Erectile function and testosterone are related but distinct aspects of male sexual physiology. Testosterone is the primary hormonal driver of sexual desire (libido), nocturnal erections, and general sexual energy.
Achieving and maintaining an erection during intercourse depends primarily on vascular blood flow, nitric oxide release, and healthy endothelial and neurological function in the penile tissue.
While severe androgen deficiency can impair penile tissue integrity and reduce responsiveness, treating low testosterone alone often does not fully resolve erectile dysfunction if vascular disease, hypertension, diabetes, or performance anxiety are present.
Risks and limitations
- Testosterone therapy alone is rarely a complete solution for moderate to severe vascular erectile dysfunction.
- A comprehensive evaluation should examine both hormonal levels and cardiovascular/vascular health to determine the appropriate combination of therapies.