Hormones
Testosterone is produced mainly in the testes and is essential for sperm production, along with FSH. In men, low testosterone with low LH and FSH may point to a pituitary or hypothalamic cause. Importantly, taking testosterone as a supplement, injection or gel suppresses the body's own sperm production and can cause a very low or zero sperm count. In women, raised testosterone and other androgens are often part of the PCOS picture.
Also known as: testosterone therapy, male hormone
Related South Africa guides
Sources
- ESHRE/ICMART glossary of assisted reproductive terminology
- ASRM patient information
Last reviewed: 8 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.