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News

Does Ozempic Impact Muscle Mass Negatively?

Terry Ramos Writer Profileby Terry Ramos Published on Mar 26, 2025

ozempic weight loss and muscle mass
This post may contain affiliate links (disclosure policy).

Ozempic suppresses your appetite to aid weight loss. 

Ozempic is primarily designed to lower blood sugar by helping the pancreas produce sufficient insulin. Medications like Wegovy, Ozempic, and Mounjaro, which fall under glucagon-like peptide-1 (GLP-1) drugs, are commonly prescribed to help adults with type 2 diabetes manage their blood sugar levels effectively (1).

However, these drugs have recently gained significant popularity for their effectiveness in promoting weight loss. This trend raises an important question: can you maintain muscle mass while using Ozempic? And are there any potential downsides, particularly for lifters and fitness enthusiasts?

Dr. Layne Norton, a PhD in Nutritional Sciences and a two-time IPF World Champion Powerlifter in the 93KG class, offers valuable insights on this topic. Renowned for his meticulous research and expertise in nutrition, bodybuilding, fitness, and health, Norton shared his analysis on his YouTube channel. As the co-founder of Carbon Diet Coach and founder of BioLayne LLC, he explores how Ozempic might negatively impact muscle mass. Dive into his detailed breakdown below.

Overview — What Is Ozempic?

Ozempic is a type of drug used to treat diabetes by lowering blood sugar levels. It can also be used to decrease the risk of heart attack, stroke, or heart disease. When injected under the skin, Ozempic primarily lowers blood sugar in three different ways:

  • It allows the pancreas to make more insulin after eating.
  • It doesn’t allow the liver to release your stored sugars.
  • Ozempic slows down the movement of food stored around your body.

Nowadays, though, Ozempic is an effective weight loss treatment due to its appetite suppressant abilities. Despite its uses, Ozempic can cause many side effects. This is why healthcare professionals administer it in various dosages. It’s essential to contact a licensed healthcare professional before using Ozempic. Some of its side effects include:

  • Constipation
  • Vomiting
  • Nausea
  • Stomach Upsets
  • Dizziness
  • Diarrhea

Severe allergic reactions may result in other side effects, such as increased heart rate, swelling (in the lips, mouth, lymph nodes, face, and tongue), skin rashes, itching, joint pain, fever, and trouble breathing. 

Dr. Norton on Ozempic & Muscle Mass

ozempic and muscle mass

“With GLP-1 mimetics we have, on average, people lose about 15-20% of their body weight, and they keep it off. That is by far the most effective weight loss treatment that we have ever seen.”

— Dr. Layne Norton

Dr. Layne Norton agrees that GLP-1, mimicking medications like Wegovy, Ozempic, and Mounjaro, is effective for weight loss and can reduce muscle mass. He adds that diet and exercise don’t even come close. However, many people don’t intend to follow diet and exercise. So, what tool do we have to reduce the rate of obesity, type 2 diabetes, and the financial burdens on the healthcare system?

Norton says GLP-1 mimetics doesn’t magically strip fat and muscle off you. They also don’t enhance your metabolism. These drugs are simply the most powerful appetite suppressants we have ever encountered (2).

According to Norton, when GLP-1 mimetics first came out, he was concerned about losing lean mass. However, he points out that there’s a difference between lean mass and muscle mass. For example, water, undigested food, intestines, bones, and the brain are categorized as lean mass. All non-fat tissues register as lean mass. Norton also points out that even fat tissue isn’t 100% fat; it has 13% lean mass. So when you lose fat, you should expect to lose some lean mass because some fat tissue has lean mass.

When dieting, losing intestinal mass and water weight is normal because you digest less food. Also, in studies where participants don’t do resistance training, the lean mass people lose during dieting with no exercise tends to be about 25% to 40% of the weight they lose. This is almost identical to how much lean mass is lost in people who use GLP-1 mimetics without exercise. So the key is to strength train to preserve muscle mass, whether on Ozempic or not when losing weight. 

Preserving Muscle Mass

Dr. Layne Norton emphasizes exercising and doing strength training alongside taking the pill. These things don’t have to be binary; you can always combine both. “We should all be exercising, we should all be resistance training,” he explained. “Absolutely, but if somebody is not going to do those things, if they’re just not but we can get them to take a pill where they lose 100 pounds, they’re no longer type two diabetic, we drastically decrease the risk of cardiovascular disease, we drastically decrease the risk of cancer and overall mortality, it’s better for their life, and it decreases the cost on the healthcare system as a whole … These things do not have to be binary. Just eat real food and exercise or just take a pill. Why isn’t there space for both?”

Norton encourages anyone taking the GLP-1 mimetics to do resistance training and eat a high-protein diet. However, he understands that not everyone would do that. Yes, GLP-1 mimetics can curb hunger and are very effective for weight loss. However, combining resistance training with a high-protein diet can help preserve some muscle mass, thereby minimizing muscle loss.     

Other Options: Inno Supps Gut Protect

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Inno Gut Protect

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When it comes to weight loss, Inno Gut Protect could be the supplement that you need! Check it out. 

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Inno Gut Protect may be for you if you want the benefits GLP-1 offers naturally without getting on a prescription drug. Inno Supps’ Inno Gut Protect is a supplement crafted to naturally boost GLP-1 production, helping to curb appetite and support weight loss. Its distinctive blend of probiotics and postbiotics prioritizes gut health, digestion, and mood, providing a comprehensive solution for weight management.

Follow Generation Iron on Instagram, Facebook, and Twitter for more nutrition tips! 

References

  1. Jahagirdar D, Mahood Q; Authors. Semaglutide for Type 2 Diabetes (2 mg): CADTH Health Technology Review [Internet]. Ottawa (ON): Canadian Agency for Drugs and Technologies in Health; 2023 Oct. Available from: https://www.ncbi.nlm.nih.gov/books/NBK598216/
  2. Moiz, A., Filion, K. B., Tsoukas, M. A., Yu, O. H., Peters, T. M., & Eisenberg, M. J. (2025). Mechanisms of GLP-1 Receptor Agonist-Induced Weight Loss: A Review of Central and Peripheral Pathways in Appetite and Energy Regulation. The American journal of medicine, S0002-9343(25)00059-2. Advance online publication. https://doi.org/10.1016/j.amjmed.2025.01.021
Terry Ramos Writer Profile

About Terry Ramos

As a personal trainer and writer, Terry loves changing lives through coaching and the written word. Terry has a B.S. in Kinesiology and is an ACSM Certified Personal Trainer and ISSA Certified Strength and Conditioning Specialist. He enjoys playing music, reading, and watching films when he's not writing or training.

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