Although men have a longer reproductive lifespan than women, there is still an optimal age range from a eugenic perspective.
Taking sperm quality as an example, although the sperm of older men does not age and has a higher density, its motility has shown a clear decline. The number of immobile and deformed sperm has increased by 20%, and the metabolism of sperm has also slowed down. This leads to the production of a considerable amount of waste, which can have adverse effects on offspring.
In addition, after the age of 35, the secretion of male hormones in men begins to decline, with an average decrease of 1% per year.
Therefore, just like women, men also have a reproductive biological clock, but men's reproductive clock is more flexible.
According to the biological clock of men's reproduction, when is the best time for men to become fathers? Surveys have found that children born to fathers in the age range of 30-35 years old achieve the highest scores in intelligence tests.
Therefore, the conclusion is that men aged 30-35 have the most powerful sperm and are most suitable for reproduction.