Will I lose muscle?
Also asked: muscle loss, protein, sarcopenia, losing strength, how much protein should I eat Answer: Some of the weight you lose will be lean mass. That happens with any rapid weight loss, not just with GLP-1s.
Two things help reduce muscle loss while taking these medications: getting enough protein and doing resistance training two to three times per week.
If your appetite has decreased so much that you're eating very little or struggling to meet your protein needs, let your provider know. Undereating is a real risk while taking GLP-1 medications, and your provider may recommend adjustments to your nutrition plan or treatment to help ensure you're meeting your nutritional needs.
Escalate: if intake sounds very low or they mention not eating.