You cant be like, "I want to eat and exercise in such a way that I only lose fat." It just doesnt do that. Interestingly, there is currently a weight loss drug bimagrumab which going through trials for retention of muscle mass
In fact, the FDA has issued warnings about unverified compounded semaglutide quality
That facility had equipment, trained staff, and regulatory oversight
A study published in the Journal of Medicinal Food had shown that when participants consumed half a grapefruit prior to a meal, compared to grapefruit juice and a placebo, they saw a reduction of two-hour postprandial post-meal glucose levels as well as an overall reduction in insulin resistance
doi: 10.1111/and.14250
Elizabeth Rebello, an anesthesiologist at the University of Texas MD Anderson Cancer Center, was one of the committee members who voted against allowing the four peptides to be compounded, citing unknowns around safety and confusion for the public