Our bodies are constantly rebuilding. Every time you move, eat, or rest, your muscles are receiving signals to repair and grow. But sometimes, even when you feel like you’re doing the right things, your body doesn’t respond the way you expect.
This is where anabolic resistance comes in.
Anabolic resistance describes a reduced sensitivity of your muscles to the signals that normally stimulate repair and growth—such as protein intake or movement. In simple terms, your body is still receiving the message, but it doesn’t respond as strongly.
This process becomes more common with aging, but it is not limited to it. It can also occur during periods of inactivity, such as after an injury, surgery, or immobilization. During these times, the body not only becomes less efficient at building muscle, but may also experience increased inflammation, reduced circulation to the muscles, and a gradual decline in muscle quality.
In more severe situations, such as critical illness, muscle loss can happen quickly. This is due to a combination of reduced muscle building and increased muscle breakdown.
The good news is that anabolic resistance is not a fixed state. The body can still respond—it may simply need a clearer or stronger signal.
Nutrition plays an important role here. Eating enough protein (2 to 2.4 gram/kg bodyweight) supports the body’s ability to maintain and rebuild muscle. Spreading protein intake across the day (over 3 to 4 meals) and choosing sources rich in key amino acids, such as leucine (highest concentration in animal products, in lower quantity in soy/nuts/seeds), can make this process more effective. Supplementing with omega-3 fatty acids (fish oil), may also support how the body responds to protein.
Movement remains the most powerful signal for muscle health. Resistance training, in particular, helps “wake up” the muscle and improves its sensitivity to rebuilding.
However, there are moments in life where movement is limited—after an injury, surgery, or during periods of immobilization. In these situations, while you may not be able to fully prevent muscle loss, you can still support your body. By paying attention to your nutrition and giving your body what it needs, you can reduce the extent of muscle loss. This can make a meaningful difference, allowing your recovery to feel smoother and more supported once you are able to move again.
