Research

Mixed

Transdermal TRT has a minimal or inconsistent effect on reducing fat mass (FM) in men with spinal cord injury, unlike its consistent effect on increasing lean body mass.

While testosterone therapy will likely help you build muscle, don't expect it to automatically melt away fat if you have a spinal cord injury. Your reduced mobility and lower energy expenditure make fat loss harder to achieve through hormones alone. You may need to focus more on dietary adjustments and any possible physical activity to see changes in fat mass, even as your muscle mass improves.

ModerateQualifiesMEDIUM confidence
In individuals with SCI, TRT treatment had no beneficial impact on FM (0.3 kg). However, relative to the control group, participants on average gained 1.2 kg less FM over the course of 12 months.
Tom E. Nightingale et al. · Journal of Spinal Cord Medicine · 2017

Why this rating

Based on pooled data from able-bodied men showing FM reduction, but one small SCI trial showing no significant FM change.

Source

Body composition changes with testosterone replacement therapy following spinal cord injury and aging: A mini review

Tom E. Nightingale et al. · Journal of Spinal Cord Medicine · 2017

DOI 10.1080/10790268.2017.1357917

narrative_reviewCited 34×
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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