The Claim
The acute post-exercise increase in circulating interleukin-6 (IL-6) is associated with muscle hypertrophy following resistance training in young men, but this association does not independently explain additional variance in hypertrophy when intramuscular factors (AR, p70S6K) are accounted for, suggesting IL-6 may be a marker rather than a direct mediator.
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.
After a tough workout, your body releases a chemical called IL-6, and people who gain more muscle tend to have more of it—but it’s probably just a side effect, not the reason your muscles grow.
See the scientific wording
The acute post-exercise increase in circulating interleukin-6 (IL-6) is associated with muscle hypertrophy following resistance training in young men, but this association does not independently explain additional variance in hypertrophy when intramuscular factors (AR, p70S6K) are accounted for, suggesting IL-6 may be a marker rather than a direct mediator.
What the research says
1 studyStudy: Muscular and Systemic Correlates of Resistance Training-Induced Muscle Hypertrophy
The study found that after workouts, a protein called IL-6 goes up in the blood, and people who gained more muscle had bigger spikes in IL-6—but other inside-the-muscle signals were even more connected to muscle growth, so IL-6 might just be a side effect, not the cause.
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.