The Claim
In young, weight-trained males, two weeks of daily heavy strength training is associated with transient reductions in morning testosterone and insulin-like growth factor 1 (IGF-1) levels, with concentrations returning to baseline within four days after training cessation, suggesting acute hormonal suppression without long-term disruption.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
If young guys who lift weights do intense training every day for two weeks, their morning hormone levels might dip for a bit—but they bounce back within four days after stopping, so it’s just a short-term blip, not a long-term problem.
See the scientific wording
In young, weight-trained males, 2 weeks of daily heavy strength training is associated with transient reductions in morning testosterone and IGF-1 levels, with concentrations returning to baseline within 4 days after training cessation, suggesting acute hormonal suppression without long-term disruption.
What the research says
1 studyThe study shows that intense daily weight training for two weeks lowers testosterone and IGF-1 temporarily, but levels go back to normal within a few days after stopping, just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.