The man has a biological clock too
British researcher discover man have biological clock too, fecundity of them too can drop with growth of age while being the same as woman. The researchers of the university find that of Shandong in Bristol and cloth, only 8% of probability that the man made his sex partner not become pregnant in one year 25 years old ago, but reach in 35 years old, on rising to 15%. Chris Dr. Ford says: "This is first research about the fact that male fecundity drops with age. " He says, though people have been suspecting all the time the man's fecundity will drop with growth of age, but this assumption has not been verified all the time. The intersection of Ford and Dr. and their the intersection of colleague and 8500 Mr. and Mrs. of Britain correctly, carry on research on impact on man of age. Discover, man and woman all have biological clocks to a certain extent, after entering 30 years old, the biological clock begins to work. Study yet to find, in infertile married couple's diagnosis correctly, the man's age is a factor too. Though does not know now why the man's age influences fecundity, it is important but there are three factors at least. Generally speaking, married couple will be reduced in the sexual activity in one year after marriage. With the years, the number of times of the married couple activity will drop too, the probability of becoming pregnant is just small. Age will also influence the quality of the sperm, environmental factors and diseases will all cause serious influence on the sperm. These factors have determined the man above the average age for marriage does the time father spent should be longer.
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