What to Eat on GLP-1: Your Complete Nutrition Guide

GLP-1 medications dramatically reduce appetite, but that doesn't mean you can eat anything and get great results. What you choose to eat on the smaller amounts you're consuming becomes more important than ever. This guide gives you a practical, science-backed framework for nutrition on GLP-1 therapy.

The Most Important Goal: Preserve Muscle Mass

When you lose weight rapidly on GLP-1, your body will lose both fat and muscle if you don't prioritize protein. Muscle loss reduces your metabolic rate, making weight regain more likely when you eventually taper or stop the medication. Your primary nutritional focus should be adequate protein intake.

• Target: 1.0-1.2g of protein per kg of body weight per day
• If you weigh 90kg, aim for 90-108g protein daily
• Spread protein across all meals — don't try to get it all at once
• Pair protein with resistance exercise for maximum muscle preservation

Best Protein Sources on GLP-1

Because you're eating less, each bite of protein needs to count:

• Greek yogurt (plain, 0% or 2%): 17-20g per 200g serving
• Chicken breast (cooked): 31g per 100g
• Eggs: 6g each, and very gentle on the stomach
• Cottage cheese: 25g per 200g, easy to eat when not hungry
• Protein shakes: useful for days when eating feels difficult
• Canned fish (tuna, salmon): convenient, high protein-to-calorie ratio

Foods to Eat More Of

• Lean proteins (chicken, turkey, fish, eggs, legumes)
• Non-starchy vegetables (they're filling, nutritious, and gentle on the stomach)
• Whole grains in small portions (oats, brown rice, quinoa)
• Low-glycemic fruits (berries, apples, pears)
• Healthy fats in moderation (avocado, olive oil, nuts)

Foods That Worsen Side Effects

GLP-1 already slows gastric emptying. These foods slow it even further and are common triggers for nausea and vomiting:

• High-fat foods: fried chicken, bacon, heavy cream sauces, full-fat cheese
• Highly processed foods: chips, pastries, fast food
• Sugary drinks and desserts
• Carbonated beverages (bloating is amplified on GLP-1)
• Alcohol (can cause unpredictable blood sugar effects)

Meal Structure: Smaller, More Frequent

Eating 4-5 smaller meals rather than 2-3 large ones is often more comfortable on GLP-1. Your stomach empties slowly, so large meals can cause overfilling and nausea that lasts for hours.

Hydration Is Non-Negotiable

Many GLP-1 users don't feel thirsty because their appetite signals are dampened. Set a reminder to drink water regularly — aim for at least 8 glasses (2 liters) daily. Dehydration makes every side effect worse and significantly impairs weight loss.

When You Can Barely Eat Anything

During peak nausea phases (typically the first week after each dose increase), some patients can barely eat. In these periods, prioritize:

• Fluids above all else — stay hydrated
• Small amounts of protein first
• Bland, easy-to-digest foods: crackers, toast, rice, banana
• Ginger in any form (tea, ginger ale, ginger chews) for nausea
• Electrolyte drinks if vomiting is significant

A few days of minimal eating during a difficult week is okay. What matters is the long-term pattern, not any single day. Focus on staying hydrated and getting some protein, and return to your normal plan as soon as you feel better.