🧭 GLP-1 Navigator

Nutrition Guide for GLP-1 Users

Proper nutrition matters more on a GLP-1 medication, not less. These drugs work partly by reducing appetite — which means the food you do eat has to carry more nutritional weight. Getting enough protein is the difference between losing fat and losing muscle along with it.

Why protein matters on GLP-1s

When you lose weight quickly, your body does not exclusively burn fat. Without enough dietary protein and a stimulus to keep muscle, a meaningful share of the loss can come from lean tissue. Adequate protein helps:

• Preserve muscle mass: maintaining strength, mobility and resting metabolism during weight loss
• Increase satiety: protein is the most filling macronutrient, which complements the medication rather than fighting it
• Support recovery: tissue repair after exercise, especially resistance training
• Prevent deficiency: when total intake falls, protein is the first thing that tends to fall short

Protein recommendations

General guidelines used for adults losing weight:

• Minimum: 0.8 g per kg body weight — the baseline RDA, set to prevent deficiency rather than to preserve muscle during weight loss
• Recommended during weight loss: 1.2–1.6 g per kg of ideal body weight
• Active or training regularly: 1.6–2.0 g per kg body weight
• Older adults (65+): 1.2–1.5 g per kg, since older muscle responds less efficiently to dietary protein

If you would rather not do the arithmetic, our protein calculator turns your weight, activity level and medication into a single daily gram target.

High-protein foods for GLP-1 users

Smaller appetite means every serving has to earn its place. These options deliver protein without large volume:

Protein values are approximate and vary by brand, cut and preparation. Check the label on what you actually buy.

Spreading protein through the day

Total daily protein matters most, but distribution helps — particularly when appetite is unpredictable. Three servings of roughly 25–35 g are usually easier to manage than one large protein-heavy meal, and a smaller appetite makes that large meal unlikely anyway. If mornings are when you feel most able to eat, front-load protein then rather than assuming dinner will cover it.

Hydration

Fluid intake is the most commonly neglected piece, and it connects to several of the side effects below. Reduced appetite tends to reduce drinking as well, and a good deal of daily water normally arrives via food. Aim for steady intake through the day rather than large amounts at once, which can crowd out an already limited appetite. Persistent vomiting or diarrhoea raises the stakes considerably — that is the situation in which dehydration becomes a genuine medical issue rather than an inconvenience.

Managing side effects through nutrition

Common GLP-1 side effects and the dietary strategies that tend to help:

• Nausea: eat smaller, more frequent meals; avoid high-fat and fried foods; keep fluids up; eat slowly and stop at the first sign of fullness. Cold or room-temperature foods often smell less strongly and are better tolerated.
• Vomiting: focus on bland, easy-to-digest foods; consider oral rehydration solutions; avoid strong smells. Persistent vomiting warrants a call to your provider rather than dietary tinkering.
• Constipation: increase fibre gradually, drink plenty of water, include prunes or kiwi, and stay physically active. Increasing fibre without increasing fluid usually makes constipation worse.
• Diarrhoea: bland, low-fibre foods such as bananas, rice, applesauce and toast; temporarily reduce caffeine and dairy.
• Heartburn and reflux: avoid trigger foods, keep meals small, and stay upright for a while after eating rather than lying down.
• Food aversions: many people find specific foods — often meat or anything greasy — become unappealing. Work with the aversion rather than against it; dairy, eggs, fish, legumes or a shake can cover protein when meat will not go down.

A realistic day of eating

An illustration of how roughly 100 g of protein can fit into a genuinely reduced appetite — not a prescription, just a shape:

• Breakfast: Greek yogurt with berries — around 20 g
• Lunch: a modest portion of chicken with vegetables — around 30 g
• Afternoon: cottage cheese, or a shake if solid food is unappealing — around 20 g
• Dinner: salmon or lentils with a vegetable — around 25 g
• Throughout: water at regular intervals rather than in large amounts at once

Portions are smaller than they look on paper. On days when even this is too much, prioritise the protein and let the rest go — one imperfect day does not undo the pattern.