What Are Peptide Hormones?

Peptide hormones are synthesized in endocrine glands and released into the bloodstream, where they regulate essential biological processes. Unlike fat-soluble steroid hormones, peptide hormones are water-soluble and act quickly by binding to cell surface receptors, triggering intracellular signaling pathways.

Functions of Peptide Hormones

Peptide hormones influence a wide range of bodily functions, including:

• Growth & Tissue Repair – Growth hormone (GH) supports cell regeneration and development.

• Metabolism Regulation – Insulin helps maintain blood sugar balance, while glucagon prevents dangerously low glucose levels.

• Reproductive Health – Luteinizing hormone (LH) and follicle-stimulating hormone (FSH) play a role in fertility and hormonal cycles.

• Fluid & Electrolyte Balance – Antidiuretic hormone (ADH) regulates water retention in the kidneys.

• Stress Response – Corticotropin-releasing hormone (CRH) initiates the body’s reaction to stress.

Key Peptide Hormones & Their Roles

• Insulin – Lowers blood glucose by facilitating sugar uptake into cells.

• Glucagon – Works opposite to insulin, increasing blood sugar when necessary.

• Growth Hormone (GH) – Stimulates growth, muscle development, and tissue repair.

• Oxytocin – Plays a role in childbirth, lactation, and emotional bonding.

• Antidiuretic Hormone (ADH) – Helps regulate hydration and kidney function.

• Thyrotropin-Releasing Hormone (TRH) – Stimulates thyroid hormone production for metabolism regulation.

How Peptide Hormones Work

Peptide hormones interact with G-protein-coupled receptors (GPCRs) or receptor tyrosine kinases (RTKs) on the surface of target cells. Once bound, they trigger intracellular signaling cascades that alter gene expression, enzyme activity, or cellular function to maintain homeostasis.

Optimizing Hormonal Health at IHNJ

Peptide hormones play an essential role in maintaining energy levels, immune function, and overall well-being. At IHNJ, we offer advanced hormonal assessments and personalized treatment plans to address imbalances and optimize health.

Ready to improve your hormonal balance? Schedule a consultation today.