Testosterone
Testosterone and Erectile Dysfunction: How Are They Connected?
Low testosterone can contribute to erectile dysfunction, but it is rarely the only factor. Here's how the two are assessed together.
Dr. Alejandro Molina
Consultant Urologist & Andrologist
15+ years in Urology · FEBU · Penile Girth Enhancement since 2018
Testosterone's role in erectile function
Testosterone contributes to libido and supports several aspects of the erectile process, but an erection itself depends primarily on vascular and neurological mechanisms — healthy blood flow and nerve signalling. Testosterone is a contributor, not the sole mechanism.
Why treating testosterone alone doesn't always resolve ED
When vascular, neurological or psychosexual factors are the primary driver of erectile dysfunction, testosterone treatment on its own is unlikely to fully resolve it. This is the practical reason the two are assessed together rather than assuming a low reading explains the whole picture.
When testosterone assessment is part of an ED work-up
Hormonal assessment is a standard part of a full erectile dysfunction evaluation, used to identify whether testosterone is a relevant contributor — not a routine justification for automatically prescribing it.
Two conditions, one assessment
Because erectile function, hormonal health and psychosexual context can all be relevant to the same presentation, both are considered within the same assessment rather than treated as entirely separate problems.
This article is informational and does not replace an individual medical assessment. See our medical disclaimer.