There are many different treatments that men who have prostate cancer may undergo. Some of which can lead to ED.
Observing
Active surveillance follows the patient by utilizing frequent lab tests and biopsies to monitor their cancer.
Surgical
Radical prostatectomy is a procedure that removes the entire prostate. Candidates for this treatment must be healthy enough to undergo major surgery. Having a radical prostatectomy can damage the nerves responsible for your erectile function.
Radiation
Sometimes done in combination with hormone therapy, radiation works by attacking the cells in the prostate in the hopes of eliminating cancer. Radiation can sometimes cause sexual side effects such as ED and ejaculation issues.
Hormone therapy
The hormone therapy used to treat prostate cancer centers around stopping or reducing testosterone production. Testosterone is thought to make the tumor grow and reducing levels helps to starve out the prostate cancer. Testosterone is responsible for sex drive and is needed to obtain and maintain an erection. Some providers allow the use of testosterone products while being treated for prostate cancer but it must be strictly supervised.