GLP-1s have taken the health and well being business by storm. It is proving to be probably the most highly effective weight reduction device in historical past, with hundreds of people utilizing some type: Ozempic, WeGovy, or Mounjaro.
Nonetheless, one facet impact has change into abundantly clear: extreme muscle loss. Some individuals need to argue about whether or not you actually lose extra muscle than throughout regular weight reduction.
This misses the purpose as a result of muscle loss isn’t good, whether or not you are on a GLP-1 or not. The great factor is we all know precisely find out how to considerably protect muscle loss, and presumably even construct muscle.
Key Factors You Want To Know!
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What Is A GLP-1?
A GLP-1 refers to a category of medicines that mimics the naturally occurring hormone Glucagon-like peptide-1. Below regular circumstances, GLP-1 is of course launched into the physique after consuming.
After binding to GLP-1 receptors, a cascade of reactions happens:
- Insulin is launched to decrease blood sugar
- Slower gastric emptying
- Satiety elevated
GLP-1 medicines do the identical factor; nonetheless, they have been modified to withstand degradation and preserve these results for longer intervals of time (Holst, 2024).
Take into account that completely different GLP-1 medicine act barely in another way. However for this text, the vital half is the tip impact; GLP-1 therapies lower starvation and cravings, leading to fewer energy eaten and weight reduction.
Nonetheless, some research have urged this weight reduction features a excessive proportion of muscle.
Why Do You Lose Muscle Mass When Taking GLP-1s?
Muscle loss whereas utilizing a GLP-1 comes from being in an excessive caloric deficit with no resistance coaching. That is vital to know, as there is not any particular mechanism in a GLP-1 that causes you to lose muscle mass.
Subsequently, a extra correct query is: why does an excessive caloric deficit trigger muscle loss?
The great factor is we now have a reasonably good understanding. Your physique can solely draw power from three sources:
- Glycogen is saved in your muscle tissues. That is largely related to “carbs”.
- Fatty acids are saved in your adipose tissue
- Amino acids that construct your muscle tissues, i.e., protein
When in a caloric surplus, your physique can pull power out of your saved glucose and fatty acids. Nonetheless, throughout instances of elevated power wants, your physique solely has one different place to get power from.
Your muscle tissues have to be damaged all the way down to launch amino acids that can be utilized to generate extra power.
For this reason pointers for fats loss counsel a small caloric deficit of 300-500 energy for most individuals.
How Can You Protect Or Construct Muscle?
Since muscle loss is attributable to a caloric deficit, on this sense, there’s actually no distinction between preserving muscle throughout a standard caloric deficit. Other than minimizing the deficit, there are three issues you are able to do:
- Observe a resistance coaching program
- Improve protein consumption
- Make sure you get high quality sleep
Resistance Coaching Is Important For Muscle Well being
Resistance coaching might be the best device it’s important to protect muscle mass whereas utilizing a GLP-1 (Lahav et al., 2026). Quite a few research have proven that the distinction in muscle loss throughout caloric deficits is considerably smaller when resistance training is concerned.
This system would not have to be sophisticated, however ought to comply with some easy pointers:
- Use compound workouts to coach the entire physique
- Your program must be progressive in nature. This implies you add weight and work as your progress.
- A large rep vary can be utilized (4-15), however ideally, you employ at the very least some workouts with a great deal of 80-85% 1RM
Increased Protein Consumption Can Protect Muscle Mass
Growing protein consumption has confirmed to be one other essential think about preserving muscle mass whereas in a deficit. Massive meta-analyses have clearly proven that throughout weight reduction, growing one’s protein consumption helps protect muscle mass (Kokura et al., 2024).
Intention to eat at the very least 1.6g per kilogram of physique weight, however consuming 2.0 – 2.5g/kg may yield superior outcomes.
Enough Sleep And Fats Loss
An typically ignored issue for preserving muscle mass is getting adequate sleep. Researchers aren’t precisely positive of the mechanisms, however sleep deprivation has a dramatic impact on muscle breakdown.
Analysis has proven that getting simply 5.5 – 6 hours of sleep whereas in a caloric deficit will increase the proportion of muscle loss in whole weight reduction (Nedeltcheva et al., 2010).
In different phrases, missing sleep appears to place your physique in a catabolic state, and underneath the identical caloric deficit, your physique burns extra muscle.
FAQ: How To Protect And Construct Muscle Mass On GLP-1
1. Are you able to construct muscle whereas taking a GLP-1?
Sure, it’s doable to construct muscle whereas taking a GLP-1, though it will depend on your calorie consumption and coaching standing.
Inexperienced persons, people returning to coaching, and people with larger physique fats might be able to achieve muscle regardless of shedding weight. Progressive resistance coaching, ample protein consumption, and ample restoration are important.
2. Do GLP-1 medicines trigger muscle loss?
GLP-1 medicines don’t immediately trigger muscle loss. Muscle loss primarily happens as a result of the lowered urge for food created by GLP-1s typically results in a big calorie deficit, particularly when mixed with insufficient protein consumption and little or no resistance coaching. The identical muscle loss can happen throughout any aggressive weight-loss weight-reduction plan.
3. How a lot protein do you have to eat whereas taking a GLP-1?
Most individuals taking a GLP-1 ought to devour at the very least 1.6 g of protein per kilogram of physique weight per day.
Throughout weight reduction, growing protein consumption to round 2.0-2.5 g/kg/day could present further advantages for preserving lean muscle mass. Distributing protein throughout a number of meals can also assist maximize muscle protein synthesis.
4. What’s the finest train whereas taking a GLP-1?
Resistance coaching is one of the best kind of train for preserving muscle whereas taking GLP-1. Give attention to a progressive strength-training program constructed round compound workouts carried out at the very least 2-3 instances per week.
Including common strolling or different cardio train can additional assist general well being and weight reduction.
5. How are you going to stop muscle loss whereas taking Ozempic, Wegovy, or Mounjaro?
One of the best ways to stop muscle loss whereas taking a GLP-1 is to mix resistance coaching, a high-protein weight-reduction plan, and ample sleep.
Keep away from excessively massive calorie deficits every time doable, and proceed progressively difficult your muscle tissues all through your weight-loss journey. Collectively, these methods can considerably scale back the quantity of muscle misplaced whereas weight-reduction plan.
Recap: How To Protect Muscle Mass Whereas Utilizing A GLP-1
As you may see, preserving muscle mass whereas utilizing a GLP-1 is precisely the identical as when shedding weight with out one. The first mechanism that promotes muscle catabolism is a calorie deficit, so counteracting these results is identical. Resistance coaching, improve protein, and get loads of sleep.
Reference
- Holst, J. J. (2024). GLP-1 physiology in weight problems and improvement of incretin-based medicine for power weight administration. Nature Metabolism, 6(10), 1866–1885. https://doi.org/10.1038/s42255-024-01113-9
- Kokura, Y., Ueshima, J., Saino, Y., & Maeda, Okay. (2024). Enhanced protein consumption on sustaining muscle mass, energy, and bodily operate in adults with chubby/weight problems: A scientific overview and meta-analysis. Medical vitamin ESPEN, 63, 417–426. https://doi.org/10.1016/j.clnesp.2024.06.030
- Lahav, Y., Yavetz, R., & Gepner, Y. (2026). Resistance coaching as a key technique for high-quality weight reduction in women and men. Frontiers in endocrinology, 16, 1725500. https://doi.org/10.3389/fendo.2025.1725500
- Nedeltcheva, A. V., Kilkus, J. M., Imperial, J., Schoeller, D. A., & Penev, P. D. (2010). Inadequate sleep undermines dietary efforts to scale back adiposity. Annals of inside drugs, 153(7), 435–441. https://doi.org/10.7326/0003-4819-153-7-201010050-00006
