The Dr. Hyman Show Office Hours: Peptides 101: The Truth About GLP-1, Recovery, and Anti-Aging
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Mar 9, 2026 Peptides as signaling molecules and how they influence metabolism, repair, appetite, and energy. The rise of GLP-1 therapies and their benefits and limits for weight and diabetes. Growth, repair, and longevity peptides under review along with safety and regulation concerns. Why strong foundational habits must come before using peptides and who should approach them with caution.
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Peptides Are Your Body's Messaging System
- Peptides are signaling molecules that act like text messages between cells and regulate metabolism, repair, appetite, and energy.
- Examples include insulin, GLP-1, and growth hormone signaling, which naturally control when the body builds, burns, and repairs.
Check Approval And Source Before Using Peptides
- Be cautious because many peptides on the market are not FDA approved, compounded, or sold as research chemicals with variable quality control.
- Mark Hyman warns long-term safety data is limited and sourcing matters for purity and risk.
GLP-1 Drugs Amplify Appetite Signals Not Muscle
- GLP-1 peptides (like semaglutide) amplify gut-derived signals to reduce appetite, slow gastric emptying, and improve insulin sensitivity.
- They produce dramatic weight loss and metabolic improvements but don't build muscle and weight often returns if lifestyle doesn't change.