek yogurt, berries, a spoon of chia seeds.
• Lunch: chicken or tofu, half a cup of lentils, cooked vegetables.
• Snack: cottage cheese and a pear, or a boiled egg and almonds.
• Dinner: baked fish, a small potato, green beans with olive oil.

Roughly 75 to 85 g of protein and more than 20 g of fiber. If even this feels like too much food, the smaller version is in what to eat on a GLP-1 when you're not hungry.

Is this the "GLP-1 diet"?

More or less. There is no official diet with that name; the phrase describes the eating pattern above. We unpack it in what the GLP-1 diet is.

Filling the gaps food leaves

Even a well-built small plate can come up short on a few things. The advisory says supplements can be considered for at-risk nutrients such as vitamin D, calcium and B12, tailored to the person.¹ Our overview of what vitamins to take on a GLP-1 covers which ones and why.

For reference, Zornava Replenish is a powder with electrolytes (sodium, potassium, magnesium, calcium), a prebiotic fiber and a short list of vitamins. It contains no protein, so it does not replace anything on the plate above. The ingredient list is on our ingredients page.