Why is my libido lower and why am I experiencing ED after starting TRT?

While testosterone is the primary driver of male libido, estrogen (estradiol) plays a critical role in maintaining sexual function and desire. When testosterone levels rise on TRT, your body naturally converts some of it into estrogen; if this balance is disrupted—either by estrogen being too high or being suppressed too low by aromatase inhibitors—it can lead to ED and a loss of libido. At HeydayMD, our providers focus on optimizing this hormonal ratio rather than just chasing a testosterone number, ensuring your protocol supports both physical performance and sexual health.