Fertility basics
Paternal age has a real but more gradual effect than maternal age. From around the mid-forties, average semen parameters decline slightly, sperm DNA fragmentation tends to rise, and there is a small increase in the risk of certain new genetic changes and of miscarriage. These are modest population-level shifts, and most older men father healthy children.
Also known as: father's age, male age and fertility
Related Australia guides
Sources
- Healthy Male (healthymale.org.au)
Last reviewed: 10 September 2026. Written by the Antega Editorial Team. General information only — always follow the advice of your own clinic, doctor or pharmacist.