Research into testosterone replacement therapy (TRT) has grown significantly in recent years, with large-scale studies helping to clarify its benefits and risks.

A notable 2019 review involving more than 44,000 men with low testosterone levels found that TRT can play a meaningful role in regulating the male sexual response cycle.

The findings showed improvements in several key areas, including libido, erection quality, and overall sexual satisfaction. In addition, TRT was associated with a reduction in symptoms of erectile dysfunction, making it a potentially valuable treatment option for men experiencing hormone-related sexual health issues.

While results are generally positive for appropriately selected patients, researchers continue to emphasise the importance of medical supervision and individual assessment before starting therapy. Ongoing studies aim to better understand long-term effects and optimise treatment protocols.