In response to the issue of men's fertility, the Marx Planck Research Center in Munich did an interesting experiment.They chose 20 grandfather 60 to 89 and 20 to 20 to 33 -year -old father.
Put the sperm and mouse eggs of these two groups of men together. After adding some enzymes, they found that the binding rate of the two groups reached 54%, which shows that the sperm of the elderly is not aging.
Then further analyzed the semen of the two groups of men, and found that the average sperm density of the grandfather group had an average of 10 or 200 million sperm insects per milliliter, but the father group was only 0 and 7.8 billion.The research made by Professor Xueling in Hamburg also has the same results.He also found that although the density of sperm in semen in the elderly is high, the mobility has weakened significantly. In addition, the concentration of fruit esters required for metabolism of sperm also decreases, and the amount of waste after metabolic increases.
How to determine the "degree of youth" in a clinical clinical? At the men's physiological aging symposium held in Berlin, it depends on the hardness of the testicles, the frequency of intercourse, and the physical condition of the whole body (such as hypertension, diabetes, heart disease or asthma.Wait), if necessary, take the blood to test the male hormone concentration as a replenishment.
Judging from the curve drawn by thousands of clinical observations, 31 years old should be the peak of "youth".
Another questionnaire investigation found that the sexual living conditions of the elderly have a close relationship with marriage.Only 7%of the 101 elderly people have sex.Fifteen old people with partners have 54%of sexual behavior of about L to 3 times a week.After 75 years of age, it slowly decreased.
The key here is: men's sexual interests are "more and more beneficial". People who are active in sex when they are young can maintain their sexual life.
(Responsible editor: internship drunk pen)
