Is there a limit to men's fertility?

Is there an age limit for men's fertility? Regarding this question, many examples, scholars' research experiments, and analytical statistics have strongly shown that there is no age limit for men's fertility. However, just like older women, the children they give birth to have higher rates of dementia and deformities.

Since ancient times, it has been known that women no longer ovulate and lose their fertility after menopause. According to medical statistics, children born after the age of 35 are more likely to suffer from Mongolian dementia or deformities, so women should try to avoid giving birth.

So, what about men? Is there an age limit for men's fertility? Regarding this issue, many examples, scholars' research experiments, and analytical statistics have strongly shown that there is no age limit for men's fertility. However, just like older women, there is also a higher rate of dementia and deformities in the children they give birth to.

There was an old man and a young woman. Two years after their marriage, the wife gave birth to a Mongolian idiot. The old man thought that he was over 70 years old and no longer had the ability to have children, so he suspected that his wife was unfaithful to him. They often had conflicts and many unpleasant things happened, which made the whole family restless. Regarding the fact that the old man can still have children, when I talked about the issue of "retirement of testicles" in the ATV program "Life is Colorful", I mentioned that there was a 120-year-old man in the UK who could still make the woman pregnant. This is a good example. Therefore, the old man did not need to doubt his wife.

An interesting experiment was conducted to investigate the age of male fertility. They selected 20 grandfathers aged 60-89 and 20 fathers aged 24-33 for comparison. The sperm of the two groups of men were placed together with vole eggs, and after adding some enzymes, they found that the binding rate of both groups reached 54%, which shows that the sperm of the elderly does not age. Then the semen of the two groups of men was further analyzed.

The results showed that the average sperm density of the grandfather group was 120 million sperm per milliliter, while that of the parents group was only 78 million. He also found that although the sperm density in the semen of the elderly was high, the motility was significantly reduced. The number of immobile sperm and deformed sperm increased by 20%. In addition, the concentration of fruit esters required for sperm metabolism also decreased, and the waste products after metabolism increased.

How to clinically determine a man's "youth level"? A symposium on men's physiological aging held in Berlin pointed out that it depends on the hardness of the testicles, the frequency of sexual intercourse, and the overall physical condition (such as high blood pressure, diabetes, heart disease or asthma, etc.). If necessary, blood tests can be taken to measure the concentration of male hormones as supplementary evidence. According to the curve drawn from thousands of clinical observations, 31 years old should be the peak of men's "youth level".

According to a questionnaire survey conducted by Munich psychiatrist Kockert on 250 men aged 60 to 70, the sexual life of the elderly is closely related to marriage. Only 7% of the 101 single elderly people have sex. 54% of the 149 elderly people with partners still have sex 1 to 3 times a week. The number of sexual activities gradually decreases at the age of 75. The key point here is that men's sexual interest "becomes more and more refined". People who are sexually active when they are young are more likely to maintain their sex life in old age.

To sum up, there is no age limit for men's fertility. However, as men get older, the quality of their semen deteriorates. The quality of sperm is related to the quality of the embryo. Embryos formed by poor sperm and eggs often cause early miscarriage and also affect the quality of the next generation.