Why Your Body Needs Testosterone to Build Muscle
Pharmacological hypogonadism impairs molecular transducers of exercise‐induced muscle growth in humans
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
This study shows that even with the same workouts, young men who couldn’t make testosterone didn’t gain muscle like those who could.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 574 / 90
Evidence Score
Participants are randomly assigned to treatment or control groups, minimizing bias. Considered the gold standard for testing whether an intervention causes an effect.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
This study shows that even with the same workouts, young men who couldn’t make testosterone didn’t gain muscle like those who could.
No biological mechanisms were identified in this study. This may be an epidemiological, observational, or survey-based study that reports associations rather than proposing causal biological pathways.
Systematic Reviews & Meta-Analyses
Max 100Randomized Controlled Trials
Max 90Cohort Studies
Max 72Case-Control Studies
Max 58Cross-Sectional Studies
Max 44Case Reports & Case Series
Max 30Expert Opinion & Narrative Reviews
Max 574 / 90
Evidence Score
Participants are randomly assigned to treatment or control groups, minimizing bias. Considered the gold standard for testing whether an intervention causes an effect.
Publication
Authors
Gharahdaghi N, Rudrappa S, Brook MS, Farrash W, Idris I, Aziz MHA, Kadi F, Papaioannou K, Phillips BE, Sian T, Herrod PJ, Wilkinson DJ, Szewczyk NJ, Smith K, Atherton PJ
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Claims (6)
Young guys need their natural testosterone to get the full muscle-building benefits from weightlifting — if their testosterone is blocked with drugs, their muscles don’t grow as much, even if they train just as hard.
Young men with low testosterone don't get the same muscle-building boost from weight training because their bodies don't increase the machinery needed to make new proteins — and that seems to be because they're missing testosterone.
If young guys are given a drug that lowers their testosterone, they don’t build much muscle from weight training—while others with normal testosterone gain about 1.5 kg of muscle in 6 weeks. This shows testosterone is key for getting the most out of lifting weights.
When young men have low testosterone on purpose for the study, their muscles don’t respond as well to weight training at the cellular level — testosterone seems to help muscles fully 'feel' and react to the workout.
Young men need normal testosterone levels to get the full muscle-building benefits from weight training — low testosterone blunts the body’s muscle-growth signals.