At what age does a man stop producing sperm?

Do Men Ever Stop Producing Sperm?

Unlike women, who are born with all the eggs they’ll ever have, men produce sperm continuously throughout their lives. There’s no biological “expiration date” when sperm production simply stops. This means that, in theory, a man can father children well into his later years—sometimes even into his 80s or beyond.

However, age does play a role. As men get older, testosterone levels gradually decline, often starting around age 30 and decreasing slowly over time. This can lead to lower libido, reduced energy, and sometimes difficulty achieving or maintaining an erection. Sperm quality may also diminish with age—count, motility, and morphology can all be affected—but production itself doesn’t cease.

It’s a common myth that men remain as fertile in their 70s as they were in their 20s. While it’s possible to father a child later in life, the chances decrease, and there may be increased risks for the child, such as a higher likelihood of certain genetic conditions. Still, the ability to produce sperm persists, making male fertility a lifelong possibility.

That said, lifestyle plays a big role. A healthy diet, regular exercise, avoiding smoking, and managing stress can all help support sperm health as men age. While the body naturally changes, these habits can make a noticeable difference in both fertility and overall well-being.

So, while the biological clock ticks differently for men, it doesn’t stop. The capacity to produce sperm lasts a lifetime—but with age comes the need for greater awareness and care.