Prolactin is a hormone that affects many different hormones in the body. Present in both men and women, it rarely causes problems, but those who are serious about their health should understand what it is and how it impacts the body’s overall health and well-being.

What does prolactin do in males?

In men, high prolactin levels can cause galactorrhea, impotence (inability to have an erection during sex), reduced desire for sex, and infertility. A man with untreated hyperprolactinemia may make less sperm or no sperm at all.

When do men produce prolactin?

Prolactin is also known to be secreted more during sleep; with peaks generally appearing between 4am and 7am.