It applies to men and women and increasing your chances of losing the genetic lottery. Not that it's a guarantee but biologically a human being is in his and her prime to procreate around 21. It's all downhill from there and the deeper you get in those 30s?

spooky.
But hey fukk facts. Red pill.
Age Raises Infertility Risk in Men, Too
We know that once women reach their mid-30s, their risk of having a child with a genetic abnormalities increases sharply. Now we know that the age of fathers can also contribute to that risk. In the most revealing study on this topic to date, Fisch and his colleagues evaluated more than 3,400 cases of
Down syndrome. They found the father's age played a significant role when both parents were over 35 at the time of
conception. The effect was most pronounced when the woman was over 40. In those cases, says Fisch, "We found the incidence of Down syndrome is related to sperm approximately 50% of the time." These findings appeared in the June 2003 issue of
The Journal of Urology.
Children born to older men also run a higher risk of developing
schizophrenia, a devastating mental disorder. In one study on the subject, researchers discovered that men between the ages of 45 to 49 were twice as likely to have children with
schizophrenia as were men 25 and younger. That risk tripled for men over the age of 50. Investigators, reporting in a 2001 issue of the
Archives of General Psychiatry, drew their results from a sample of more than 85,000 people.