EPISODE 44: The Missing Link Between GLP-1 Precision Dosing, Circadian Rhythm & Gut Health with Dr. Melissa Petersen

Welcome back to the Peptides for Women podcast!

In this episode, I’m joined by Dr. Melissa Petersen, founder and CEO of Human Longevity Global and president of Peptide University. She’s a global authority in longevity medicine and metabolic innovation, and fun fact, she’s also the practitioner who originally introduced me to peptides years ago! So this conversation feels like a full-circle moment, diving even deeper into the science, strategy, and philosophy behind these powerful tools.

We explore how peptides and GLP-1s actually work in the body, why precision dosing matters more than ever, and the biggest mistakes both clinicians and patients are making right now. Plus, we get into the often-overlooked foundations: circadian rhythm, nervous system regulation, and metabolic inputs, that ultimately determine whether peptides work… or don’t.

In this episode, we cover:

• The origin story behind Human Longevity Institute and Peptide University
• What peptides actually are (and why thinking in “molecules” changes everything)
• GLP-1s explained: why they’re revolutionary—and where things are going wrong
• Precision dosing vs. standard dosing (and why “less is more”)
• The real reason GLP-1 side effects happen and how to avoid them
• Foundational gut support before starting peptides (enzymes, nutrients, hydration)
• Simple, budget-friendly ways to improve digestion and metabolic health
• Circadian rhythm as the missing link in weight loss, sleep, and hormone balance
• Why timing (when you eat, sleep, and move) matters more than what you do
• The impact of light exposure, nervous system regulation, and daily inputs
• Why peptides “stop working” and what’s actually happening in the body
• The BioHealthSpan framework: inputs → terrain → targeted interventions → amplification
• How to think about health as a system, not a quick fix

Connect with Dr. Melissa Petersen!

• Website: ⁠⁠⁠https://docmelissa.com/
• Peptide University: https://mypeptideuniversity.com/
• Human Longevity Institute: https://humanlongevityinstitute.com/
• Instagram: ⁠⁠⁠https://www.instagram.com/drmelissagp/

Links & Resources:

• 🔗 Learn more at: ⁠⁠⁠⁠⁠⁠⁠⁠elliemd.com/JenniferWoodwardNutrition⁠⁠⁠⁠⁠⁠⁠⁠
• 🎯 Take my free peptide quiz and get a personalized, midlife-smart roadmap for the peptides that actually match your symptoms and goals: ⁠https://quiz.jenniferwoodwardnutrition.com/peptide-quiz
• 🎓 Enroll in the Peptides for Practitioners Certification Course and get $100 off for podcast subscribers: ⁠⁠⁠⁠⁠https://www.carrotsncake.com/offers/TrVo7mCz?coupon_code=PFPJENNIFER⁠⁠⁠⁠⁠
• 🧬 Want to pair GLP-1s with functional lab testing? ⁠⁠⁠⁠⁠https://learn.jenniferwoodwardnutrition.com/invitation⁠⁠⁠⁠⁠
• 📩 Grab The Body Edit Guide here for full protocols, labs, and more: ⁠⁠⁠⁠⁠https://stan.store/jenniferwoodwardnutrition/p/get-the-body-edit⁠⁠⁠⁠⁠

‼️Disclaimer‼️

This podcast is for informational purposes only and does not provide medical advice. Always speak with your licensed healthcare provider before starting or changing any medication or treatment plan.