High Protein Foods To Eat on GLP-1 Medications

Following a GLP-1 diet means making every bite count. GLP-1 stands for glucagon-like peptide-1, a hormone produced in your gut to help regulate blood sugar by increasing insulin secretion, slowing down how quickly your stomach empties, and signaling your brain that you are full. GLP-1 receptor agonists (such as Ozempic, Wegovy, Mounjaro, and Zepbound) mimic the effects of this hormone and significantly reduce appetite.^[1]

If you are eating significantly less, the calories you do consume need to work harder. Prioritizing GLP-1 protein — high-quality, nutrient-dense protein sources — helps maximize the medication's effectiveness, minimize side effects, and protect muscle mass during weight loss. This GLP-1 diet guide walks you through the best foods to focus on, starting with protein.

GLP-1 protein: Why it's your #1 priority on a GLP-1 diet

Understanding muscle loss on GLP-1 medications. GLP-1 medications work by suppressing appetite — but the body does not selectively burn fat when it is in a significant caloric deficit. Long-term clinical indicates that up to 40% of the weight lost on high-efficacy GLP-1 medications is not fat, but lean body mass.^[2] This matters because muscle is essential for metabolic rate, blood sugar regulation, balance, and mobility — and significant muscle loss can offset many of the cardiometabolic benefits of weight loss. The rapid pace of GLP-1-driven weight loss amplifies this risk compared to traditional diet-alone approaches.^[3],[4]

A special concern for older adults. The stakes are even higher for adults over 60. Sarcopenia — age-related muscle loss — already progresses at 0.1–0.5% per year after age 30 and accelerates after 65.^[5] GLP-1-induced loss layered on top can push older patients past a critical functional threshold, raising the risk of falls, fractures, and frailty.^[6] Adults over 60 should prioritize protein intake and resistance training as parts of their GLP-1 treatment plan.

How much protein do you need? A joint advisory from major U.S. medical and nutrition societies recommends aiming for 80–120 grams of protein per day, or roughly 1.0–1.6 grams per kilogram of body weight during active weight reduction.^[7] For older adults, some experts recommend targeting the higher end of that range — 1.2–1.5 grams per kilogram — given the compounded risk of age-related and medication-related muscle loss.^[8] Because appetite is suppressed on these medications, try eating protein first at each meal before filling up on vegetables or grains, and aim for 20–40 grams of protein per meal to distribute muscle-preserving stimulus throughout the day.^[9]

Photo credit: Push ups by Direct Media

Seafood and the GLP-1 diet

Seafood is widely regarded as one of the best protein sources for people on GLP-1 medications. Frozen seafood is flash-frozen at peak freshness, locking in nutrients, and it is nutrient-dense without being calorie-dense,^[10] which matters enormously when you're eating less on a GLP-1 diet. Even a small portion delivers high-quality complete protein alongside key micronutrients — vitamin B12, vitamin D, iron, and iodine — that are easy to fall short on when appetite is suppressed.^[11]

The U.S. Department of Agriculture has an online database for the public that provides nutritional values for a variety of foods - a good source of information for individual species of seafood.^[12]

Photo credit: Grilled salmon by Prayitno

Seafood also aligns naturally with the Mediterranean dietary pattern — one of the most evidence-backed diets for heart health and metabolic health.^[18] Aim for 2–3 servings of seafood per week to reach your high-quality protein goals.

Other Top Lean Protein Sources

Beyond seafood, a joint medical advisory specifically recommends the following protein sources for GLP-1 users:^[19]

• Poultry: Skinless chicken and turkey breast are lean, versatile, and easy to batch-cook for the week.
• Eggs: Complete protein with B12 and choline; hard-boiled eggs are an easy grab-and-go option.^[20]
• Low-fat dairy: Greek yogurt and cottage cheese pack 15–20g of protein per serving and are gentle on digestion.
• Plant-based proteins: Beans, lentils, peas, tofu, and tempeh contribute both protein and fiber — a dual benefit for GLP-1 users.^[21]
• Protein shakes/powders: A convenient option when appetite is very low and solid food feels unappealing.^[22]

Fiber-rich foods — ease in gradually. Fiber supports digestion, blood sugar regulation and can boost the body's own GLP-1 production, but high-fiber foods can worsen GI side effects for some people. Start with gentler sources such as oatmeal, bananas, zucchini, or cooked vegetables, then gradually work up to raw vegetables and beans.^[23]

Non-Starchy Vegetables & Low-Sugar Fruit. Favor lower-carbohydrate produce such as berries, tomatoes, lettuce, broccoli, carrots, and bell peppers over starchy options like potatoes, corn, ripe bananas, and mangoes.

Healthy Fats (in Moderation). Avocados, nuts, seeds, and olive oil provide healthy fats that support brain health. Keep portions moderate — large amounts of fat can slow digestion and worsen nausea.

Whole Grains. Whole grains such as oats, brown rice, and quinoa are high in fiber, which helps regulate blood sugar and improve digestion.

Hydration. Dehydration is common when appetite is suppressed. Aim for 2–3 liters of water or sugar-free fluids daily; water-rich foods like cucumbers, soups, and melons count too.^[24]

Foods to Limit or Avoid

• Sugary foods and beverages (juice, soda, candy, desserts)
• Refined carbohydrates and white bread
• Red and processed meats — best minimized on GLP-1 therapy.
• Alcohol (empty calories that displace protein and water)
• Carbonated beverages (can worsen bloating)
• High-fat, fried, or spicy foods (can intensify nausea).

References