Losing weight with GLP-1 medications like Ozempic and Wegovy can be a game-changer for people struggling with obesity, but there’s a catch many don’t talk about—muscle loss. Yes, while the number on the scale is going down, a significant amount of that weight could be muscle, not just fat. And that’s a problem.
Doctors and researchers have been studying how much muscle people lose while taking GLP-1 meds, and the numbers are surprising. Studies show that 25% to 39% of the weight lost on these medications can come from fat-free mass—which includes muscle. That’s a lot, especially compared to traditional dieting, where muscle loss is typically around 10% to 30%. To put it in perspective, as we naturally age, we lose about 8% of our muscle per decade after 40. With GLP-1s, some people are losing that much muscle in just a year.
So, why does this matter? Muscle isn’t just for bodybuilders. It plays a crucial role in keeping your metabolism high, supporting your bones, maintainingstrength, and preventing injuries. The less muscle you have, the harder it becomes to stay active, maintain weight loss, and avoid conditions like sarcopenia (severe muscle loss) as you age.
The good news? There are ways to prevent and reduce muscle loss while on GLP-1 medications. Experts recommend two main strategies: eating enough protein and exercising regularly.
Let’s start with protein. Most adults are told to get about 0.8 grams perkilogram of body weight (which is roughly 70 grams for someone who weighs 200 pounds). But research suggests that people losing weight—especially on GLP-1s—need more. Experts recommend 1.1 to 1.6 grams per kilogram, which means that same 200-pound person should aim for 100-140 grams of protein per day.
How do you do that? Make protein the focus of every meal. A good rule of thumb is to aim for 20-40 grams per meal. That could be a 4-ounce chicken breast (35g protein) or a cup of Greek yogurt (20g protein) or a protein shake (25-30g protein)
Spreading protein throughout the day helps stimulate muscle proteinsynthesis, which is how your body builds and repairs muscle.
Now, let’s talk about exercise. Many people think cardio is the key to weight loss, but when you’re on GLP-1 meds, strength training is even moreimportant. Resistance training—like lifting weights or doing bodyweight exercises—helps prevent muscle breakdown and rebuild lost muscle.
Doctors recommend strength training at least 2-3 times per week with 150 minutes of moderate-intensity exercise per week starting with bodyweight exercises (like squats, lunges, and push-ups) before adding weights
Even if you’re new to exercise, you don’t have to jump into heavy liftingright away. Seated resistance exercises, resistance bands, and even simple bodyweight movements can make a big difference.
Another thing to watch out for is rapid weight loss. Some doctors are now adjusting GLP-1 doses more slowly to avoid excessive muscle loss. Instead of increasing the medication every 4 weeks, some doctors wait until the patient hits a plateau before adjusting. This helps prevent losing too much weighttooquickly, which can lead to muscle breakdown, weakness, and even an increased risk of falls.
The biggest mistake people make with GLP-1s? Thinking the medication isenough. Weight loss is about more than just a number on the scale—it’s about preserving muscle, keeping strength, and maintaining long-term health.
If you’re taking a GLP-1 medication, talk to your doctor about how much protein you should be eating daily, a strength-training plan that works for your body and the best strategy for adjusting your dose to avoid rapid muscle loss
Weight loss should improve your **health, energy, and quality of life—**not leave you weaker and at higher risk for injuries. By eating enough protein, lifting some weights, and losing weight at a steady pace, you can get the benefits of GLP-1s without sacrificing muscle and strength.