Men typically never stop producing sperm but that doesn’t mean they don’t have a ‘biological clock’ like women. As a man ages, his sperm undergoes genetic mutations which increases the likelihood that the DNA of his sperm may be damaged. This can influence fertility and also create potential impacts on the health of his future children.
Studies have shown that fathers of an ‘advanced paternal age’ may be more likely to have children with neurodevelopmental disorders. A study done in 2010 observed the offspring of men over 40 had a five-fold risk of developing Autism Spectrum Disorder compared to the general population.
Age and male fertility
Men often think that their age doesn’t matter when it comes to having a child and the biological clock is important only for the child-bearing mother. However, the number and quality of the sperm declines with your age. From a biological standpoint, experts recommend a man is best suited to fatherhood from his late 20s to early 30s.
It is still possible for men to father a child in their 50s and older. According to Guinness World Records, the oldest man to father a child was 92 years old at the time of the birth.
Still, researchers have found that a man’s age can affect a couple’s chances of becoming pregnant. Males over 40 years of age have a lower likelihood of success.