Dr. Andrew Mock, Hoag family and preventive medicine specialist with a special interest in longevity, discusses the benefits of and misconceptions about peptide-based medications such as GLP-1 treatments. Most patients ask about peptides for weight loss, muscle building, recovery, injury healing, sexual health, sleep, energy, skin aging, or longevity. In reality, many peptide-based medications are heavily researched, and some are among the most successful modern drug therapies. This is one reason many established peptide medications are given by injection. More compounds, higher doses, or combining multiple experimental peptides does not necessarily improve outcomes and may increase unpredictable risks.