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Glucagon-Like Peptide-1 Modulates Testicular Function—Treatment Potential

May 13, 2026

Code to Conception

Daily micro-protocols for the 90-day miracle window

| May 13, 2026 |

🔬 Pre-Bump Biology  

Today’s insight: GLP-1 isn’t just a “weight-loss drug”—it directly talks to your reproductive axis. Human sperm and Leydig cells carry GLP-1 receptors, and activating them improves testosterone, motility, metabolic fuel use, and reduces oxidative stress. When this pathway fires cleanly, you create a healthier cohort of sperm across a full 90-day cycle.

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🧬 Protocol Drop  

Today’s 1-Step Protocol: 

Set a fixed weekly GLP-1RA injection time—same weekday, same hour. Consistency stabilizes plasma levels, which supports steadier LH/Testosterone rhythms and creates the metabolic environment needed for improved sperm morphology and motility over the next 12–24 weeks. (Research-informed, not a prescription.)

📚 Glossary Pop  

GLP-1 Receptor (GLP1R): 

A protein on the surface of cells—including human sperm and Leydig cells—that senses GLP-1. When activated, it triggers cAMP/PKA and PI3K-AKT pathways that upgrade energy metabolism, testosterone production, and sperm movement. Think of it as the “metabolic ignition switch” for male fertility.

Send this to your partner and lock in your shared “fertility hour”—you’ll never miss a dose again.
P.S. Tomorrow Teaser
What happens when completely healthy men receive an 8-hour GLP-1 infusion? A surprising shift in LH/GnRH signaling hints that GLP-1 may modulate the reproductive axis even without obesity or hypogonadism. Tomorrow, we unpack the study that changes the baseline.

Want to learn more?

Aversa, A., Cannarella, R., Calogero, A. E., Condorelli, R. A., & La Vignera, S. (2023). Sexual and reproductive outcomes in obese fertile men with functional hypogonadism after treatment with liraglutide. Journal of Clinical Medicine, 12(2), 672. https://doi.org/10.3390/jcm12020672

De Rose, D., Santoro, M., Guido, C., Morelli, C., Carpino, A., Rago, V. (2020). Human sperm express the receptor for glucagon-like peptide-1 (GLP-1), which affects sperm function and metabolism. Endocrinology, 161(4), bqaa031. https://doi.org/10.1210/endocr/bqaa031

Gregorič, N., Šikonja, J., Janež, A., & Jensterle, M. (2025). Semaglutide improved sperm morphology in obese men with type 2 diabetes mellitus and functional hypogonadism. Diabetes, obesity & metabolism, 27(2), 519–528. https://doi.org/10.1111/dom.16042

Salvio, G., Ciarloni, A., Ambo, N., Bordoni, M., Perrone, M., Rossi, S., & Balercia, G. (2025). Effects of glucagon-like peptide-1 receptor agonists on testicular dysfunction: A systematic review and meta-analysis. Andrology. https://doi.org/10.1111/andr.70022