According to the British "Daily Mail", 1/6 of the British couples cannot be conceived successfully each year, and about 35,000 women need to become mothers through fertilization in vitro.
After studying the evolutionary biologist at Tel Aviv University in Israel, after research, this believes that this has a lot to do with male sperm.It is not enough to explain the infertility rate of men's high hits.
He infer that some male infertility is that the number of sperm is too large and the vitality is too strong.These brave "elite soldiers" cross the line of defense to the eggs together, causing the phenomenon of "multi -essence into the egg", which seriously interfere with the normal fertilization process of the eggs.
Excessive sperm quantity is the main cause of infertility in many men.However, the latest research shows that men are "strong" and have too many sperm, and they can't be a father.
Professor Harson pointed out that during the long evolution, the reproductive system of men and women has been undergoing subtle changes.Women's reproductive system has strengthened its defense ability to sperm, and men's sperm is constantly practicing "internal skills" to penetrate the women's defense with stronger vitality.If the evolutionary pace of sexuality will be consistent, the power of fertilization will increase, otherwise there will be problems. Whether it is too much sperm or not enough, it will make women get pregnant.
(Editor in charge: A Qiu)
