Does loss of muscle mass, commonly associated with Ozempic weight loss, become an issue after regaining the weight? Can it result in proportionally more fat at the same body weight as before if exercise wasn't part of the regiment?

I believe loss of muscle mass is commonly associated with other weight loss methods too. It's not just ozempic. You need protein and exercise no matter how you are losing weight.

_All_ weight loss results in loss of muscle mass unless you do something about it.

If you ingest less calories, you lose both muscle and fat mass.