Sexual Health > Libido and Hormones

What Can Cause Low Testosterone Levels?

A number of physical issues and lifestyle choices can cause low-T—more than you might realize.
older man in striped pajamas looks worried and sits on bed with yellow blanket

Related Articles

Here's what you need to know about the advertisements you've seen for low-T solutions.
Yes, the sex hormone is produced in the testes, but not only there. See what else is a mystery.
Gels, injections, pellets, patches: Doctors weigh in on the best treatments for hypogonadism.
Hormones may impact your entire body, including your sleep schedule.