Endocrine Terms：GH & GLP-1?
Growth Hormone Axis
Section titled “Growth Hormone Axis”Growth hormone (GH, Hormone)
Section titled “Growth hormone (GH, Hormone)”A pituitary hormone secreted in pulses; pulse amplitude is greatest in early deep sleep.
Insulin-like growth factor 1 (IGF-1, Growth factor)
Section titled “Insulin-like growth factor 1 (IGF-1, Growth factor)”A downstream mediator of GH, related to growth, recovery, and body composition.
Growth hormone–releasing hormone (GHRH, Hormone)
Section titled “Growth hormone–releasing hormone (GHRH, Hormone)”A hypothalamic hormone that drives GH pulses; analogs such as CJC-1295 take this route.
Growth hormone secretagogue receptor 1a (GHS-R1a, Receptor)
Section titled “Growth hormone secretagogue receptor 1a (GHS-R1a, Receptor)”The ghrelin receptor; the site of action of secretagogues such as Ipamorelin.
Ghrelin (Ghrelin)
Section titled “Ghrelin (Ghrelin)”An appetite-stimulating hormone; GHRP-6 and similar compounds strongly affect this pathway.
Incretins and Blood Glucose
Section titled “Incretins and Blood Glucose”Glucagon-like peptide-1 (GLP-1, Incretin)
Section titled “Glucagon-like peptide-1 (GLP-1, Incretin)”An incretin secreted after eating: promotes insulin, suppresses glucagon, delays gastric emptying, and centrally suppresses appetite.
Glucose-dependent insulinotropic polypeptide (GIP, Incretin)
Section titled “Glucose-dependent insulinotropic polypeptide (GIP, Incretin)”Another incretin; one of the pathways of dual agonists such as Tirzepatide.
Glucagon receptor (GCGR, Receptor)
Section titled “Glucagon receptor (GCGR, Receptor)”Its activation is related to thermogenesis and energy expenditure; a pathway of interest for triple-target drugs.
Amylin (Islet amyloid polypeptide)
Section titled “Amylin (Islet amyloid polypeptide)”Co-secreted with insulin, involved in satiety and glucagon regulation; Cagrilintide is an analog.
Insulin resistance (Metabolic condition)
Section titled “Insulin resistance (Metabolic condition)”Reduced sensitivity of target tissues to insulin, common in abdominal obesity and postprandial drowsiness.
HOMA-IR (Insulin resistance index)
Section titled “HOMA-IR (Insulin resistance index)”An indicator of resistance estimated from fasting glucose and insulin.
Body Composition and Energy
Section titled “Body Composition and Energy”Visceral fat (Body fat)
Section titled “Visceral fat (Body fat)”Fat within the abdominal cavity, more closely related to insulin resistance, inflammation, and cardiovascular risk.
Mitochondria (Organelle)
Section titled “Mitochondria (Organelle)”The organelle that generates ATP; the “workshop” in fatigue and anti-aging discussions.
Nicotinamide adenine dinucleotide (NAD+, Coenzyme)
Section titled “Nicotinamide adenine dinucleotide (NAD+, Coenzyme)”A redox coenzyme that declines with age, related to energy metabolism and anti-aging research.
Resting metabolic rate (RMR, Energy-expenditure metric)
Section titled “Resting metabolic rate (RMR, Energy-expenditure metric)”Energy expenditure in a resting state.
Non-exercise activity thermogenesis (NEAT, Thermogenesis)
Section titled “Non-exercise activity thermogenesis (NEAT, Thermogenesis)”Energy use from daily activities (walking, standing); often underestimated.
Aging-Related
Section titled “Aging-Related”Telomere (Chromosomal structure)
Section titled “Telomere (Chromosomal structure)”The protective structure at chromosome ends, shortening with each division.
Telomerase reverse transcriptase (TERT, Enzyme)
Section titled “Telomerase reverse transcriptase (TERT, Enzyme)”The enzyme subunit that lengthens telomeres; a target of research interest for compounds such as Epithalon.
Senescence (Cellular senescence)
Section titled “Senescence (Cellular senescence)”A state that has lost the ability to divide but still secretes inflammatory factors — the so-called “zombie cells”.
Autophagy (Self-eating)
Section titled “Autophagy (Self-eating)”Cellular self-cleanup and recycling, related to mitochondrial quality control.
Read more: Signaling Pathways
Read more: GLP-1 Mechanisms, Metabolism-Related Peptides, Visceral Fat, Growth Hormone.
Key References
Section titled “Key References”Metabolism review PMID: 36677050.
Further Reading
Section titled “Further Reading”GLP-1 Comparative Review, Metabolism Entries, Visceral Fat, Growth Hormone.
Comparison Table
Section titled “Comparison Table”| Item | Description |
|---|---|
| Mechanism | See above |
| Entries | See blends |
| References | See individual ingredient entries |
Key Takeaways
Section titled “Key Takeaways”Core Mechanisms
Section titled “Core Mechanisms”First understand the pathway and the tissue/metabolic background, then cross-check ingredient entries and practical steps; avoid memorizing brand names alone.
Common Misconceptions
Section titled “Common Misconceptions”Treating a single ingredient as a complete protocol; ignoring underlying factors such as sleep, training, and diet; ignoring batch quality (COA).
Next Steps
Section titled “Next Steps”- Cross-check blends to select relevant mechanisms.
- When you need hands-on steps, see Reconstitution and Storage.
- For cross-page terminology, see the Glossary.
Indicator Quick Reference
Section titled “Indicator Quick Reference”| Term | Clinical / research context | Extension |
|---|---|---|
| HOMA-IR | Resistance estimated from fasting glucose and insulin | Insulin Resistance |
| IGF-1 | Downstream mediator of GH | GH and Aging |
| GLP-1 | Core molecule of the incretin axis | GLP-1 Comparison |
| NEAT | Energy spent on daily activity | Visceral Fat |
Related Reading
Section titled “Related Reading”- Term cross-checks: Signaling, Peptides and Formulation, Nutrient Terms.
- Ingredient entries: Metabolism and Weight Loss, GH Secretagogues, GLP-1 Comparison.
- Scenario entry points: Plateau, HPTA, Deep Sleep.