Peptide therapies, an exciting and evolving class of treatments
- Dr. Sean Cassleman
- Oct 6
- 2 min read

Peptides are short chains of amino acids that act as signaling molecules in the body, with a variety of targets to achieve wellness and metabolic benefits. Peptides like GLP-1 receptor agonists and sermorelin are among the most commonly used and they are well-studied options. With more options emerging and in some cases less evidence it's important to have a trusted doctor guiding you, not selling you. This is where Mission Metabolic Health can be of such great value to patients helping them safely and effectively navigate peptides while taking a global view of their health.
What Are Peptides?
Peptides are naturally occurring, short amino acid sequences that can influence various biological functions. When used therapeutically, they offer targeted support for hormone modulation, weight management, recovery, aesthetic benefit and more—all through mechanisms that aim to mimic the body’s own signaling pathways.
Commonly Used Peptides
GLP-1 Receptor Agonists: These peptides, such as semaglutide, have brought major advances in weight management by reducing appetite, improving fullness, improving glucose regulation, and supporting sustainable weight loss. They are well-established in clinical settings, with both weight loss and diabetic indications.
Sermorelin: As a growth hormone-releasing hormone (GHRH) analog, sermorelin encourages the pituitary gland to naturally release growth hormone. Benefits often reported by patients include increased lean muscle mass, improved fat metabolism, enhanced exercise recovery, boosted energy, and support for healthy aging.
Other Peptides include BPC-157, Thymosin alpha-1, Ipamorelin, CJC-1295, GHK-Cu, TB-500, AOD-9604, Tesamorelin, Follistatin 344, Epitalon, Dihexa, Semax, SS-31, FG Loop FGL, Melanotan II, NAD+, Glutathione, Pentosan Polysulfate.
The Importance of Medical Supervision
Peptide therapies must always be administered as part of a broader, individualized health strategy. Working closely with a qualified physician ensures that treatments are safe, appropriately tailored, and effectively monitored. Self-administered or unregulated peptide therapies come with significant risks, including contamination, dosing errors, adverse interactions, or misuse.
Before beginning peptide therapy, a thorough medical evaluation—including medical history, medication review, and lab tests—is essential. Ongoing monitoring under a professional's care optimizes results and ensures early detection of any side effects. High-quality, pharmacy-sourced peptides drastically reduce the risk of impurities and enhance outcomes. It's important to have a doctor whose incentives align with your health goals.
A Global Approach to Health
Peptide therapies are not standalone solutions, but components of a comprehensive strategy centered on nutrition, physical activity, sleep, and lifestyle management. The best outcomes occur when peptide use is combined with healthy behaviors and ongoing care tailored to each patient’s unique goals and needs.
At Mission Metabolic Health, peptide therapy is offered when clinically appropriate and as part of an integrated plan, ensuring every individual receives science-backed, personalized care with a focus on whole-person wellness. Always consult with your doctor before starting any new treatment to ensure a safe and effective approach. Dr C and the team at MMH are passionate about combining innovative approaches with the foundations of lifestyle and longevity medicine to get you living leaner, longer and better.




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