A new study by researchers at the University of Oxford has found that regular ejaculation may significantly improve male reproductive health, offering fresh scientific insight into how sperm quality changes over time.
The findings, published in the respected journal Proceedings of the Royal Society B, challenge long-standing assumptions about abstinence and fertility, suggesting that more frequent ejaculation could actually lead to healthier sperm and better chances of conception.
Oxford scientists conducted a large-scale review, analyzing data from more than 100 human studies involving approximately 55,000 men, alongside additional research across animal species.
Their goal was to understand how sperm behaves when stored in the male reproductive system over time.
Men who ejaculated less frequently showed higher levels of sperm damage, while those who ejaculated more often produced sperm that was fresher and more viable.
The study highlights that sperm cells are particularly vulnerable compared to other cells in the body. Unlike most cells, sperm have limited ability to repair themselves once formed.
As a result, when sperm stays in storage for extended periods, it becomes increasingly exposed to oxidative stress—a process where harmful molecules damage cell structures.
Over time, this leads to DNA damage within sperm cells, reduced motility (ability to swim effectively) and lower overall fertility potential
Researchers describe this process as a natural form of cellular aging, meaning sperm essentially ‘degrades’ the longer it is not released.
According to the study, regular ejaculation helps the body cycle out older sperm and replace it with newer, healthier cells.
This process reduces the buildup of damaged sperm and improves overall semen quality.
Scientists noted that while the improvement is modest, it remains statistically meaningful, especially for men trying to conceive.
The findings suggest that ejaculation frequency plays a more important role in reproductive health than previously understood.
The research challenges traditional guidance that encourages men to abstain from ejaculation for several days before fertility tests or conception attempts.
While abstinence can increase sperm count, the Oxford study suggests it may also reduce sperm quality if the period is too long.
Instead, researchers argue that shorter abstinence periods or more regular ejaculation—could lead to better outcomes, particularly in assisted reproduction methods such as IVF.
Although the study focuses on fertility, its findings contribute to a wider understanding of male health.
However, experts stress that ejaculation alone does not determine overall health.
Factors such as diet and nutrition, physical activity, underlying medical conditions and lifestyle habits all play a significant role in reproductive and general health.
Despite the promising findings, researchers caution against viewing ejaculation as a cure-all solution.