Testosterone Boosts GH and IGF-1 in Older Men But Doesn't Enhance GHRP-2 Response
Testosterone supplementation in healthy older men increased basal GH and IGF-1 secretion but did NOT potentiate the GH response to GHRP-2/GHRH peptide stimulation — testosterone works through different GH pathways than secretagogues.
Quick Facts
What This Study Found
Testosterone supplementation increased GH and IGF-1 in healthy older men through enhanced basal secretion but did not potentiate GHRP-2 or GHRH stimulation responses — testosterone and GH secretagogues work through independent, non-synergistic GH-axis pathways.
Key Numbers
How They Did This
RCT study on ghrp, hormone-optimization.
Why This Research Matters
Relevant for ghrp, hormone-optimization.
The Bigger Picture
Advances peptide/biomarker research.
What This Study Doesn't Tell Us
See abstract.
Questions This Raises
- ?Further research needed.
- ?Clinical translation to evaluate.
Trust & Context
- Key Stat:
- Key finding Testosterone supplementation increased GH and IGF-1 in healthy older men through enhanced basal secretion but did not potentiate GHRP-2 or GHRH stimul
- Evidence Grade:
- strong evidence.
- Study Age:
- Published in 2005.
- Original Title:
- Testosterone supplementation in healthy older men drives GH and IGF-I secretion without potentiating peptidyl secretagogue efficacy.
- Published In:
- European journal of endocrinology, 153(4), 577-86 (2005)
- Authors:
- Veldhuis, Johannes D(14), Keenan, Daniel M(5), Mielke, Kristi(3), Miles, John M, Bowers, Cyril Y
- Database ID:
- RPEP-01097
Evidence Hierarchy
Frequently Asked Questions
What was studied?
Testosterone Boosts GH and IGF-1 in Older Men But Doesn't Enhance GHRP-2 Response
What was found?
Testosterone supplementation in healthy older men increased basal GH and IGF-1 secretion but did NOT potentiate the GH response to GHRP-2/GHRH peptide stimulation — testosterone works through different GH pathways than secretagogues.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-01097APA
Veldhuis, Johannes D; Keenan, Daniel M; Mielke, Kristi; Miles, John M; Bowers, Cyril Y. (2005). Testosterone supplementation in healthy older men drives GH and IGF-I secretion without potentiating peptidyl secretagogue efficacy.. European journal of endocrinology, 153(4), 577-86.
MLA
Veldhuis, Johannes D, et al. "Testosterone supplementation in healthy older men drives GH and IGF-I secretion without potentiating peptidyl secretagogue efficacy.." European journal of endocrinology, 2005.
RethinkPeptides
RethinkPeptides Research Database. "Testosterone supplementation in healthy older men drives GH ..." RPEP-01097. Retrieved from https://rethinkpeptides.com/research/veldhuis-2005-testosterone-supplementation-in-healthy
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.