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Drugs that target the GLP-1 and GIP pathways can suppress appetite, potentially leading to a significant caloric deficit.

This can lead to the body to break down muscle tissue to obtain protein for energy which could lead to a loss of lean muscle mass

However, maintaining regular exercise and consuming sufficient protein can help to minimize the impact of lean muscle mass loss



Protein is not what the body reaches for first in the absence of glucose/glycogen.


This is true but it's still extremely well established that you lose some muscle along with fat if you're in a prolonged caloric deficit without sufficient protein and strength training.




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