Why Do Anabolic Steroids Cause Infertility?

Anabolic steroids harm male fertility the same way that testosterone does: by interfering with the hormone signals that are needed to produce sperm. Just how much damage is done depends on the drugs, dose and how long a man takes them.

Why does taking testosterone make you infertile?

How does testosterone treatment cause infertility? One side effect of testosterone treatment is infertility. Testosterone treatment decreases sperm production by decreasing levels of another hormone, follicelstimulating hormone (FSH), which is important for stimulating sperm production.

Can anabolic steroids boost fertility?

The use of testosterone or anabolic steroids to gain muscles mass, and thus appear more fertile, while actually increasing one's likelihood of infertility, is now known as the Mossman-Pacey paradox, named after the two researchers who first described it, as the BBC and other outlets recently reported.